有机硅涂料研究进展
有机硅耐高温涂料的研究
有机硅耐高温涂料的研究近年来,随着科技的不断发展和进步,有机硅材料在各个领域得到了广泛的应用,其中耐高温涂料是研究的一个热点领域。
有机硅耐高温涂料以其杰出的性能和广泛的应用前景,吸引了众多科研人员的关注。
本文将对有机硅耐高温涂料的研究进行探讨。
首先,我们需要明确耐高温涂料的定义。
耐高温涂料是指能够在高温环境下工作并保持其本来性能的涂料。
由于常规涂料在高温环境下会发生脱落、变色、失去防护功能等问题,所以开发出耐高温涂料对于许多工业领域非常重要。
有机硅是最常用的一类材料,具有出色的耐高温性能。
有机硅耐高温涂料由有机硅树脂、耐高温颜料和增塑剂等组成。
有机硅树脂以其较低的分子量、低粘度、低表面能等特点,能够形成均匀连续的薄膜,并且有很好的附着力、耐高温、耐化学腐蚀等性能。
耐高温颜料能够在高温下保持其颜色不褪色、不变质,并且具有较好的保护作用。
增塑剂则能够改善涂料的柔韧性和延展性。
在有机硅耐高温涂料的研究中,主要关注以下几个方面:涂料配方设计、涂料制备工艺、性能测试和应用研究。
涂料配方设计是有机硅耐高温涂料研究的基础。
通过选择合适的有机硅树脂、耐高温颜料和增塑剂,合理控制它们的比例和配方,可以获得具有优异性能的耐高温涂料。
同时,还可以引入一定的交联剂和稳定剂,提高涂料的耐化学腐蚀性能和稳定性。
涂料制备工艺是有机硅耐高温涂料研究的关键。
有机硅树脂通常采用溶剂法合成,可以通过控制反应条件和原材料的选择来改变树脂的性质。
涂料的制备过程包括原料的配制、树脂溶解、颜料分散、增稠和精馏等步骤。
通过改变反应条件、添加合适的助剂和控制工艺参数,可以获得具有优异性能的有机硅耐高温涂料。
性能测试是评价有机硅耐高温涂料性能的重要方法。
常用的测试项目包括耐高温性能、耐化学腐蚀性能、附着力、硬度、耐磨损性、耐候性等。
通过对涂膜样品的热重分析、热循环、酸碱腐蚀和划伤等测试,可以获得涂料的热稳定性、化学稳定性和力学性能等信息。
应用研究是有机硅耐高温涂料研究的最终目的。
有机硅胶粘剂的研究进展
有机硅胶粘剂的研究进展肖凯斐(西安工业大学北方信息工程学院,机电信息系,陕西省西安市710032)摘要 :综述了有机硅胶粘剂的组成、种类、性能及其应用,并对硅橡胶胶粘剂在粘接性、导热性、固化性能的研究进展进行了叙述。
关键词 :硅橡胶硅树脂有机硅压敏胶胶粘剂Study on high temperature-resistant anaerobicadhesiveXiaokaifei( Xi'an Technological University North Institute Of InformationEngineering,Mechanical and electrical information system ,Shan'xiProvince,Xi'an 710032)Abstract: The compositions, categories, properties and applications of organosilicon adhesives were reviewed. Moreover , the bonding ability, heat conductivity and curing of silicone rubber type adhesive w ere introduced.Keywords:Silicone rubber Silicone resin Organosilicon pressure sensitive adhesive Adhesive有机硅材料是一类性能优异、功能独特、用途极广的新材料,是高分子新型材料中产业规模最大的材料之一,是一种关系着技术革新、国防现代化、国民经济发展及人民生活水平提高的新材料。
有机硅聚合物是含有硅元素的众多高分子化合物的总称,因主链以硅氧键(-Si-O-)组成,侧链可链接各种有机基团,具有无机和有机聚合物的双重性能。
有机硅涂料的研究及应用进展
有机 硅产 品 的 基本 结 构 单 元 是 硅 ~氧 链 节 , 侧 链 则是 与硅 原 子 相 连 的各 种 有 机基 团 。因此 , 在有 机硅 中既 含有 “ 机 基 团 ” 有 ,又 含 有 “ 机 无 结构” ,这 种特 殊 的结 构 使 其集 有 机 物 的特 性 与
无机 物 的功能 于一 身 。
善其附着力 、固化性能、施工性能 ,使之更适合
于涂料应用的要求 , 同时也会在一定程度上降 但
低涂 层 的耐 热性 能 。 122 有 机硅 改性 涂料 .. 122 1 环氧 树脂 改性 有机 硅涂 料 .. .
