applyiing tpv seals to improve sunroof sealing performance
温室里长不出参天大树,鸟笼里飞不出的英语作文
温室里长不出参天大树,鸟笼里飞不出的英语作文In the greenhouse, the towering trees cannot grow, and the birds in the cage cannot fly out. This situation reflects the limitations of the environment and the constraints placed on living things.The greenhouse, while protecting plants from external threats such as pests and extreme weather, also restricts their growth by confining them to a controlled space. The lack of space and natural resources can hinder the plants' ability to reach their full potential. Similarly, the bird cage confines the birds' freedom by restricting their movement and preventing them from experiencing the natural environment.This concept can be extended to human life as well. Just as plants and birds are confined by their environments, people can also face limitations and constraints in various aspects of their lives. These limitations can be physical, such as disabilities or health conditions, or they can be environmental, such as living in a poverty-stricken area or having limited access to education and resources. Additionally, societal constraints and expectations can also restrict individuals from fully expressing themselves and reaching their potential.However, it is important to recognize that while the greenhouse and the bird cage represent constraints, they also provide protection and care. In the same way, societal structures and support systems can offer security andstability to individuals. The key is to find a balance between protection and freedom, allowing for growth and development while ensuring safety and support.Ultimately, the metaphor of the greenhouse and bird cage serves as a reminder of the importance of creating environments that foster growth and allow individuals to flourish. It is crucial to recognize and address the limitations and constraints that exist, and to work towards creating spaces where everyone has the opportunity to thrive. Only then can we break free from the confines of the greenhouse and the bird cage, and reach new heights of potential and possibility.。
我希望改变拖延英语作文
我希望改变拖延英语作文English:To overcome procrastination in writing English essays, I believe it is important to set specific goals and deadlines for each step of the writing process. Breaking the essay down into smaller, more manageable tasks can make the overall project seem less daunting and help prevent the urge to procrastinate. It's also helpful to establish a routine for writing, whether it's dedicating a set amount of time each day to work on the essay or finding a time of day when you feel most focused and productive. Additionally, creating a designated workspace for writing can help minimize distractions and keep you on track. Another strategy to combat procrastination is to hold yourself accountable by sharing your progress with a friend or mentor, or even joining a writing group where you can receive feedback and support. Lastly, it's important to recognize the reasons behind your procrastination and address any underlying issues that may be holding you back from diving into the writing process.中文翻译:为了克服拖延写英语作文的问题，我认为设定具体的目标和截止日期对写作过程的每个步骤都至关重要。
海平面上升的应对措施英语作文
海平面上升的应对措施英语作文The world is facing a significant environmental challenge in the form of rising sea levels. As global temperatures continue to increase due to human-induced climate change, the melting of glaciers and ice sheets, as well as the thermal expansion of ocean water, are causing sea levels to rise at an alarming rate. This phenomenon poses a serious threat to coastal communities, islands, and low-lying regions around the globe, and it is crucial that we take immediate and effective action to address this issue.One of the primary measures that can be taken to address rising sea levels is the implementation of coastal protection and adaptation strategies. This can involve the construction of seawalls, breakwaters, and other physical barriers to protect against the encroachment of the sea. Additionally, the restoration and enhancement of natural coastal ecosystems, such as mangroves, wetlands, and coral reefs, can help to dissipate wave energy and provide a natural defense against rising waters.Another important measure is the relocation of vulnerablecommunities to higher ground. This may involve the development of new housing and infrastructure in less vulnerable areas, as well as the provision of support and assistance to those who are forced to relocate. This can be a challenging and costly process, but it is essential for ensuring the long-term safety and resilience of coastal populations.In addition to physical and infrastructural measures, there is also a need for policy and regulatory changes to address the underlying causes of sea level rise. This includes the implementation of policies and regulations to reduce greenhouse gas emissions and promote the transition to renewable energy sources. This can involve the implementation of carbon pricing mechanisms, the phasing out of fossil fuels, and the promotion of energy efficiency and conservation measures.Another important measure is the investment in research and development to improve our understanding of the science and impacts of sea level rise. This can involve the development of more accurate models and projections of future sea level changes, as well as the exploration of new technologies and strategies for adaptation and mitigation.One such technology that holds promise is the use of geoengineering techniques to actively remove carbon dioxide fromthe atmosphere or to reflect solar radiation back into space. While these technologies are still in the early stages of development and face significant technical and ethical challenges, they may ultimately play a role in addressing the root causes of sea level rise.Another important measure is the implementation of early warning and disaster response systems to help communities prepare for and respond to the impacts of sea level rise. This can involve the development of early warning systems to alert communities of impending flooding or storm events, as well as the provision of resources and support for disaster response and recovery efforts.In addition to these technical and policy-based measures, there is also a need for greater public awareness and engagement on the issue of sea level rise. This can involve the development of educational programs and public outreach campaigns to help people understand the causes and impacts of sea level rise, as well as the steps that can be taken to address it.Overall, addressing the challenge of rising sea levels will require a multi-faceted and coordinated approach that involves a combination of physical, policy, and educational measures. By taking immediate and decisive action, we can work to mitigate the impacts of sea level rise and protect vulnerable communities around the world.。
解决全球变暖问题英语作文高中
解决全球变暖问题英语作文高中Global Warming: A Call for Immediate ActionGlobal warming, also known as climate change, has emerged as a grave concern in recent decades, with overwhelming scientific evidence pointing to human activities as the primary cause. This issue demands urgent attention as it poses significant threats to the environment, ecosystems, and human well-being. To effectively address global warming, a comprehensive strategy must be implemented, encompassing efforts to reduce greenhouse gas emissions, adapt to changing climates, and promote sustainable practices.One of the major contributors to global warming is the excessive burning of fossil fuels, such as coal, oil, and natural gas. These activities release large quantities of carbon dioxide (CO2) and other greenhouse gases into the atmosphere, trapping heat and leading to a rise in globaltemperatures. To combat this, transitioning to clean and renewable energy sources is imperative. Governments, industries, and individuals must heavily invest in renewable technologies, such as solar and wind power, to decrease reliance on fossil fuels. Additionally, implementing stricter regulations and promoting energy efficiency can significantly reduce emissions.Deforestation is another significant factor contributing to global warming. Trees absorb CO2 and act as carbon sinks, helping to mitigate the impact of greenhouse gases. However, rampant deforestation, particularly in tropical rainforests, not only reduces the Earth's capacity to absorb CO2 but also releases large amounts of stored carbon into the atmosphere. To address this issue, efforts must be made to halt deforestation and promote reforestation initiatives. Governments should enforce sustainable land-use policies, while individuals can contribute by supporting organizations that focus on forest conservation.In addition to reducing emissions, it is crucial to adapt to the changing climate to minimize the impact of global warming. Rising sea levels, extreme weather events, andshifts in rainfall patterns are just a few of the consequences associated with climate change. Governments should invest in infrastructure improvements, such as coastal defenses and flood management systems, to protect vulnerable regions. Furthermore, implementing climate-resilient agricultural practices and promoting water conservation can help communities adapt to changing conditions and securetheir food and water supply.Promoting sustainable practices across various sectors is vital in combating global warming. Industries must adopt eco-friendly manufacturing processes and minimize waste generation. Encouraging the use of public transportation, cycling, and walking can significantly reduce emissions from the transportation sector. Educating individuals about the importance of sustainable consumption, recycling, andreducing waste can also contribute to mitigating global warming. Furthermore, incentivizing sustainable practices through government policies and economic measures can encourage both industries and individuals to make environmentally conscious choices.Addressing global warming requires international cooperation and collective action. Governments must collaborate at the global level to establish binding agreements and frameworks that aim to reduce emissions and support developing nations in transitioning to green economies. Sharing technologies and knowledge can facilitate the implementation of sustainable practices worldwide. Moreover, raising awareness through education and media campaigns can mobilize public support and encourage individuals to adopt environmentally friendly lifestyles.In conclusion, global warming necessitates immediate action to mitigate its impacts. By reducing greenhouse gasemissions, promoting renewable energy sources, combating deforestation, adapting to changing climates, and embracing sustainable practices, we can work towards a sustainable and climate-resilient future. Addressing global warming requiresa collective effort from governments, industries, communities, and individuals worldwide. Time is of the essence, andtogether we can make a difference in safeguarding our planet for future generations.。