刘成楼以有机硅改性丙烯酸树脂为基料 ,添 加纳米氧化锡锑及其它助剂 ,制成具有一定隔热 功 能 ,且不 影 响室 内采光 的透 明 隔热涂 料 ,涂膜 保持了良好的物理性能 ,尤其是耐沾污性 、耐候 性 、环 保性 优异 … 。
腐蚀等作用 。与常温隔热涂料相比,中温隔热涂
料 除要 求具 有 同样 出色 的隔热性 能 以外 ,还 需要 在 环境 温 度 条 件 下 保 持 自身 结 构 、性 能 及 隔 热
功能。
12 1 有机硅 涂 料 ..
硅 树脂 清漆 可 耐 20~20℃ ;以硅 树 脂 为 0 5
基料 ,加入铝粉 、耐热填料 、玻璃料配制的涂料
环 氧树脂 具 有 优 良 的机 械性 能 、 电气 性 能 、
耐化 学 品性 、粘 接性 能 以及 易 成 型加工 、成 本低
有机硅树脂涂料 ,可在 80o 左右 的环境下使 5 C 用 ,2mi n内隔热温 差 在 60℃ 以上 ,并 保 留原 6
漆膜 。
廉等优点 ,结合硅树脂 的耐高温 、耐候 、憎水及 电气强度高等特点,能够制备 出性能优异的耐高 温隔热涂料。改性硅树脂的合成过程中,最大的
有机硅陶瓷涂料的研究进展
有机硅陶瓷涂料的研究进展陈子辉;刘仲阳;林家祥【摘要】基于溶胶-凝胶法制备的有机硅陶瓷涂料具有有机涂料无法比拟的综合优势,如硬度高、耐候性好、阻燃无烟、安全无毒等,在不粘锅、铝幕墙、地铁机车等领域得到了广泛应用.本文概述了有机硅陶瓷涂料的制备工艺、配方组成对涂层性能的影响,讨论了在有机硅陶瓷涂料配方设计时需要避免的误区.此外,还介绍了有机硅陶瓷涂料最新研究成果:柔性有机硅陶瓷涂料及塑料-陶瓷复合材料制备技术,并分析了有机硅陶瓷涂料的未来发展趋势.%Silicone ceramic coatings made through sol-gel technique show unparalleled comprehensive advantages over traditional organic coatings,such as high hardness,excellent weathering resistance,flame retardant,safe and nontoxic.They have been widely used in non -stick pan,aluminum curtain wall,subway locomotive.Herein,the relationship between the preparation processes,formula and the performance of ceramic coatings was mon misconceptions in the formulation design were also discussed.Furthermore,two kinds of novel silicone ceramic coatings including flexible silicone ceramic coating and plastic silicone ceramic coating were introduced.Further trend was forecasted as well.【期刊名称】《涂料工业》【年(卷),期】2017(047)011【总页数】7页(P1-7)【关键词】有机硅;陶瓷涂料;溶胶-凝胶法;增韧;高性能涂料【作者】陈子辉;刘仲阳;林家祥【作者单位】中海油常州涂料化工研究院有限公司,江苏常州213016;中海油常州涂料化工研究院有限公司,江苏常州213016;中海油常州涂料化工研究院有限公司,江苏常州213016【正文语种】中文【中图分类】TQ637陶瓷涂料并没有严格的定义,一般来说,固化后具有类似于陶瓷的性能,尤其是高硬度和高耐磨性能的涂料均可称之为陶瓷涂料。
有机硅涂料(siliconecoating)
有机硅涂料(silicone coating)Research progress of organosilicon coatingsSilicone is the first widely used elements of the organic polymer compound, has excellent performances due to its unique chemical structure, widely used in various fields of national economy, but also plays an important role in the paint industry. Silicone coatings are organosilicon polymer and silicone modified polymer as main film coating material, it has excellent heat resistance, electrical insulation, corona resistance, radiation resistance, moisture resistance and weather resistance, stain resistance, monk water and chemical corrosion resistance and other properties, in recent years in the improvement and application performance of the products have been the rapid development of.1 silicone resin coating made of organic silicon resin film material, mainly heat-resistant, weather resistant silicone anti-corrosion coating, scratch resistant transparent silicone coating, release and moisture-proof coatings and radiation resistant coatings and other varieties.Coating with silicone resin with three methyl chlorosilane (CH3 SiCl3), two methyl two chloro silane [(CH3) 2SiCl2], three (C6H5SiCL3) phenyl chlorosilane, two phenyl chlorosilane two [(C6H5) 2SiCl2] and methyl phenyl chlorosilane CHO two (C6H5) SiCl2 as raw materials for hydrolysis polycondensation prepared. The effect of monomer structure, number and proportion of functional groups on properties of coatings is very important. The types of organic groups connected on silicon atoms also affect the properties of resins. Differentorganic groups can make organosilicon resins exhibit different properties. For example, when the organic group is methyl silicone resin, with thermal stability, releasability, hydrophobicity