如何让环境更优化英语作文
如何让环境更优化英语作文英文回答：Improving the Environment。
As a conscientious citizen, I am deeply concerned about the state of our environment. The detrimental effects of pollution, deforestation, and climate change are becoming increasingly apparent, posing a significant threat to the health of our planet and the well-being of future generations. It is imperative that we take immediate action to mitigate these detrimental impacts and strive to create a more sustainable and eco-friendly society.One of the most pressing environmental issues we face is pollution. Air pollution, caused by the release of harmful gases and particles into the atmosphere, has severe consequences for human health and the environment. It can lead to respiratory illnesses, cardiovascular disease, and other health problems. Water pollution, resulting from thecontamination of water sources by industrial waste, agricultural runoff, and sewage, poses threats to aquaticlife and human health. To address this challenge, it is essential to implement stricter regulations on industrial emissions, promote the use of cleaner energy sources, and invest in renewable energy technologies.Deforestation, the clearing of forests for agriculture, development, and other purposes, is another major environmental concern. Forests play a vital role in regulating the Earth's climate, providing habitat for wildlife, and protecting watersheds. Deforestation contributes to climate change by reducing the planet's capacity to absorb carbon dioxide, a greenhouse gas that traps heat in the atmosphere. It also leads to soil erosion, biodiversity loss, and desertification. To combat deforestation, we must support sustainable forestry practices, promote reforestation efforts, and reduce our consumption of products that contribute to deforestation, such as paper and wood.Climate change, caused by the release of greenhousegases into the atmosphere, is one of the most pressing environmental challenges of our time. The effects of climate change are far-reaching, including rising sea levels, intensifying storms, and more frequent and severe droughts. These impacts can displace communities, damage infrastructure, and threaten food security. To mitigate climate change, we must transition to a low-carbon economy, invest in clean energy technologies, and promote energy efficiency. Additionally, it is crucial to adapt to the impacts of climate change by developing resilient infrastructure and implementing disaster preparedness measures.As individuals, we can play a significant role in improving the environment. By making conscious choices, such as reducing our carbon footprint, conserving water, and recycling, we can contribute to a more sustainable future. We can also support businesses and organizations that prioritize environmental responsibility and advocate for policies that protect our planet.By working together, we can create a better future forourselves and for generations to come. By implementing sustainable practices, investing in clean energy technologies, and advocating for policies that protect the environment, we can safeguard the health of our planet and ensure a more sustainable future for all.中文回答：如何让环境更优化。
压力帮助改善英文作文高中
压力帮助改善英文作文高中Pressure is often seen as a negative thing, but in reality, it can actually help improve our performance in various aspects of life. When we are under pressure, it pushes us to work harder and smarter, leading to better results.The pressure to succeed can motivate us to set higher goals and push ourselves beyond our comfort zones. It challenges us to think creatively and find innovative solutions to problems, ultimately leading to personal growth and development.Furthermore, pressure can help us develop resilience and the ability to handle stressful situations. It teaches us how to stay calm under pressure, make quick decisions, and adapt to changing circumstances, which are essential skills for success in the real world.In addition, pressure can also foster a sense ofurgency and determination. It forces us to prioritize our tasks and manage our time effectively, leading to increased productivity and efficiency in our work.Moreover, the pressure to perform can drive us to seek help and support from others. It encourages collaboration and teamwork, as we realize that we cannot always do everything on our own, and that it's okay to ask for assistance when needed.Overall, while pressure may seem daunting at times, it ultimately helps us to become more resilient, driven, and capable individuals. It challenges us to strive for excellence and pushes us to reach our full potential.。
开封高中怎么补英语作文
开封高中怎么补英语作文当涉及到仿写他人作品时，我们必须注意尊重原创作者的劳动成果。
因此，我将以另一个角度为您提供一篇英语作文，内容包括如何提高英语写作能力以及一些实用的技巧和建议。
希望这对您有所帮助。
---。
Title: Improving English Writing Skills。
In today's globalized world, English has become an essential skill for communication, education, and career advancement. Among the various aspects of English proficiency, writing skills hold particular importance. Whether you're a student preparing for exams or a professional crafting emails or reports, honing your English writing ability is crucial. Here are some effective strategies to enhance your English writing skills:1. Read Widely: Reading is the foundation of goodwriting. Expose yourself to a diverse range of materials, including books, newspapers, articles, and essays. Pay attention to the writing styles, vocabulary usage, and sentence structures employed by different authors. This exposure will enrich your own writing and help you develop a keen sense of language.2. Practice Regularly: Like any other skill, writing improves with practice. Set aside time each day for writing exercises. Start with simple prompts or journal entries and gradually work your way up to more complex compositions. Consistency is key, so make writing a part of your daily routine.3. Seek Feedback: Don't hesitate to seek feedback on your writing. Share your work with teachers, peers, or online writing communities. Constructive criticism will help you identify areas for improvement and refine your writing style. Be open to suggestions and willing to revise your work accordingly.4. Study Grammar and Vocabulary: A solid grasp ofgrammar and vocabulary is essential for effective writing. Review the rules of grammar and punctuation, and expandyour vocabulary by learning new words and phrases regularly. Use online resources, grammar books, and vocabulary-building apps to enhance your language skills.5. Analyze and Emulate: Study well-written essays and articles to understand what makes them effective. Analyzethe structure, organization, and persuasive techniques used by the authors. Try to emulate these strategies in your own writing while maintaining your unique voice and perspective.6. Experiment with Different Styles: Explore different styles of writing, such as narrative, descriptive, persuasive, and expository. Experimenting with diverse writing styles will broaden your skill set and enable youto adapt your writing to various purposes and audiences.7. Edit and Revise: Good writing is often the result of multiple drafts and revisions. Take the time to edit your work carefully, focusing on clarity, coherence, and precision. Pay attention to grammar, spelling, andpunctuation errors, and make revisions to improve the overall quality of your writing.8. Use Writing Prompts: Writing prompts are great tools for sparking creativity and overcoming writer's block. Use prompts to inspire new ideas and challenge yourself to explore different topics and perspectives. Websites, books, and writing apps offer a wide range of prompts for writers of all levels.9. Embrace Feedback: Don't be afraid to receive feedback on your writing. Seek out constructive criticism from teachers, peers, or writing mentors. Use feedback as an opportunity for growth and improvement, and be willing to revise your work based on suggestions.10. Stay Motivated: Lastly, stay motivated and committed to your writing goals. Celebrate your progress, no matter how small, and stay focused on your long-term objectives. Remember that improving your writing skills is a journey that requires dedication and perseverance.In conclusion, enhancing your English writing skills requires time, effort, and dedication. By incorporating these strategies into your writing routine, you can develop confidence, clarity, and creativity in your writing. Remember to read widely, practice regularly, seek feedback, and stay motivated on your journey to becoming a proficient English writer.---。
改善气候的小发明作文
改善气候的小发明作文英文回答：As a young inventor, I have always been passionate about finding ways to improve our environment and combat climate change. One of my small inventions that I believe can make a big impact is a solar-powered portable air conditioner.This portable air conditioner is designed to be lightweight and easy to carry, making it perfect for use in outdoor activities such as camping, hiking, or outdoor events. It harnesses the power of the sun to cool down the air, reducing the need for traditional, energy-consumingair conditioning units. This not only helps to reduce carbon emissions, but also provides a sustainable and eco-friendly cooling solution.In addition to its environmental benefits, this portable air conditioner also has practical advantages. Forexample, it can provide relief from the heat during outdoor activities, making them more enjoyable and comfortable. It can also be used in areas where traditional air conditioning units are not available or practical, such as in remote locations or during power outages.Furthermore, this invention has the potential tobenefit communities in developing countries where access to electricity and traditional cooling systems is limited. By harnessing the power of the sun, this portable air conditioner can provide a sustainable and affordable cooling solution for people in these areas, improving their quality of life.Overall, I believe that this small invention has the potential to make a big impact in the fight against climate change. By providing a sustainable and eco-friendly cooling solution, it can help to reduce carbon emissions and improve the lives of people around the world.中文回答：作为一名年轻的发明家，我一直热衷于寻找方法来改善我们的环境并对抗气候变化。
改善天气英文作文
改善天气英文作文Title: Enhancing Weather Conditions: A Path to aBrighter Future。
Weather plays a pivotal role in shaping our daily lives, influencing everything from agricultural productivity to transportation efficiency. However, the unpredictabilityand severity of weather patterns in recent years have posed significant challenges to societies worldwide. In this essay, we will explore various strategies to improveweather conditions and mitigate the adverse effects of extreme weather events.First and foremost, investing in advancedmeteorological technologies is essential for accurately forecasting weather patterns. High-resolution satellite imagery, sophisticated weather models, and improved data collection methods can enhance our understanding of atmospheric dynamics, enabling more precise predictions of storms, heatwaves, and other extreme weather phenomena. Byleveraging cutting-edge technologies, meteorologists can provide timely warnings to communities at risk, allowing them to take proactive measures to mitigate potential damage.Furthermore, promoting sustainable practices to combat climate change is crucial for stabilizing weather patterns in the long term. The burning of fossil fuels and deforestation contribute to the accumulation of greenhouse gases in the atmosphere, leading to global warming and disruptions in weather systems. Transitioning to renewable energy sources such as solar, wind, and hydroelectric power can help reduce carbon emissions and limit the frequency and intensity of extreme weather events. Additionally, reforestation efforts and sustainable land management practices can enhance natural carbon sinks, mitigating the impacts of climate change on weather patterns.In addition to technological and environmental solutions, fostering international cooperation is essential for addressing global weather challenges. Weather knows no borders, and many weather-related disasters requirecoordinated efforts across nations to effectively respond and recover. Collaborative initiatives such as the World Meteorological Organization (WMO) and international climate agreements like the Paris Agreement facilitate information sharing, research collaboration, and collective action to address climate-related risks and build resilience to extreme weather events.Moreover, investing in infrastructure resilience can help communities better withstand the impacts of severe weather events. Building robust infrastructure systems, such as flood defenses, stormwater management systems, and resilient buildings, can minimize damage and disruption caused by hurricanes, floods, and other natural disasters. Additionally, integrating nature-based solutions such as green infrastructure and ecosystem restoration can enhance resilience while providing co-benefits such as improved air and water quality.Education and public awareness are also critical components of weather resilience efforts. By increasing understanding of weather-related risks and promotingpreparedness measures, individuals and communities canbetter anticipate and respond to extreme weather events. Public education campaigns, community workshops, and school curricula can empower people with the knowledge and skillsto protect themselves and their property during emergencies.In conclusion, improving weather conditions requires a multifaceted approach that combines technological innovation, environmental stewardship, international cooperation, infrastructure resilience, and public education. By implementing these strategies collectively,we can build a more resilient and sustainable future in which communities are better equipped to withstand the challenges of a changing climate and enjoy the benefits of more predictable and favorable weather conditions.。
如何提高糟糕的天气情况英语作文
如何提高糟糕的天气情况英语作文Title: Coping with Inclement Weather: Strategies for Improvement.Weather, being a natural force, often presents challenges that require adaptation and resilience from individuals and communities. When the weather turns sour,it can cause disruptions in daily life, affecting transportation, work, school, and social activities. However, with proactive measures and smart planning, we can mitigate the negative impacts of bad weather and even turn some of these challenges into opportunities.1. Improving Infrastructure:Infrastructure is often the backbone of any community's ability to weather storms and other adverse weather conditions. Investing in resilient infrastructure, such as stormwater drains, floodwalls, and underground utility lines, can help reduce the impact of heavy rain and wind.Additionally, well-maintained roads and bridges can ensure smoother evacuations and emergency responses.2. Encouraging Preparedness:Individual and community preparedness is crucial in应对糟糕的天气情况. Dissemination of weather forecasts and warnings through multiple channels, including television, radio, and social media, can help people make informed decisions about travel, work, and other daily activities. Encouraging people to stock up on essential supplies like food, water, and first-aid kits, and to have emergency plans ready, can significantly reduce the impact of unexpected weather events.3. Adopting Technological Solutions:Technological advancements have opened up new avenues for improving weather forecasting and response. For instance, the use of satellites, radar, and weather stations can provide more accurate and timely weather information. This information can then be used to developmore effective emergency response plans and to warn people well in advance of potentially dangerous weather conditions.4. Promoting Sustainability:Climate change is making extreme weather events more frequent and severe. Promoting sustainable practices, such as reducing carbon emissions, conserving water, andplanting more trees, can help mitigate the impact ofclimate change and reduce the frequency of extreme weather events. Additionally, sustainable building practices, such as green roofs and rain gardens, can help cities and towns better absorb and manage stormwater, reducing the risk of flooding.5. Improving Emergency Response:When bad weather strikes, a quick and effective emergency response is crucial. This requires well-trained and equipped emergency services, as well as strong coordination between different agencies. Regular training exercises and simulations can help ensure that emergencyresponders are ready to handle any situation. Additionally, having a centralized communication system that can quickly and accurately disseminate information to all relevant parties can greatly improve the efficiency of emergency responses.6. Enhancing Community Resilience:Community resilience is about more than just infrastructure and emergency response. It's also about building a culture of preparedness and mutual assistance within a community. Encouraging people to participate in community-based activities like volunteerism, disaster drills, and neighborhood watch programs can help foster a sense of collective responsibility and resilience. This, in turn, can make communities stronger and more resilient in the face of adverse weather conditions.In conclusion, improving our response to bad weather requires a multifaceted approach that involves improving infrastructure, encouraging preparedness, adopting technological solutions, promoting sustainability,improving emergency response, and enhancing community resilience. By taking these steps, we can reduce the impact of bad weather on our daily lives and create safer, more resilient communities.。
向政府提建议改善环境问题英语作文
Suggestions to the Government onEnvironmental ImprovementAs the world continues to urbanize and industrialize, the environmental challenges facing our planet are becoming increasingly urgent. From air pollution to water scarcity, these issues pose a significant threat to our health, well-being, and future generations. It is, therefore, imperative that governments worldwide take bold and decisive actions to address these pressing environmental concerns.Firstly, the government should prioritize the implementation of sustainable energy policies.Transitioning from fossil fuels to renewable sources like solar and wind power is crucial in reducing greenhouse gas emissions and mitigating the effects of climate change. By providing incentives and subsidies for renewable energy projects, the government can encourage private sector participation and accelerate the pace of this transition. Secondly, the government must invest in waste management and recycling initiatives. Effective waste management systems can significantly reduce the amount of waste sent to landfills and incinerators, therebyminimizing the release of harmful pollutants into the environment. Recycling can also conserve natural resources and reduce the need for new materials, further contributing to environmental sustainability.Thirdly, the government should enforce strict environmental regulations and penalties for those whoviolate them. By ensuring that industries and businesses comply with environmental standards, the government canhelp prevent pollution and protect ecosystems. Stringent enforcement of environmental laws is essential to maintaining a clean and healthy environment for all.Moreover, the government must promote public awareness and education on environmental issues. By educating the public on the importance of conservation and sustainability, the government can create a culture of environmental responsibility and encourage individuals to make eco-friendly choices in their daily lives. This includes promoting sustainable modes of transportation, reducing single-use plastics, and conserving water and energy.Lastly, the government should collaborate with other nations to tackle environmental challenges globally. Issueslike climate change and biodiversity loss require a global response. By working together, countries can share best practices, pool resources, and develop innovative solutions to address these global environmental problems.In conclusion, the government has a pivotal role to play in improving the environment. By prioritizing sustainable energy policies, investing in waste management and recycling, enforcing strict environmental regulations, promoting public awareness and education, and collaborating globally, the government can help create a cleaner, healthier, and more sustainable world for all.**向政府提建议改善环境问题**随着全球城市化和工业化的不断推进，我们地球所面临的环境挑战也日益紧迫。
2023年高考英语外刊时文精读专题05气候变化零碳排放(含答案)