and arc resistance; for phenyl, given the oxidation stability of silicone resin, crystalline polymer can be destroyed in a certain range;As the vinyl group, the curing property of organosilicon resin can be improved, and coupling property is brought into being; when phenyl ethyl is used, the compatibility of organosilicon resin and organic substance can be improved. The base can be introduced in the siloxane backbone, increase its compatibility with alkyd resin and polyester resin; introducing phenylene and two phenyl ether subunit, biphenyl subunit of aromatic subunit and silicon carbon boron polymers, radiation resistance, the temperature can reach 300 to 500 DEG C; the backbone structure for the Si-N bond is silicone polymer, its thermal stability at 400 deg. In practical application, different organosilicon monomers can be selected according to the requirements, and different organic groups are induced in the organosilicon resin.Chenguang Research Institute of chemical industry with a viscosity of 20 ~ s, 40mPa - hydroxy silicone oil (CH3) and 2SiCl2 methyl triethoxysilane as raw material, control of nR / NSI is 1.3 ~ 1.4, the quality of 2SiCl2 (CH3) and hydroxyl silicone oil ratio was 7O:3O, and the drop of water way at the temperature of 50 1H hydrolysis. Get the methyl silicone resin has good hardness and elasticity, can be used for flame retardant coatings were prepared by metal film resistors. Chinese Academy of sciences so CH3SiCl3 as the main raw material,acetone and xylene as the solvent, soluble trapezoid with narrow molar mass distribution of poly methyl silicone resin was synthesized by the high temperature coating resin with a certain amount of aluminum powder, RTV silicone rubber prepared by 250 DEG C, old 1000 h, its flexibility, oil resistance and resistance have good corrosion resistance. HeFei University of Technology siloxane silicate four functional groups with three functional groups, through strict control of total hydrolysis reaction, the base material is prepared with silicate and silicone polymer properties, the binder and filler and other auxiliary materials according to a certain proportion of organic silicon heat-resisting coating made of.2 modified silicone resin coating while the silicone resin has many excellent properties, but also has some problems: the general need for high temperature (150 ~ 200 DEG C) curing, curing time, the construction of large area is not convenient; adhesion to the substrate, organic solvent resistance, high temperature mechanical strength of the film is not good, the price more expensive etc.. In order to overcome these shortcomings, organic silicone resin was used to modify the organic resin. Modified silicone resin usually has the advantages of two resins, which can make up for some deficiencies in the performance of the two resins, thereby improving performance and expanding application fields. There are two kinds of modification methods, physical mixing and chemical modification. The effect of chemical modification is better than that of physical blending. Chemical modification is mainly on the end or side chain of polysiloxane chain, and then react with other polymers to produce block, graft or interpenetrating polymer networks, thus obtaining newproperties. In the coatings industry, silicone modified organic resins are mainly alkyd resins. Acrylic resin, epoxy resin, etc..2.1 silicone modified alkyd resin