2023年高考英语外刊时文精读精练(5)Climate change气候变化Heat island热岛主题语境：人与自然主题语境内容：人与环境【外刊原文】（斜体单词为超纲词汇，认识即可；下划线单词为课标词汇，需熟记。
）On March 13th, as commuters（每日往返上班者）streamed out of Chhatrapati Shivaji Terminus,a gothic revival masterpiece（哥特式复兴建筑——贾特拉帕蒂·希瓦吉终点站）in Mumbai, India’s commercial capital, they were confronted with temperatures approaching40°C, nearly7°C above normal for the time of year. The city is in the midst of a debilitating heatwave, its 13th in the past five decades, nearly half of which occurred in the past 15 years. Mumbai’s average temperature has increased by over 1°C in that period.Had those commuters crossed the street from the station and entered the city’s grand headquarters that day, they might have found cause for optimism. That afternoon politicians from the authority and the state of Maharashtra, of which Mumbai is the capital, had gathered to unveil（揭露）a “climate action plan”. The city aims to reach net-zero emissions by 2050, two decades earlier than the target set by the national government.Mumbai is extremely vulnerable to climate change.A narrow and densely populated（人口密集的）island, surrounded on three sides by the Arabian Sea, it is attacked by monsoon(季候风) rains for four months a year and routinely subject to flooding, especially during high tide. That is bad enough for thecity’s apartment-dwellers（公寓居民）. But it is even worse for the 42% of the population who live in slums（贫民窟）, which are likely to be washed away or buried by landslides（山体滑坡）.The key of the plan is a proposal to decarbonise（去碳化）Mumbai’s energy. Generating the city’s electricity, which produces nearly two-thirds of the city’s emissions, relies mostly on burning fossil fuels, particularly coal. The city wants to increase the share of renewables （可再生资源）. It is looking, for instanceinto installing solar panels（装太阳能电池板）on rooftops.Another priority is to improve the quality and efficiency of the city’s buildings.Slums, especially, are heat islands. Made of whatever materials are at hand or cheaply available, they are five or six degrees hotter than structures of good quality, making them, as the report puts it, “uninhabitable(不适于居住的)” on hot days. Moreover, the heat, damp and cramped(狭窄的)conditions make slum residents more vulnerable to disease—a less obvious risk of climate change.The plan is, however, short on details of how to achieve its ambition s. Still, in publishing one at all Mumbai has led the way among South Asian metropolises(大都市). Other cities are keen to follow suit, says Shruti Narayan of C40, who helped with the report. Chennai and Bangalore in the south have started work on their plans. Others, including Delhi and Kolkata in India, Dhaka in Bangladesh and Karachi in Pakistan have expressed interest in doing something similar.There is plenty in Mumbai’s240-page document to inspire them. One is the fact that it does not rely on using technologies that do not yet exist, a criticism at many countries’ national proposals. Another is the attention given to adaptation(coping with all the bad things already happening) and not just reducing future emissions.Details may anyway be beside the point. The real value of Mumbai’s plan is as a signalling device(信号装置)that “focuses the attention of policymakers”, states Abhas Jha, a climate specialist at the World Bank. The Paris Agreement, which committed the world to the goal of keeping the rise in temperatures to less than 2°C above pre-industrial levels, worked in much the same way, leaving countries to hash out details later. Time, though, is getting ever shorter.【课标词汇】1.stream（一群人，东西）涌，涌动；流动He was watching the taxis streaming past.他看着出租车一辆接着一辆地驶过。
提升环境的英语作文高中
提升环境的英语作文高中标题，Promoting Environmental Protection: Our Responsibility as High School Students。
Environmental protection is a global issue that concerns everyone, and as high school students, it is our responsibility to actively contribute to preserving and enhancing the environment. In recent years, the importance of environmental conservation has been emphasized more than ever before. From the alarming rate of deforestation to the pollution of our oceans, it is evident that urgent actionis needed. In this essay, we will explore various ways in which high school students can play a significant role in promoting environmental protection.Firstly, raising awareness is crucial in fostering a sense of responsibility towards the environment. High school students can organize awareness campaigns within their schools and local communities to educate others about the importance of environmental conservation. Thesecampaigns can include presentations, workshops, and interactive activities that highlight the impact of human activities on the environment. By spreading awareness, we can inspire others to take action and make environmentally-friendly choices in their daily lives.Secondly, reducing waste is essential in minimizing our ecological footprint. High school students can lead by example by practicing waste reduction techniques such as recycling, composting, and using reusable products. Schools can implement recycling programs and provide compost bins to encourage students to dispose of waste responsibly. Additionally, students can organize cleanup events in their communities to remove litter and waste from public spaces, thereby contributing to a cleaner and healthier environment for all.Furthermore, advocating for sustainable practices is key to promoting long-term environmental protection. High school students can engage in advocacy efforts by writing letters to government officials, participating in protests, and supporting environmental organizations. By voicing ourconcerns and demanding policy changes, we can influence decision-makers to implement regulations that prioritize environmental conservation. Additionally, students can support sustainable businesses and initiatives that aim to reduce carbon emissions and protect natural resources.Moreover, incorporating environmental education into the school curriculum is essential in fostering a deeper understanding of environmental issues among students. High schools can offer courses and workshops on topics such as climate change, biodiversity, and renewable energy to equip students with the knowledge and skills needed to address environmental challenges. By integrating environmental education into various subjects, we can empower students to become informed and environmentally-conscious citizens.In addition to individual actions, collaboration is key in achieving meaningful progress in environmental protection. High school students can form environmental clubs and alliances to coordinate efforts and share resources. Through collective action, we can amplify our impact and implement larger-scale projects such as treeplanting initiatives, habitat restoration, and renewable energy campaigns. By working together towards a common goal, we can create positive change and inspire others to join us in our commitment to protecting the environment.In conclusion, high school students have a crucial role to play in promoting environmental protection. By raising awareness, reducing waste, advocating for sustainable practices, incorporating environmental education, and collaborating with others, we can make a significant difference in preserving and enhancing the environment for future generations. As stewards of the planet, it is our responsibility to take action and ensure a sustainable and thriving world for all.This essay aims to highlight the importance of environmental protection and provide practical suggestions for high school students to contribute to this cause. Through collective efforts and individual actions, we can create a brighter and more sustainable future for our planet.。
关于全球变暖应对措施的高考英语作文
关于全球变暖应对措施的高考英语作文全文共3篇示例，供读者参考篇1Global warming is becoming one of the most pressing environmental issues of our time. The increase in average global temperatures is leading to a range of negative impacts on our planet, including rising sea levels, extreme weather events, and habitat loss. In order to mitigate and adapt to these changes, it is crucial that decisive action is taken at both the national and international levels.One of the primary causes of global warming is the burning of fossil fuels, which releases greenhouse gases such as carbon dioxide into the atmosphere. In order to reduce our carbon footprint and limit the impact of climate change, it is essential that we transition to renewable energy sources such as wind, solar, and hydroelectric power. Investing in clean energy technologies not only reduces emissions but also creates new jobs and economic opportunities.Another important aspect of combating global warming is improving energy efficiency in all sectors of society. By reducingenergy consumption through measures such as energy-efficient buildings, appliances, and transportation systems, we can lower our greenhouse gas emissions and save money on energy costs. Encouraging sustainable practices in industries, agriculture, and households is essential for reducing our carbon footprint and protecting the environment.In addition to mitigation efforts, adaptation strategies are also necessary to cope with the impacts of global warming that are already occurring. This includes investing in infrastructure that can withstand extreme weather events, such as floods and hurricanes, as well as protecting natural habitats and biodiversity. Furthermore, education and awareness campaigns are crucial for informing the public about the dangers of climate change and encouraging sustainable behaviors.On an international level, cooperation and collaboration are essential for addressing global warming. The Paris Agreement, signed by nearly 200 countries in 2015, is a significant step towards reducing global greenhouse gas emissions and limiting global warming to well below 2 degrees Celsius. Countries must work together to fulfill their commitments under the agreement and strive for even more ambitious targets in the future.In conclusion, global warming is a serious threat that requires immediate action from individuals, communities, governments, and businesses around the world. By transitioning to renewable energy sources, improving energy efficiency, and implementing adaptation strategies, we can mitigate the impacts of climate change and build a more sustainable future for generations to come. It is only through collective action and cooperation that we can effectively combat global warming and protect the health of our planet.