coatingSilicone modified alkyd resin coatings is not only an alkyd resin paint film curing at room temperature and physical and mechanical properties, and has the advantages of good heat resistant silicone resin, UV aging resistance and good water resistance characteristics, coating is an excellent comprehensive performance. The first modification was to add the silicone resin directly to the alkyd reaction kettle that reached the end point,The weatherability of alkyd resin is improved greatly. Another modification is to prepare reactive organosilicon oligomers to react with free hydroxyl groups on alkyd resins, and also to use organosilicon oligomers as polyols and alkyd resins for polycondensation. The alkyd resin modified by chemical reaction has better weatherability. Hunan University prepared by alcoholysis hydroxyl alkyd prepolymer and end to hydrolysis or different functional silicone prepolymer prepared by polycondensation reaction synthesis (A B) silicone alkyd type n block copolymer, and the copolymer as base material made of varnish; comprehensive performance of the varnish excellent, not only has the alkyd resin varnish film flexibility, room temperature curing, impact strength and advantages of good adhesion, but also greatly improve the heat resistance, ageing resistance and anti corrosion properties of water medium.2.2 silicone modified acrylic resin coatingSilicone modified acrylic resin coating has excellent weatherability. It has the advantages of light retention, color retention, easy powdering and good gloss. It is widely used for pre coating of metal sheets, painting of machine equipment and weatherproof decoration and decoration of interior and exterior walls of buildings. Silicone modified acrylic resin has two types, solvent and emulsion, of which silicone acrylic latex coating has excellent weatherability, stain resistance, chemical resistance, is an environmentally friendly green paint. Hubei University uses a water-soluble radical initiator, with hydrogen containing silicone oil and butyl acrylate as raw material, the excellent performance of silicone / acrylic emulsion was synthesized by emulsion polymerization method; the emulsion has good acid and alkali. High and low temperature resistance and electrolyte stability, the coatings prepared with it have good weatherability and stain resistance. Ji'nan Chemical Research of acrylate monomer and D4 and vinyl seven methyl siloxane ring four as raw material, by adding a certain amount of grafting agent, using a batch of polyacrylate stable synthesis of polysiloxane emulsion. Sichuan Province Building Materials Industry Research Institute by pre emulsification process, the activity of silicone and acrylate monomer by emulsion copolymerization by organosilicon modified acrylic emulsion coating prepared with the emulsion of stain resistance, excellent comprehensive performance.Fudan University with vinyl silicone monomer and acrylate, methyl acrylate and acrylic acid hydroxy ester monomer polymerization by seed emulsion was stable with excellentproperties of silicone modified acrylate emulsion. Acrylic silicone resin was modified by organosilicon monomer in Zhejiang University, and silicone acrylic emulsion coating was prepared. Polysiloxane polyacrylate interpenetrating network coating synthesis of Chongqing University, the coating is colorless and transparent, high hardness, strong adhesion, acid deposition, heat aging and has good permeability, can be used as anti weathering materials of rock friction moment.HH silicone acrylic resin developed by Shanghai Academy of building research is suitable for the preparation of weather resistant coatings with high weatherability for more than 15 years. HeFei University of Technology with TEOS hydrolysis condensation part to polysiloxane with hydroxyl acrylic resin was prepared by organic silicone modified acrylic resin; the resin in acid and alkali resistance, salt resistance, solvent resistance and impact strength has significantly improved compared with that of pure polysiloxane, and high temperature resistance is obviously improved acrylic resin. Jiangsu architectural materials research and Design Institute introduced a certain amount of organosilicon functional group in the synthesis of acrylic resin, and prepared the solvent modified silicone resin coating with high weatherability. The Chinese Academy of Sciences of Lanzhou Institute of Chemical Physics with hydroxyl terminated poly two methyl siloxane, in two under the action of azo isobutyronitrile, and methacrylic acid (ester) monomers by solution copolymerization, silicon rubber modified acrylic resin, the resin has good heat resistance.2.3 silicone modified epoxy resin coatingThe modification of epoxy resin with organosilicon can not only reduce the internal stress of epoxy resin, but also increase the toughness of epoxy resin and improve its heat resistance. The poly (two siloxane) modified novolac epoxy resin has greatly reduced the internal stress and improved the cracking resistance index of the Institute of chemistry of Chinese Academy of sciences. Wuhan Research Institute of materials protection and the compatibility with epoxy resin and reactive silicone oligomer polycondensation of the prepared silicone modified epoxy resin has advantages of both epoxy resin and silicone resin, not only improve the heat resistance, but also has good corrosion resistance. Two point fourModification of styrene acrylate emulsion with organosilicon modified styrene acrylic emulsion coating can obviously improve its weatherability, gloss, elasticity and durability. Shanghai University of Engineering Science by graft copolymerization of synthetic silicone modified styrene acrylic emulsion has the excellent properties of silicone and acrylic resin coating, good elasticity, the elongation was significantly higher than that of styrene acrylic emulsion coating. Silicone modified styrene acrylate emulsion building coating was prepared by adding a certain amount of organic silicone to styrene acrylic emulsion polymerization in Shanghai traffic science and technology university,The coating has good water resistance, scouring resistance and durability.2.5 silicone modified other resin coatingSilicone modified polyurethane coatings are widely used in Aircraft Skins, large tank surfaces, building roofs and cultural relics protection. The Chinese Academy of Sciences of Lanzhou Institute of Chemical Physics with hydroxyl terminated poly two methyl siloxane and alcohol solution of castor oil modified polyurethane prepolymer was modified, the curing rate of the blend is improved after the film adhesion, hardness, heat resistance is also improved. It also uses organosilicon modified urushiol resin as base material to prepare paint with resistance to boiling water and water vapor permeability. It can be used for