篇2Global warming is a pressing issue that is affecting our planet at an alarming rate. The increase in greenhouse gases in the Earth's atmosphere has led to a rise in average global temperatures, resulting in climate change and a range of negative environmental impacts. In order to mitigate the effects of global warming, it is essential for countries around the world to take action and implement effective measures to reduce carbon emissions and promote sustainability.One of the key strategies for combating global warming is the transition to renewable energy sources. Fossil fuels such as coal, oil, and natural gas are major contributors to greenhouse gas emissions, so it is crucial to shift towards clean andrenewable alternatives such as solar, wind, and hydropower. Investing in renewable energy infrastructure and incentivizing the use of clean energy technologies can help to reduce carbon emissions and decrease our reliance on fossil fuels.Another important aspect of addressing global warming is improving energy efficiency and conservation. By increasing energy efficiency in our homes, businesses, and transportation systems, we can reduce our overall energy consumption and lower our carbon footprint. Simple actions such as using energy-efficient appliances, insulating buildings, and carpooling can all have a significant impact on reducing greenhouse gas emissions.In addition to promoting renewable energy and energy efficiency, it is also essential to protect and restore natural ecosystems. Forests, wetlands, and other natural habitats play a crucial role in absorbing carbon dioxide from the atmosphere and mitigating the impacts of climate change. By preserving and restoring these ecosystems, we can enhance their capacity to sequester carbon and help to stabilize the Earth's climate.Furthermore, policies and regulations are needed to support and enforce these measures for combating global warming. Governments can implement carbon pricing mechanisms, suchas carbon taxes or cap-and-trade systems, to incentivize businesses and individuals to reduce their carbon emissions. Additionally, regulations on air quality, emissions standards, and environmental protections can help to ensure that industries operate in an environmentally sustainable manner.Education and awareness are also important components of addressing global warming. By raising public awareness about the causes and impacts of climate change, we can foster a culture of sustainability and encourage individuals to take action in their daily lives. Education programs in schools, public outreach campaigns, and community initiatives can all help to empower people to make informed choices that reduce their environmental impact and contribute to a more sustainable future.In conclusion, combating global warming requires a comprehensive and coordinated effort from governments, businesses, and individuals around the world. By transitioning to renewable energy, improving energy efficiency, protecting natural ecosystems, implementing effective policies, and raising awareness, we can work together to mitigate the effects of climate change and build a more sustainable future for generations to come. It is imperative that we take action now toaddress global warming and protect the health of our planet for future generations.篇3Title: Measures to Address Global WarmingGlobal warming is a major environmental issue that has been a hot topic of discussion for many years. It is a result of the increase in greenhouse gases in the atmosphere, primarily caused by human activities such as burning fossil fuels, deforestation, and industrial processes. The consequences of global warming are far-reaching, including rising sea levels, extreme weather events, and disruptions to ecosystems.In order to combat global warming and its effects, it is crucial for individuals, communities, governments, and industries to take action. There are various measures that can be implemented to reduce greenhouse gas emissions and mitigate the impacts of climate change.One important strategy is to switch to renewable energy sources such as solar, wind, and hydropower. These sources are clean and sustainable, unlike fossil fuels which release large amounts of carbon dioxide when burned. By investing in renewable energy infrastructure, countries can reduce theirreliance on coal, oil, and gas, and decrease their carbon footprint.Another key mitigation measure is to improve energy efficiency in buildings, transportation, and industries. This can be achieved through adopting energy-efficient technologies, improving insulation, and promoting public transportation and carpooling. By using energy more efficiently, we can reduce our energy consumption and lower greenhouse gas emissions.In addition to reducing emissions, it is important to adapt to the impacts of climate change that are already occurring. This includes designing infrastructure that can withstand extreme weather events, implementing early warning systems for natural disasters, and protecting vulnerable ecosystems and species. By preparing for the effects of global warming, we can minimize the damage and protect communities and wildlife.Furthermore, individuals can play a role in addressing global warming by making simple changes to their daily lives. This can include reducing water usage, recycling and composting, eating less meat, and supporting sustainable businesses. By making environmentally conscious choices, we can lower our carbon footprint and set an example for others to follow.Governments also have a crucial role to play in tackling global warming. They can implement policies and regulations to limit greenhouse gas emissions, such as carbon pricing, renewable energy incentives, and emissions standards. By creating a supportive policy environment, governments can encourage businesses and individuals to adopt sustainable practices and technologies.International cooperation is also essential in addressing global warming, as climate change is a global issue that requires a coordinated response. Countries must work together to set ambitious emission reduction targets, share technology and expertise, and provide support to developing nations that are most vulnerable to the impacts of climate change.In conclusion, global warming is a pressing challenge that requires urgent action from all sectors of society. By reducing greenhouse gas emissions, improving energy efficiency, adapting to climate change, and promoting sustainable lifestyles, we can make a positive impact on the environment and create a more sustainable future for generations to come. It is up to all of us to take responsibility for our actions and work towards a cleaner, healthier planet.。
提升雅思水平英语作文模板
提升雅思水平英语作文模板Title: Improving Your IELTS Writing Skills。
Introduction。
The International English Language Testing System (IELTS) is a standardized test that measures the English language proficiency of non-native English speakers. One of the key components of the IELTS exam is the writing section, which requires candidates to demonstrate their ability to write in an academic style. As such, it is crucial fortest-takers to develop strong writing skills in order to achieve a high score. In this article, we will explore some effective strategies and tips for improving your IELTS writing skills.Understanding the Task。
Before you start writing, it is essential to carefully read and understand the task. The writing section of theIELTS exam consists of two tasks: Task 1, which requires candidates to write a report based on visual information, and Task 2, which involves writing an essay in response to a given question. It is important to pay close attention to the instructions and ensure that you fully understand what is being asked of you.Developing a Clear Structure。
改善空气问题的措施英语作文
改善空气问题的措施英语作文英文回答：Air pollution is a major environmental issue that affects the health of millions of people around the world. It can cause a variety of health problems, including respiratory diseases, heart disease, and cancer. Air pollution also contributes to climate change.There are a number of things that can be done to improve air quality. One important step is to reduce the emissions of air pollutants from vehicles. This can be done by improving fuel efficiency, promoting the use of public transportation, and encouraging people to walk or bike instead of driving.Another important step is to reduce the emissions ofair pollutants from power plants. This can be done by using cleaner fuels, such as natural gas or renewable energy sources, and by installing pollution control devices.Finally, it is important to reduce the emissions of air pollutants from industrial sources. This can be done by implementing pollution control measures, such as scrubbers and filters.In addition to these measures, there are a number of things that individuals can do to improve air quality. These include:Conserving energy by turning off lights and appliances when not in use.Using public transportation, walking, or biking instead of driving whenever possible.Choosing products that are made from recycled materials.Reducing waste by composting and recycling.Planting trees and other vegetation.By taking these steps, we can all help to improve air quality and protect our health and the environment.中文回答：空气污染是一个重大的环境问题，影响着全世界数百万人的健康。
英语作文模板提高分数
英语作文模板提高分数Captivating the grader's attention with an eye-catching introduction is the first step to scoring high in English composition. A well-crafted essay template can be the secret weapon to elevate your writing game. Start with a hook that draws the reader in, be it a thought-provoking question, a startling fact, or a compelling narrative.Next, lay out your thesis statement clearly, setting the stage for the arguments you will present. The body paragraphs should be structured with a clear topic sentence, followed by evidence and analysis that support your main points. Ensure each paragraph flows seamlessly into the next, creating a cohesive narrative that is easy to follow.To deepen the impact, use a variety of sentencestructures and a rich vocabulary that demonstrates your language proficiency. However, avoid jargon and complex words that might confuse the reader. Clarity is key in effective communication.As you approach the conclusion, succinctly summarize your main points, reinforcing your thesis and leaving the reader with a memorable final thought. A powerful conclusion can be the difference between a good essay and a great one.Finally, remember to proofread your work for any grammatical errors or awkward phrasing. A polished essay notonly reflects your writing skills but also your attention to detail.By mastering the art of the essay template, you can transform your English composition skills and boost your grades. It's not just about filling pages with words; it's about crafting a compelling story that resonates with the reader and showcases your understanding of the subject matter. Embrace the template, and let your voice be heard through the power of well-structured and articulate writing.。