corrosion protection of equipment for a long time. Shanghai Research Institute of building science by using epoxy resin, acrylic resin, silicone resin copolymer in the main chain introduced special hydrophilic functional groups made of water soluble epoxy silicone acrylic resin, the resin has excellent physical and mechanical properties, and has good resistance to aging. Anti ultraviolet and anti-corrosion properties. The coatings made of this resin are basically non-toxic, easy to construct, good in coating properties and good in decorative effect. In the research of Chenguang Chemical Research Institute, copolymerization of styrene, methyl methacrylate, acrylonitrile and organosilicon was used to develop a kind of impregnating agent for electronic devices.3 silicone rigid wear-resistant coatingStudy of organosilicon hard coating on silica sol as Q chain components, functional silicon or carbon functional silane to alkyl chain as a T component, in the presence of water, alcohol and acid catalyst by hydrolysis and polycondensation are partof TQ type silicon resin pre silicon containing hydroxyl polymer solution. By adjusting the variety of RSi (OR ') 3 and the ratio of silica sol to the additive, the variety and solvent of the additive, we can make a kind of hard and wear-resistant coating with various properties. The viscosity of organosilicon coating is usually 4~25 m, Pa, s, and the solid content is 20% ~ 30%. After coating on the surface of the substrate, the remaining silicon hydroxyl groups are condensed under heating condition to form a network structure of hardened wear-resistant layer.Silicone reinforced wear-resistant coating is superior to UV curing acrylic resin hardening coating in both wear resistance and weather resistance. Transparent plastics processed by organosilicon stiffening coatings have been widely used as glasses, car lampshades, instrument scales, compact discs and special architectural windows.4 ConclusionWith the further research, development and improvement of new materials, the performance of silicone coating will be more excellent to meet the different needs of different industries or fields. With the improvement of people's life and beautify the demands for living rooms and buildings, silicone coating with excellent weatherability and stain resistant performance in the decoration of building has a broad application prospect; and, with the increasing awareness of environmental protection silicone coatings towards non pollution, green environmental protection development direction.Refractory paint TK-000Product ingredients: refractory paint TK-000 series by silicone resin as the main raw material, the product features: high temperature of 800 DEG, acid and alkali resistance, good blackness, high hardness, good weatherability. Application: metal, iron surface coating. For example the fireplace. Through the international quality standard: SGS non-toxic inspection standard. Viscosity: 65 + 5KU/30 C color the following 2 points: black, light adjustable hardness: H-2H dry conditions: 150 DEG C * 30 'solid content: 54% + 2% adhesion: 100% (iron) leveling: good feeling: good complementary series: silicone special solvent construction method: spraying standard packing: canned note: as the climate is different, that day water should be used in different products, more details please contact the company or the dealer.According to the characteristics of low surface