乐泰胶使用指南
“Do It Right” User’s GuideThe “WHEN, WHERE & HOW” to UseLoctite® Maintenance Products12The primary function of this User’s Guide is to help you, the maintenance professional, with the proper selection and use of Loctite® products. Awide variety of preventative maintenance, as well as repair techniques, are explained in step-by-step detail. Consider this a supplemental service manual for every piece of equipment in your plant. Our goal is to make it easier for you to use our products to your benefit for faster repair times, reduced downtime, and extended equipment life. Additional information on these products, as well as others, is available by contacting your local Henkel adhesives and sealants representative at the telephone number listed on the back cover of this guide.INTRODUCTION Introduction to Anaerobic Adhesives and Sealants 4Why Use a Primer? 4 THREADLOCKING Through Holes (Bolts and Nuts) 5Blind Holes (Cap Screws, etc.) 5Blind Holes (Studs, etc.) 6Adjustment Screws 6Pre-assembled Fasteners 7Threadlocker Quick Selector 7 THREAD SEALING Standard Fittings – Pipes, Hydraulic, or Air 9Pipe Unions 9Compression Fittings 10Flared/Swaged Fittings 10Hose Ends – Air & Hydraulic 11Thread Sealant Quick Selector 11 TABLE OF CONTENTS PageSILICONESSTRENGTHEN KEYED Standard Duty 19 ASSEMBLIES Heavy Duty 20Repairing Badly Wallowed Keyway 21 SHAFT MOUNTED Repairing Badly Worn Shaft 22 ASSEMBLIES Slip Fit – Light/Heavy Duty 23Press Fit 24Shrink Fit 25 HOUSED COMPONENTS Slip Fit 26Repairing Badly Worn Housing 27Component Centering 28Sealing/Retaining – Metallic Seal 29Retaining Compound Quick Selector 30 DISASSEMBLY Threadlocking, Thread Sealing & Retaining 31 BONDING Introduction to Bonding Adhesives 32Bonding Assembly 32Surface Preparation 33Adhesive Quick Selector 33O-Ring Making 34Bonding Metal Label 34 RUSTPROOFING Optimum Use 35 CLEANING General Purpose Parts Cleaning, Hand Cleaning 36-37 FLUID COMPATABILITY 38-39 CHARTORDERING Product Listing/Order info. 40-42 TROUBLESHOOTING433Each one of these functions is based upon control of five major variables: strength,viscosity, adhesion, flexibility, and temperature resistance. These five parameters giveanaerobics users considerable latitude in adjusting properties for optimum performance in specific application areas.Another variable that should be considered is the substrate in which the adhesive willbe applied. For certain substrates or other special requirements, the use of a primeris recommended.WHY USE A PRIMER?1. Primers activate inactive surfaces.2. Primers speed cure times for faster return to service.3. Primers speed curing through larger gaps and deep threads.4. Primers substantially speed cure times on cold parts.5. Primers act as cleaning agents.Active surfaces (primer optional): brass, copper, bronze, iron, soft steel, nickel.Inactive surfaces (primer required): aluminum, stainless steel, magnesium, zinc, black oxide, cadmium, titanium, others.41. Clean all threads (bolt and hole) with Loctite® ODC-Free Cleaner & Degreaser.2. I f necessary, spray all threads with Loctite®7649 Primer or Loctite®7471 Primer.Allow to dry.3. S quirt several drops of Loctite®263 Best Ever Threadlocker down the sides of the8WHEN TO USE PRIMERSPrimers are used when the surfaces to be threadlocked and sealed are not active enough to cause curing to take place or when the cure is required to be accelerated. The table below shows common materials and when to use primer.Select the correct primer from the above.CHARCTERISTICS/ADVANTAGES OF ANAEROBIC THREADLOCKERS• Flat washer can still be used with threadlockers.• Threadlockers lubricate threads for proper assembly torque tension ratio.• Threadlockers work on all size and types of fasteners (SAE or Metric).• Threadlocker strength is selectable (High, Medium, Low) depending on requirements.• Threadlockers improve breakaway and prevailing torque.• Threadlockers lock and seal, preventing corrosion and leakage.• High strength threadlockers can be disassembled with heat (250°C for 5 minutes).IMPORTANT NOTE: Do not use anaerobic threadlockers on most thermoplastics (ABS, PVC, etc). Softening and/or stress cracking may occur. Anaerobic threadlockers can be used with 7649 Primer on Nylon and thermoset plastics. All anaerobic threadlockers have high chemical resistance.1. D isassemble and, if necessary, spray all components with Loctite ®7649 Primer or Loctite ® 7471 Primer. Allow 30 seconds to dry.2. Apply a thin coating of Loctite ® 567 PST ® Thread Sealant to union face.3. Apply a band of Loctite ® 567PST ® Thread Sealant to male threads.PIPE UNIONS7471 Primer onto threaded parts (male and female). Allow 30 seconds to dry. Note: Primer is not required for brass parts.2. A pply a band of Loctite ® PST ® Thread Sealant to male threads starting one to two threads from end of pipe.3. Assemble parts snugly. Do not overtighten.4. If initial pressure exceeds 1000 psi*, wait 30 minutes before pressurizing. N ote: • F or general purpose thread sealing, use Loctite ®565 PST ® Thread Sealant or Loctite ® QuickStix 561 PST ® Pipe Sealant.• F or fine filtration systems requiring zero contamination, use Loctite ® 569 orLoctite ® 542 Thread Sealant for hydraulic/pneumatic fittings.• F or easier disassembly or large diameter fittings, use Loctite ® 567 ThreadSealant.• I f sealing chemicals or strong acids/bases, refer to Fluid Compatibility Chart. • I f sealing potable water systems, use Loctite ® 577 Pipe Sealant orLoctite ® 55 Pipe Sealing Cord.• Do not use on oxygen or strong oxidizers (chlorine). • For PVC or ABS pipe, use Loctite ® 5331 No More Leaks.*Depending on conditionsPST ® Band PST ® Band PST ® Band1. Slide fitting nut and ferrule back approximately 20mm from end of tubing.2. I f necessary, spray the entire assembly with Loctite®7649 Primer.Allow 30 seconds to dry.Note:Primer is not required for brass parts.3. A pply a thin coating of Loctite®567 PST® Thread Sealant to tubing whereferrule will be located.4. S lide ferrule forward over Loctite®567 PST® Thread Sealant coated tubing, then apply1. D isassemble and, if necessary, apply to all components Loctite®7649 Primer orLoctite®7471 Primer. Allow 30 seconds to dry.2. Apply a thin coating of Loctite®567 PST® Thread Sealant to fitting face.3. Apply a band of Loctite®567 PST® Thread Sealant to male threads.4. Assemble parts snugly.10LOCTITE® BRAND THREAD SEALANT qUICK SELECTOR FLUID COMPATIBILITYAll Metal Fittings577 High PressurePipe Sealant (HighStrength)7649500 psi10,000 psi(24hrs)n/a-55°C to150°CAll Metal Fittings5770 High TempSteam and Gas(High Strength)7649500 psi10,000 psi(24hrs)235 psi-55°C to280°C1. Refer to Fluid Compatibility Chart.2. Contact your local Industrial Distributor.3. C all Henkel Technical Information. See back cover for the Henkel Technical Informationnumber in your area.2. Insert barbed hose stem into hose I.D. with slight twisting motion.3. Install appropriate hose clamp.4. A pply a coating of Loctite®569 PST® Thread Sealant to male hose stem threads uponinstallation or adding accessory device. Tighten snugly.N ote:Loctite®569 PST® Thread Sealant may attack synthetic rubber tubing.WHEN TO USE PRIMERSPrimers are used when the surfaces to be threadlocked and sealed are not active enough to cause curing to take place or when the cure is required to be accelerated. The table below shows common materials and when to use primer.Select the correct primer from the table.CHARACTERISTICS/ADVANTAGES OF ANAEROBIC THREAD SEALING• Anaerobic thread sealants flow into and completely fill all voids, eliminating leak paths.• Anaerobic thread sealants seal and threadlock simultaneously.• Thread sealants work on all size and types of fittings (see quick selector).• Thread sealant strength is selectable (Medium or Low) depending on requirements.• Thread sealants can be disassembled with normal tools.• Loctite®55 is a non curing impregnated nylon cord.IMPORTANT NOTE: D o not use anaerobic sealants on plastic pipe or plastic fittings.For plastic fittings use Loctite®55.1. I MPORTANT! TAKE PROPER SAFETY PRECAUTIONS WHEN WORKING WITH FLAMMABLELIQUID TANKS. AVOID USE WITH COMPRESSIBLE GASSES.2. Clean the repair area with Loctite® ODC-Free Cleaner & Degreaser.3. Roughen a 25mm - 50mm radius around hole with emery cloth. Clean again.4. Prepare a metal disc patch slightly larger than hole.5. Mix Loctite®3805 Steel & Aluminium Epoxy Filler (A and B) as per directions.6 Apply a thin layer of Loctite®3805 to roughened area.7. Immediately position disc patch over hole.8. Apply a cover layer of Loctite®3805 over disc patch and Epoxy layer 1.9. Allow to cure before service use:a. Liquid storage — 1 hour.b. Low pressure (under 1000kPa) — 1 hour.c. High Pressure — Not Recommended over 1000kPa.10. Paint as required.SEALING CRACKS1. Drill termination holes to prevent further cracking.2. Follow directions above. Modify as needed.SEALING PINHOLES1. Follow directions above. No disc patch needed.1. I MPORTANT! TAKE PROPER SAFETY PRECAUTIONS IF WORKING WITH FLAMMABLELIQUID TANKS. AVOID USE WITH COMPRESSIBLE GASSES.2. Wire brush to remove paint, rust, etc. from repair area.3. Clean repair area with Loctite® ODC-Free Cleaner & Degreaser.4. Apply localized heat to bring repair area to approximately 120°C.5. Allow repair area to cool to approximately 85°C.6. Brush or spray sealant on repair area.Note:• Steel – Use Loctite®290 Threadlocker at 85°C.• A luminum/Stainless Steel – Use Loctite®290 Threadlocker at 50°C. Note:• Not recommended for “blowholes.”• Maximum porosity sealed – 0.1mm.7. A llow to cure for 30 minutes (High Pressure, above 150 psi — 1 hour).8. C lean with Loctite® ODC-Free Cleaner & Degreaser to remove excess sealant.Do not grind.9. Paint as required.Note:Casting repair uses same procedure.SEALING NEW WELDS — PREVENTATIVE MAINTENANCE1. Remove all slag and scale while hot.2. Apply sealant when weld is 85°C and falling.3. Follow information above.1. R emove old gasketing material and other heavy contaminants with Loctite® Chisel®Gasket Remover. Use mechanical removal technique if required.Note:Avoid grinding.2. Clean both flanges with Loctite® ODC-Free Cleaner & Degreaser.3. S pray Loctite®7649 Primer or Loctite®7471 Primer on only one surface. Allow 1-2minutes to dry.4. A pply a continuous bead of Loctite® Gasket Eliminator® Flange Sealant to the othersurface.Note:Circle all bolt holes with sealant, if appropriate.5. Mate Parts. Assemble and tighten as required.Note:I mmediate assembly not required; however, avoid delaysover 45 minutes.6. Allow to cure:a. No pressure – immediate serviceb. Low pressure (up to 500 psi) – 30 to 45 minutesc. High pressure (500 to 2500 psi) – 4 hoursd. Extreme high pressure (2500 to 5000 psi) – 24 hoursLOCTITE® BRAND GASKETING qUICK SELECTORUse Product Gap Fill Temp. RangeGeneral 518 Gasket Eliminator®0.5mm -55°C to 150°C General 515 Gasket Eliminator®0.5mm -55°C to 150°C High Temperature 510 Gasket Eliminator®0.25mm -55°C to 200°C1. R emove old gasketing material and other heavy contaminants with Loctite® Chisel®Gasket Remover. Use mechanical removal technique if required.Note:Avoid grinding.2. Clean both flanges with Loctite® ODC-Free Cleaner & Degreaser.3. S pray Loctite®7649 Primer on both flange faces and both sides of the precut gasket.Allow 30 seconds to dry.4. S mear Loctite® Gasket Eliminator® Flange Sealant to both sides of precut gasket withWHEN TO USE PRIMERSPrimers are used when the surfaces to be sealed are not active enough to cause curing to take place or when the cure is required to be accelerated. The table below shows common materials and when to use primer. Select the correct primer from the table.CHARCTERISTICS/ADVANTAGES OF GASKETING• Form-in-place gasketing resists compression set.• Form-in-place gasketing fills all voids eliminating gaps.• Form-in-place gasketing provides a universal fit and is always in stock.• Form-in-place gasketing provides on-site applications and saves you time.• Form-in-place gasketing is easy to clean up.IMPORTANT NOTE: Do not use anaerobic flange sealants on most thermoplastics (ABS, PVC, etc). Softening and/or stress cracking may occur. Anaerobic flange sealants can be used with 7649 Primer on Nylon and thermoset plastics.LOCTITE ® MAXX SERIES SILICONES QUICK SELECTOR1. R emove old gasketing material and other heavy contaminants with Loctite ® Chisel ®Paint Stripper.2. Clean both flanges with Loctite ® ODC-Free Cleaner & Degreaser.3. A pply a continuous bead of Loctite ® Instant Gasket or Loctite ® Maxx ® highperformance silicones to sealing surface. Circle all bolt holes. Note: • Use proper bead diameter to seal flange width and depth. • Minimize excessive material “squeeze in.”4. Assemble within 10 minutes by pressing together. Tighten as required.5. Clean up any excess or squeeze out.6. C ure times will vary with temperature, humidity, and gap. Typical full cure time is24 hours.1 Continuous service. Intermittent temperature higher than established range.2 Seals instantly at zero gap.1. Clean all parts with Loctite® ODC-Free Cleaner & Degreaser.2. I f necessary, apply onto all parts (I.D. and O.D.) Loctite®7649 Primer or Loctite®7471Primer.3. A pply Loctite®660 Quick Metal® Retaining Compound or Loctite®641 Bearing Mountcoating into keyway and on key.4. A pply dab(s) of Loctite®® Retaining Compound or Loctite®641Bearing Mount onto shaft opposite keyway or evenly spaced around shaft.Assemble parts. Wipe off excess.ASSEMBLY1. Clean all parts with Loctite® ODC-Free Cleaner & Degreaser.2. A pply a coating of Loctite®609 or Loctite®680 Retaining Compound coating aroundshaft, into keyway, and on key.3. Assemble parts. Wipe off excess.231. S ame as above, except use Loctite ® 620 Retaining Compound with Loctite ® 7471Primer.ASSEMBLY1. Clean the shaft O.D. and component I.D.2. C ool the shaft to cause contraction, or heat the component tocause expansion.3. A pply a brush film of Loctite®641 Retaining Compound to theshaft or lower temperature part.4. Install component and allow temperatures to equilibriate.5. Wipe off excess.N ote:L octite®641 Retaining Compound will add lubricity for easier assembly while sealing and protecting the bond area from environmental exposure and fillinggaps for a more complete contact area.2526ASSEMBLY1. Roughen housing I.D. with emery cloth or abrasive media.EXCESSIVE / EVEN WEAR1. Position the component in bore.2. Select three equilateral mounting points.3. Determine the radial gap at those points.4. Select appropriate shim stock.609 Bead1. C lean the housing I.D. and seal O.D. with Loctite® ODC-Free Cleaner & Degreaser.2. Spray both the housing and seal with Loctite®7649 Primer.3. A pply a bead of Loctite®609Retaining Compound to the leading edge of metallicseal O.D.Note:V irtually any Loctite® retaining product will work here. Medium strengthliquid is recommended due to normal gap and strength requirement.4. Install as usual.5. Wipe off excess.6. Allow to cure for 30 minutes.Note:•L octite®609 Retaining Compound is normally used with worn sealhousings to prevent leakage or slippage.•I t is not generally necessary to remove pre-applied sealant from seal O.D.29Shaft Mount – Shrink fitMedium Strength 641 Retaining Compound NONEShaft Mount – Slip FitSmall Gap (0.05mm radial max.) 609 Retaining Compound 7649Larger Gap (0.25mm radial max.) 660 Quick Metal® Retaining Compound 7471Maximum Strength (0.25mm radial max.) 680 Retaining Compound 7471M aximum Temperature (204°C) 620 Retaining Compound 7649/7471(0.2mm radial max.)Medium Strength 641 Retaining Compound 7649Housing Mount – Press FitMaximum Strength 609 Retaining Compound NONEMedium Strength 641 Retaining Compound 7649Low Strength 243 Best Ever Threadlocker NONEHousing Mount – Slip FitMaximum Strength 680 Retaining Compound NONEHigh Strength 660 Quick Metal® Retaining Compound NONEControlled Strength 660 Quick Metal® Retaining Compound 7471Medium Strength 641 Retaining Compound 7649Low Strength 243 Best Ever (QuickStix 248)Threadlocker 7649/7471 Note: • S ofter metals (aluminum, bronze, etc.) provide lowershear strengths than ferrous components.• E xcessive gap reduces shear strengths.• I deal surface finish — 50 to 80 rms.Refer to Technical Data Sheets for more information.30Disassemble with hand tools.HIGH STRENGTH PRODUCTS• Apply localized heat (260°C or higher) to assembly for 5 minutes.32TYPES OF JOINTSOVERLAP WIDTHChemical MethodsCleaning process that uses solvents to dissolve contaminants.Chemical examples• Solvent Dip: Immersomg on solvent• Solvent Wipe: Rubbing with solvent-soaked wpe• Vapour Degreasing: Solvent in vapour form• U ltrasonic Cleaning: Solvent dip method with high frequency sound waves that vibratethe dirt awayLOCTITE® BRAND ADHESIVE QUICK SELECTOR331. C ut the starting end of the cord stock with a clean razor blade. Ensure the cut is cleanand square. Do not touch the clean cut end.2. M easure cord stock to appropriate length. For precise measurement, use Loctite® O-RingTool or the ruler provided in the Loctite® O-Ring Making Kit.3. C ut the measured end of the cord stock with a clean razor blade.Ensure the cut is clean and square to optimize bond area.4. A pply one drop of Loctite®406 Instant Adhesive and mate the two ends of thecord stock.1. C lean surface.2. S pray Loctite®7387 Depend® Activator onto main part. Let dryfor two minutes.3. A pply Loctite®330 Depend® Adhesive onto back of label.4. P ress label onto activated surface and hold for a few seconds.5. H andling strength reached in 5 minutes. Full cure in 24 hours.3435RUST CONVERSION TIME AND APPEARANCE:Two coats of Loctite ® 754 Extend ® Rust Treatment are recommended.The first coat should develop a purple-black color within seconds. The second coat should dry to a black color. The second coat should be applied within 15-30 minutes of the first coat.APPLICATION CONDITIONS:Loctite ® 754 Extend ® Rust Treatment may be applied when surface and air are between 10°C and 32°C. Reaction is slower at lower temperatures. If temperature is too hot, film may surface dry and bubble. High humidity is beneficial; it slows drying but assists rust conversion. Loctite ® 754 Extend ® Rust Treatment should not be applied in conditions of condensing humidity (e.g., fog, dew), on ice, in rain or in heavy sea (salt) spray atmospheres. Steel surface may be damp but not wet (i.e., continuous visible film of water). DO NOT APPLY LOCTITE ® 754 EXTEND ® RUST TREATMENT TO SURFACES IN DIRECT SUNLIGHT.APPLICATION EQUIPMENT METHODS:Loctite ® 754 Extend ® Rust Treatment may be applied by brush, roller, or spray. Brush or roller is suitable for small areas. Avoid sags and ridges and keep edges wet by coating about a square yard at a time. Roll away from previously coated area and then roll back. Do not pour unused material back into the original container. NEVER add solvents to Loctite ® 754 Extend ® Rust Treatment.Spray application is recommended for larger areas. Airless spray equipment is faster, and provides more effective conversion due to improved surface penetration. Conventional air-spray equipment may be used, but Loctite ® 754 Extend ® Rust Treatment may requirethinning up to 10% with water for proper spraying.36greases, oils, lubrication fluids, metal cuttings and fines, for all surfaces to be bonded with adhesives. It is designed to be used as a spray or in immersion cleaning processes, at room temperatureor heated.37Premoistened with a powerful cleaning formula, Loctite ® Industrial Hand Wipes are used for removing tar, grease, wax, ink, paint, lubricants and adhesives. While effective on tough grime the fresh citrus scented cleaning formula is enhanced with natural oils and emollients.The abrasive, yet non-scratching, fabric aids in cleaning and replaces the need for messy and ineffective rags and soap.Typical applications for this product include maintenace, industrial, plumbing, manufacturing, transportation, painting, marine, agriculture and recreation.LOCTITE ® INDUSTRIAL HAND WIPESAcetaldehyde l Acetate Solvents l Acetimide l Acetic Acid l Acetic Acid n Acetic Acid - glacial l Acetic Anhydride l Acetone l Acetyl Chloride l Acetylene (Liquid Phase) l Acid Clay l Acrylic Acid l Acrylonitrile l Activated Alumina l Activated Carbon l Activated Silica l Alcohol-Allyl l Alcohol-Amyl l Alcohol-Benzyl l Alcohol-Butyl l Alcohol-Ethyl l Alcohol-Furfuryl l Alcohol-Hexyl l Alcohol-lsopropyl l Alcohol-Methyl l Alcohol-Propyl l Alum-Ammonium l Alum-Chrome l Alum-Potassium l Alum-Sodium l Alumina l Aluminum Acetate l Aluminum Bicarbonate l Aluminum Bifluoride l Aluminum Chloride l Aluminum Sulfate l Ammonia Anhydrous n Ammonia Solutions n Ammonium Bisulfite l Ammonium Borate l Ammonium Bromide l Ammonium Carbonate l Ammonium Chloride l Ammonium Chromate l Ammonium Fluoride l Ammonium Fluorosilicate l Ammonium Formate l