energy and low viscosity of organosilicon polymer itself, it is more suitable for practical application and modified in preparation process. The range of application of modified silicone resin is wider and better, which has been proved by the development trend.The above is from the coating process. Chemical industry press. ISBN7-5025-1434-1/TQ.786) part of the third chapter silicone coating: if you can borrow this book, it might be of greater help to you;Preparation of silicone resin, usually more than two or more than two units for hydrolysis, raw materials in the following article is given. When the hydrolysis conditions are different,the composition of the intermediate product and the amount of the ring formation of the hydrolysis product are often greatly different, even though the formula is the same. Effects of various factors on hydrolysis:1. Influence of pH value of hydrolysis medium(1) acid medium; (2) neutral medium; (3) alkaline medium;2. The influence of water content in hydrolysis medium: the amount of water needed for reaction is lower than that of silane reaction, which forms the gradual hydrolysis and polycondensation reaction, limiting the formation of ring. The hydrolysis of excess water is the opposite.3, the influence of the solvent in the hydrolysis medium4 、 the influence of equipment agitation speed in hydrolysis5, the influence of temperature on hydrolysis, the higher temperature when hydrolysis, the molecular movement of components is intense, the chance of collision with each other is increased, which is beneficial to the growth of CO polycondensation, low temperature,Otherwise.Formulation formulation related factors: depending on the resin type, this factor varies:(1) the average degree of substitution of alkyl hydrocarbons(D.S.); (2) the average mass of% (including SiOx, phenyl, methyl); after a lot of chemists' careful research experience, there is a data range;Modified resin: it has the advantage of two kinds of resin, and makes up for the disadvantage of silicone resin, and makes it more suitable for coating application. General organic silicone modified organic resin: alkyd resin, polyester resin, epoxy resin, acrylic resin, polyurethane resin, phenolic resin and so on;Two methods of modification: cold spelling (physical method); chemical method;。
有机硅涂料
2 改性有机硅树脂涂料 尽管有机硅树脂具有许多优异性能,但也存在一些问题:一般需高温(150~200℃)固化,固化时间长,大面积施工不方便;对基材的附着力差,耐有机溶剂性差,温度较高时漆膜的机械强度不好,价格较贵等。为克服这些缺点,常用有机硅树脂对有机树脂进行改性。改性有机硅树脂通常兼具两种树脂的优点,可弥补两种树脂在性能上的某些不足,从而提高性能、拓展应用领域。改性方法有物理共混和化学改性两种,化学改性的效果一般比物理共混改性好。化学改性主要是在聚硅氧烷链的末端或侧链上引人活性基团,再与其它高分子反应生成嵌段、接校或互穿网络共聚物,从而获得新的性能。在涂料工业中,用有机硅改性的有机树脂主要有醇酸树脂。丙烯酸树脂、环氧树脂等。
制备有机硅树脂,一般多用两种或两种以上的单位进行水解,原料在下面文章给出了。各种单体共水解进,即使配方一样,由于控制的水解条件不同,水解后中间产物的组分和环体生成量常常相差很大。水解时各有关因素的影响:
1、水解介质PH值的影响
(1)酸性介质;(2)中性介质;(3)碱性介质;
2、水解介质中水量的影响:水解时采用低于和氯硅烷反应需要量的水量,形成逐步水解及缩聚反应,限制了环体生成。过量水水解,情况相反。
改性树脂:具有两种树脂的优点,弥补了有机硅树脂的缺点,使之更适合于涂料应用的需要。一般用有机硅改性的有机树脂有:醇酸树脂、聚酯树脂、环氧树脂,丙法);化学法;
混凝土用有机硅涂料的种类及其应用现状
有机硅改性聚酯涂料的研究进展
2 有 机 硅 改 性 聚 氨 酯 涂 料
将 有 机硅 用于 聚 氨酯 的 改性 是 改善 聚 氨酯 和 有 机 硅材 料 单一 材 料性 能 缺 陷 的一条 重 要途 径 。 改 性 方 法 既 可 以 是 将 有机 硅 与 聚 氨 酯 预 聚 体 共 聚 ,也 可 以是将 有机 硅 作 为改 性剂 直 接 添加 到聚
异氰 酸 酯 、扩 链 剂和 亲 水扩 链 剂为 主 要原 料 ,制 成 有机 硅 改性 聚 氨 酯乳 液 。该 乳液 稳 定性 好 ;聚 硅氧 烷 链段 富 集在 乳 胶膜 表 面 ,对 聚 氨酯材 料 具
附着 力而 倍受青 睐 ,大 量用于 金属 板材 的预 涂装 、 机器 设 备 的涂装 及 建 筑物 内外墙 的耐候 装 饰 。带
受 到 限制 。为充 分 发挥 有机 硅树 脂 的优 点 ,同时 克服其 缺点 ,可将 有机树 脂进 行改 性 。
有机 硅 树脂 与 其它 有机 树 脂 的反 应 可预 先在
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有 ・ ・ ・ ・ ・ ・ 机 硅 氟 资 讯