Ammonium Hydroxide n Ammonium Hyposulfite l Ammonium Iodide l Ammonium Molybdate l Ammonium Nitrate l Ammonium Oxalate l Ammonium Persulfate l Ammonium Phosphate l Ammonium Picrate l Ammonium Sulfate l Ammonium Sulfate Scrubber l Ammonium Sulfide l Ammonium Thiocyanate l Amyl Acetate l Amyl Amine l Amyl Chloride l Aniline l Aniline Dyes l Anodizing Bath l Antichlor Solution l Antimony Acid Salts l Antimony Oxide l Antioxidant Gasoline l Aqua Regia n Argon l Armeen § l Arochlor § l Aromatic Solvents lArsenic Acid lAsbestos Slurry lAsh Slurry lAsphalt Emulsions lAsphalt Molten lBagasse Fibers lBarium Acetate lBarium Carbonate lBarium Chloride lBarium Hydroxide nBarium Sulfate lBattery Acid nBattery Diffuser Juice lBauxite (See Alumina) lBentonite lBenzaldehyde lBenzene lBenzene Hexachloride lBenzene in Hydrochloric Acid lBenzoic Acid lBenzotriazole lBeryllium Sulfate lBicarbonate Liquor lBilge Lines lBleach Liquor lBleached Pulps lBorax § Liquors lBoric Acid lBrake Fluids lBrine Chlorinated lBrine Cold lBromine Solution †Butadiene lButyl Acetate lButyl Alcohol lButyl Amine lButyl Cellosolve § lButyl Chloride lButyl Ether - Dry lButyl Lactate lButyral Resin lButyraldehyde lButyric Acid nCadmium Chloride lCadmium Plating Bath lCadmium Sulfate lCalcium Acetate lCalcium Bisulfate lCalcium Carbonate lCalcium Chlorate lCalcium Chloride lCalcium Chloride Brine lCalcium Citrate lCalcium Ferrocyanide lCalcium Formate lCalcium Hydroxide lCalcium Lactate lCalcium Nitrate lCalcium Phosphate lCalcium Silicate lCalcium Sulfamate lCalcium Sulfate lCalcium Sulfite lCamphor lCarbitol lCarbolic Acid (phenol) nCarbon Bisulfide lCarbon Black lCarbon Tetrachloride lCarbonic Acid nCarbowax § lCeric Oxide lChalk lChemical Pulp lChestnut Tanning lChina Clay lChloral Alcoholate lChloramine lChlorinated Hydrocarbons lChlorinated Paperstock lChlorinated Solvents lChlorinated Sulphuric Acids nChlorinated Wax lChlorine Dioxide nChlorine Liquid nChlorine Dry nChloroacetic Acid nChlorobenzene Dry lChloroform Dry lChloroformate Methyl lChlorosulfonic Acid nChrome Acid Cleaning nChrome Liquor nChrome Plating Bath nChromic Acid 10% lChromic Acid 50% (cold) nChromic Acid 50% (hot) nChromium Acetate lChromium Chloride lChromium Sulfate lClassifier lClay lCoal Slurry lCoal Tar lCobalt Chloride lCopper Ammonium Formate lCopper Chloride lCopper Cyanide lCopper Liquor lCopper Naphthenate lCopper Plating, Acid Process lCopper Plating, Alk. Process lCopper Sulfate lCore Oil lCorundum lCreosote lCreosote-Cresylic Acid lCyanide Solution lCyanuric Chloride lCyclohexane lCylinder Oils lDe-Ionized Water lDe-Ionized Water LowConductivity lDetergents lDeveloper, photographic lDextrin lDiacetone Alcohol lDiammonium Phosphate lDiamylamine lDiatomaceaus Earth Slurry lDiazo Acetate lDibutyl Phthalate lDichlorophenol lDichloro Ethyl Ether lDicyandamide lDielectric Fluid lDiester Lubricants lDiethyl Ether Dry lDiethyl Sulfate lDiethylamine lDiethylene Glycol lDiglycolic Acid lDimethyl Formamide lEmulsified Oils lEnamel Frit Slip lEsters General lEthyl Acetate lEthyl Alcohol lEthyl Amine lEthyl Bromide lEthyl Cellosolve § lEthyl Cellosolve Slurry § lEthyl Formate lEthyl Silicate lEthylene Diamine lEthylene Dibromide lEthylene Dichloride lEthylene Glycol lEthylenediamine Tetramine lFatty Acids lFatty Acids Amine lFatty Alcohol lFerric-Floc lFerric Chloride lFerric Nitrate lFerric Sulfate lFerrocence-Oil Sol lFerrous Chloride lFerrous Oxalate lFerrous Sulfate10% lFerrous Sulfate (Sat) lFertilizer Sol lFlotation Concentrates lFluoride Salts lFluorine, Gaseous or Liquid lFluorolube lFluosilic Acid lFlux Soldering lFly Ash Dry lFoam Latex Mix lFoamite lFormaldehyde (cold) lFormaldehyde (hot) †Formic Acid (Dil cold) lFormic Acid (Dil hot) †Formic Acid (cold) lFormic Acid (hot) †Freon § †Fuel Oil lFuming Nitric Red nFuming Sulfuric nFuming Oleum nFurfural lGallic Acid *Gallium Sulfate lGasoline-Acid Wash lGasoline-Alk. Wash lGasoline Aviation lGasoline Copper Chloride lGasoline Ethyl lGasoline Motor lGasoline Sour lGasoline White lGluconic Acid lGlue-Animal Gelatin lGlue-Plywood lGlutamic Acid lGlycerine Lye-Brine nGlycerol lGlycine lGlycine Hydrochloride lGlycol Amine lGlycolic Acid lGlyoxal lGold Chloride lGypsum lHalane Sol lHalogen Tin Plating lHalowax § lHarvel-Trans 0il lHeptane lHexachlorobenzene lHexadiene lHexamethylene Tetramine lHexane lHydrazine lHydrazine Hydrate lHydrobromic Acid nHydrochloric Acid lHydrocyanic Acid nHydroflouric Acid nHydrogen Peroxide (dil) lHydrogen Peroxide (con) †Hydroponic Sol lHydroquinone lHydroxyacetic Acid lHypo lHypochlorous Acid lInk lInk in Solvent-Printing lIodine in Alcohol lIodine-Potassium Iodide lIodine Solutions lIon Exchange Service lIon Exclusion Glycol lIrish Moss Slurry lIron Ore Taconite lIron Oxide lIsobutyl Alcohol lIsobutyraldehyde lIsooctane lIsopropyl Alcohol lIsocyanate Resin lIsopropyl Acetate lIsopropyl Ether lItaconic Acid lJet Fuels lJeweler's Rouge lJig Table Slurry lKaolin-China Clay § lKelp Slurry lKerosene lKerosene Chlorinated lKetone lLacquer Thinner lLactic Acid lLapping Compound lLatex-Natural lLatex-Synthetic lLatex Synthetic Raw lLaundry Wash Water lLaundry Bleach lLaundry Blue lLaundry Soda lLead Arsenate lLead Oxide lLead Sulfate lLignin Extract lLime Slaked lLime Sulfur Mix lLiquid Ion Exchange lLithium Chloride lLOX (Liquid 02) nLudox lManganese Chloride lManganese Sulfate lMelamine Resin lMenthol lMercaptans lMercuric Chloride lMercuric Nitrate lMercury lMercury Dry lMethane lMethyl Alcohol lMethyl Acetate lMethyl Bromide lMethyl Carbitol lMethyl Cellosolve § lMethyl Chloride lMethyl Ethyl Ketone lMethyl Isobutyl Ketone lMethyl Lactate lMethyl Orange lMethylamine lMethylene Chloride lMineral Spirits lMixed Acid, Nitric/Sulfuric nMonochloracetic Acid lMorpholine lMud lNalco Sol. lNaphtha lNaphthalene lNaval Stores Solvent lNematocide lNeoprene Emulsion lNeoprene Latex lNickel Acetate lNickel Ammonium Sulfate lNickel Chloride lNickel Cyanide lNickel Fluoborate lNickel Ore Fines lNickel Plating Bright lNickel Sulfate lNicotinic Acid nNitrate Sol. lNitration Acid(s) nNitric Acid nNitric Acid10% nNitric Acid 20% †Nitric Acid Anhydrous nNitric Acid Fuming nNitro Aryl Sulfonic Acid lNitrobenezene-Dry lNitrocellulose lNitrofurane lNitroguanidine lNitroparaffins-Dry lNitrosyl Chloride lNorite Carbon lNuchar lOakite § Compound lOil, Creosote lOil, Emulsified lOil, Fuel lOil, Lubricating lOil, Soluble lOleic Acid, hot lOleic Acid, cold lOre Fines-Flotation lOre Pulp lOrganic Dyes lOxalic Acid cold lOzone, wet n38。
环境改善英文作文
环境改善英文作文英文：Improving the environment is a crucial issue that weall need to address. As an individual, I believe that we can make a difference by taking small steps towards a greener future.Firstly, we can reduce our carbon footprint by using public transportation or carpooling instead of driving alone. This not only reduces air pollution but also saves money. In addition, we can also choose to walk or bike for short distances, which is not only good for the environment but also for our health.Secondly, we can reduce our waste by practicing the three R's: reduce, reuse, and recycle. We can reduce our consumption of single-use plastics by bringing our own reusable bags, water bottles, and coffee cups. We can also reuse items such as containers and jars instead of throwingthem away. And finally, we can recycle items such as paper, plastic, and glass to reduce the amount of waste that ends up in landfills.Lastly, we can support environmentally-friendly businesses and products. By choosing to buy from companies that prioritize sustainability, we are sending a message that we care about the environment and are willing to support those who share the same values.Overall, improving the environment requires collective effort, but as individuals, we can make a difference by taking small steps towards a greener future.中文：改善环境是我们都需要解决的一个重要问题。
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
使用TPV提升车用天窗的防水性
Mark Steward,Benoit Singher,Shawn Jyawook,Jim Browell and JIM kameyama（原著）①孙武(译）②
①Jyco sealing Technologies ②中国橡胶工业协会材料研究检测中心
热塑性硫化橡胶（TPVs）在车用天窗放水密封条中用量逐年增高。
在2007年Jyco公司生产100万个车用天窗放水密封条。
理想的性能、价格和较低的变形使TPV相对于其他材料具有更大的优势。
密封材料性能
优异的压缩变形性
能是TPV满足车用天窗
放水密封条的基础。
通
常，天窗密封条的厚度为
4～6毫米。
因为材料的
使用环境决定材料的压
缩变形性能要好，方能胜
任车用天窗放水密封条
的使用要求。
TPV在玻璃
上的压缩变形已经测试
过，因为使用环境为有压
力和高温的环境下，所以在其使用寿命内可以损失20%～30%的压缩力。
从图1试验结果可以看出，TPV 在80℃及一定的压力下持续使用，损失掉25%的压缩力。
对比三元乙丙车顶天窗密封胶条性能（图2）相同的条件下，TPV的性能优于三元乙丙。
需要注意的是，TPV和三元乙丙都有交联，但交联方式不同。
压缩变形性能与使用材料的性能及配方和工艺的设计有关。
同时还需要考虑材料的种类、挤出工艺性能参数等，有时候这些性能对于生产厂而言更加重要。
设计初衷
由于车用天窗是可以活动
的，所以密封条要适应多种使
用状态—关、全开和半开。
同
时，密封条的刚性大有助于天
窗玻璃的安装。
密封胶条有许
多项性能需要检测，其中较为
重要的是使用材料的检测
（FEA）。
密封胶条必须避免由于
长时间的使用而导致的产品
变形和意外的漏水情况。
因为车用天窗密封胶条的
使用环境要求必须有一条凹槽（方便玻璃移动的凹槽），所以胶条必须保证在有凹槽的形态下完成密封的功能。
这对于使用环境只有2～3毫米的胶料而言是不太容易的。
这就需要设计商和生产商在研发和生产商加大投入，特别是天窗灯位置对密封胶条的耐受度影响（天窗灯发热，高温会影响性能密封胶条的寿命）。
车用天窗灯和天窗密封胶条的耐受度影响着密封胶条的压缩变形及压缩永久变形性能。
当密封条的使用环境为
较小的压力以及车顶灯的距
离为8mm时就可以满足密封胶
条的使用要求。
材料及工艺的
选择可以决定密封条在使用
寿命内能否保证标准的尺寸
及压缩变形（图3）。
接头
密封胶条需经过挤出工
艺制成成品后方能安装到天
窗上。
因为天窗密封条的形状为环形，所以挤出后的密封胶条需要首尾相接，变成环形。
此接头的工艺在模具中进行。
接头强度对最终的性能尤其重要。
与热固性橡胶不同，热塑性TPV的接头强度接近拉伸强度。
TPV的接头强度不仅高于热固性橡胶，同时完全满足整车生产商的要求（图4）。
为了提高接头处的完整性，需
要在接头处和其表面进行打磨使
其尽量的光滑，这样会减少漏水情
况的发生。
噪音
车用天窗使用体验与车主息
息相关，可能会影响到车主购车。
一些车用天窗在开启和关闭的时
候具有类似沙沙的噪音，这些噪音
会影响车主对车的体验最终会影
响车主选车。
根据GM 98429,REV,D
的顾客听觉测试，TPV的噪音等
级为0.6，远远低于3.0的标准
（表1）。
较低的噪音源于光滑的挤出
表面。
只有玻璃与金属喷漆之间的
摩擦系数低于0.2时才能有如此
低的噪音。
由于较低的摩擦系数
使得不粘层可以减少看不见的水流向玻璃，同时可以提升大概10%的吸水能力。
TPV弹性体的其它性能
TPV做为天窗密封胶条的一个材料的选择，已经广泛使用。
TPV做密封条有较少的挥发。
有时车内温度较高，如果密封胶条中的易挥发物质迁移到玻璃表面，这会影响玻璃的美观。
同时会使玻璃表面不符合FMVSS 规定，还会降低用户的体验。
另外，由于密封胶条的使用环境要求，导致密封胶条无法清洗，这点需要注意。
TPV胶条的燃烧速率小于FMVSS规定的50%的上限。
TPV密封条的撕裂强度比热稳定性更重要。
因为密封条的安装环境中有形状尖锐的东西，所以在安装过程中密封条可能出现破损的情况，如果撕裂强度低，则这种可能性将加大。
TPV密封胶条的比重为0.92，相对于三元乙丙密封条比重降低了10%～15%。
降低质量可以使用密度更小的TPV材料或降低密封胶条的厚度和用量等。
同时降低质量可以降低整车的油耗。
近来，一些整车厂商要求各部件要颜色匹配。
通常在产品验证阶段对产品的颜色有要求。
同样整车生产商需要部件供应商提供此种部件的耐久性数据，以便于颜色在长时间的使用后不变色。
颜色匹配是指各部件之间的形状、颜色、色彩、光泽、亮度等和谐统一。
整车的各部件需要整洁一致，例如玻璃和密封条的裸露出来的部分的颜色等。
如果因为密封胶条中使用的炭黑不符合标准，则有可能导致密封胶条的颜色与反光镜、车身及其他部件颜色不一致。
氙弧光暴露试验和碳弧暴露试验结果说明TPV密封条的的△E小于目前使用最多的TPO密封条的试验结果—3.0。
另外，TPV天窗密封胶条能够保证整车的颜色匹配，使天窗的表现更为完美。
如果需要，天窗密封胶条可以着色，还可以按照要求制作成有纹理的外观，同样也可以将车内部分与车外部分制成不同的颜色。
TPV弹性体对环境的影响
因为使用清洁能源可以较大幅度的减少二氧化碳的排放量，所以TPV密封胶条的整个工艺产生很少的二氧化碳及其他易挥发有机化合物。
TPV中用到三元乙丙橡胶，同时还可以使用汽车轮胎上的三元乙丙再生胶，重新制成汽车配件。
TPV密封胶条由于比重较低，所以成品的重量相对三元乙丙密封胶条要低。
同时TPV密封胶条的摩擦系数也低。
所以使用TPV密封胶条的可以节省能源。
对比TPV天窗密封胶条和三元乙丙天窗密封胶条对于环境的影响结果可以
看出，TPV天窗密封胶条对
环境的影响要小。
因为密
封胶条的使用环境要求，
及TPV可以使用再生三元
乙丙橡胶作为原料，所以
TPV制作密封胶条对环境
的影响要明显小于三元乙
丙橡胶（图5，表2）。
结论
TPV弹性体是车用天
窗密封胶条的理想材料。
长时间的耐老化性能和长时间色彩变化试验证明TPV作为车用天窗密封胶条卓越的性能。
由于TPV材料较低的比重和可重复利用性能使用TPV对环境的影响较低。
此外，TPV密封胶条相对于热固性硫化橡胶可以大幅度的减少碳排放量，综上所述，TPV一种可持续发展的新型材料。