聚 、 自由基 聚合 及 加成 反应 ( 际应 用 中大 都采 实 用缩 聚反应 ) ,在 聚有 机硅氧 烷 主链 的末端 或侧链 连接 上 其 它有机 树 脂 ,形 成嵌 段 、接 枝 或互 穿 网 络共 聚 物 ;从 而赋 予 有机 硅树 脂 新 的性能 ,使其
获得新 的应用 。
有机溶剂性差 ;因固化温度高、固化时间长,不 便 于 大 面积 施工 。所 以 ,直 接 用作 涂料 的 成膜 剂
有机硅改性环氧树脂研究
有机硅改性环氧树脂研究
解答内容如下:
1.1简介
有机硅改性环氧树脂是以复相组成的环氧树脂,它完全不含芳香族构成单元,而由有机硅及不含醛的活性单体聚合而成。
由于其具有优良的抗氧化性、抗紫外线性、抗老化性,且能有效保证表面色彩的稳定性,因而有机硅改性环氧树脂在汽车涂料、玻璃纤维增强树脂等领域应用广泛。
本文主要介绍了有机硅改性环氧树脂的研究现状及其在汽车涂料、玻璃纤维增强树脂等领域的应用。
1.2有机硅改性环氧树脂的研究现状
研究显示,有机硅改性环氧树脂有着优良的抗氧化性、抗紫外线性、抗老化性,由于具有良好的机械性能,耐温性和附着力,所以其在汽车涂料、玻璃纤维增强树脂等领域得到了越来越多的应用。
随着微米和纳米材料的不断发展,有机硅改性环氧树脂的性能也在不断提高。
研究表明,有机硅改性环氧树脂在填充材料和表面改性剂的结合应用上发挥着重要作用。
为了提高有机硅改性环氧树脂的性能,人们不断改进制备工艺,以期提高有机硅改性环氧树脂的耐温性、粘度、延伸性、硬度、附着力、机械性能等性能。
有机硅的应用与研究进展
有机硅的应用与研究进展有机硅是指碳与硅构成的化合物。
它具有独特的化学结构,具有一系列优良的物理化学性能。
因此,有机硅在多个领域具有重要的应用,并且在研究领域也有不断的进展。
本文将详细讨论有机硅的应用和研究进展。
首先,有机硅广泛应用于涂料和油漆领域。
有机硅涂料和油漆具有优异的耐热性、耐候性和耐化学性能。
它们可以在高温环境下保持稳定,并且不容易受到阳光、酸、碱等化学物质的侵蚀。
此外,有机硅涂料和油漆还具有良好的附着力、耐磨性和耐腐蚀性。
因此,它们被广泛应用于汽车、建筑、船舶等领域。
其次,有机硅在塑料工业中也得到了广泛的应用。
由于有机硅具有较高的机械强度、柔韧性和耐疲劳性能,因此可以改善塑料的物理性能。
例如,在橡胶中加入有机硅可以提高其抗老化性能和耐磨性能。
在塑料复合材料中引入有机硅也可以提高其耐热性和机械强度。
此外,有机硅还可以用作塑料流动剂,可以降低塑料的粘度,改善其流动性。
此外,有机硅在医药领域也有重要的应用。
有机硅化合物可以用作药物的载体,可以改善药物的生物利用度和稳定性。
有机硅还可以用于制备生物医学材料,如生物医用硅胶。
生物医用硅胶具有良好的生物相容性和可降解性,可以用于制备支架、绷带、缝合线等医疗器械。
此外,有机硅还在电子领域具有广泛的应用。
有机硅化合物可以用于制备有机太阳能电池、有机发光二极管(OLED)等器件。
有机硅材料具有较高的电导率和光学特性,可以用于制备高效率的光电器件。
有机硅还可以用于光通信领域,可以用于制备光纤和光波导器件。
在研究方面,近年来有机硅的应用研究进展迅速。
首先,研究人员对有机硅的合成方法进行了改进和优化。
新的有机硅化合物合成方法的开发不仅提高了有机硅化合物的合成效率,还扩展了有机硅的结构多样性。
其次,研究人员对有机硅材料的性能进行了深入的研究。
他们通过调控有机硅的分子结构和聚合方式,改变了有机硅的物理化学性质,提高了其在各个领域的应用效果。
最后,研究人员还探索了有机硅材料在新型领域的应用。
有机硅表面活性剂的应用及研究进展
有机硅表面活性剂的应用及研究进展1.功能性涂料和涂层剂:有机硅表面活性剂可以作为涂料和涂层剂的分散剂、增稠剂、润湿剂和降低反应性的剂量。
有机硅表面活性剂的独特结构和性质使得涂料具有优异的附着性、耐磨性和耐化学性,并且能够提供超级疏水性和超级亲水性的性能。
2.肥皂、洗涤剂和清洁剂:有机硅表面活性剂的亲油性和亲水性可以被应用于肥皂、洗涤剂和清洁剂等产品中。
3.医药领域:有机硅表面活性剂可以在制药生产中作为辅助剂,用于增加药物的溶解度和稳定性。
4.纺织品和塑料处理剂:有机硅表面活性剂可以用作纺织品和塑料处理剂,可提高纺织品和塑料的柔软性、耐久性和抗静电性能。
5.个人护理产品:有机硅表面活性剂在个人护理产品中应用广泛,例如洗发水、沐浴露、面霜等,可提供更好的泡沫性和润滑性。
近年来1.绿色合成方法:研究人员致力于开发低能耗、低污染的合成方法,例如采用微波辅助合成、酶催化合成等。
2.分子结构设计:通过调控有机硅表面活性剂的分子结构,研究人员可以获得具有特定性质和功能的表面活性剂,如自组装性能、温度响应性能和荧光性能等。
3.纳米粒子修饰:通过将有机硅表面活性剂与纳米材料相结合,可以获得具有特殊性质和功能的复合材料,如磁性纳米粒子和金属纳米粒子修饰的有机硅表面活性剂。
4.应用拓展:近年来,有机硅表面活性剂在环境治理、油田开发和废水处理等领域的应用得到了广泛关注。
研究人员不断探索有机硅表面活性剂在新领域的应用潜力。
总结起来,有机硅表面活性剂具有广泛的应用领域,其研究进展主要体现在绿色合成方法、分子结构设计、纳米粒子修饰和应用拓展等方面。
随着对环境友好和高性能产品需求的增加,有机硅表面活性剂的研究和应用前景仍然十分广阔。
有机硅改性丙烯酸酯涂料的性能研究
由表 2可知 , 随着有机硅单 体 S 10 i 8 0含量 的增大 , -
涂膜 的附着力 逐渐增 强 , 当有机 硅 含量 达 到 3 时 , 5 涂
膜 的附着力优 良。涂膜 与基材之 间可通 过机 械结 合 、 物 理 吸附 、 形成氢 键 和化 学键 、 相互 扩 散 等作 用 结合 在 一
性 、 冲 击 性 、 磨耗 性 也 优 于 纯 丙涂 料 , 随 着有 机 硅 单 体 S-8 0含 量从 1 增 加 到 3 , 膜 的 耐 洗 刷 性 、 着 力 耐 耐 且 i 0 1 5 5 涂 附
明 显 增 强 , 冲 击性 和 耐 磨耗 性 略 有 提 高 , 韧 性 基 本 无 变化 , 涂 膜 的 硬 度 、 泽 度 和 遮 盖 力 略 有 下 降 。 耐 柔 而 光 关键词 : 机硅 ; 有 丙烯 酸 酯 ; 膜 涂
出料 , 用 。其 中有 机硅 大 单 体 S- 8 o的用 量 ( 备 i o 1 以单 体 总质量 计 ) 分别 为 0 、5 、3 、 O 和 3 。 % 1 2 3 5
1 3 涂 料 的 制 备 . 将 OP 1 、8 F( 泡 剂 ) GA 4 ( 平 剂 ) 丙 二 一0 6 1 消 、 一0 流 、
是 理想 的外 墙 装饰 涂料 。 在各 种有 机硅 改 性 丙 烯 酸 酯 乳 液 中 , 机 硅 大单 有
体 的 含量 ( 占单 体 总 质 量 比) 高 只有 2 [ 。作 者 最 0 9 ] 选 择 适 当的 聚合 工艺 , 整有机 硅 的含 量 , 得 了高 固 调 制 含量 和硅 含 量 的稳定 的有 机 硅 改 性 丙 烯 酸 酯 乳 液 , 同 时参 照 国家 标准 对该 乳液 制 备 的涂 料 涂膜 后 的性 能进
有机硅超分子材料研究进展
基于该材料,Yao 等[18]进一步开发了损伤可愈合且耐油的超分子有机硅涂层 . 该涂层具有拒各种 烷基油性、高机械强度、对不同表面的强黏附性及可靠的损伤愈合性等很少见的特性 . UPy 单元的互 补氢键可增强涂层的损伤愈合和机械性能 . 涂层/基底边界处的高密度 UPy 单元也有助于通过强氢键 形成强的界面黏附力 . 借助于 UPy 的多重氢键,该聚合物可以黏附在各种基底上 . 由图 4 可见,该涂层 对于非极性有机溶剂(正己烷、正辛烷、正十二烷、正十六烷、葡萄籽油和橄榄油)表现出很小的接触角 滞后(CAH,1°~2°),这得益于聚硅氧烷优异的滑油/脱湿特性 . 相比之下,该涂层对极性有机液体的 CAH 则有所增大 . 与非极性液体接触时,该涂层中 UPy 基元被硅氧烷链段屏蔽,并且油滴与富含硅氧 烷的表面之间的相互作用较弱,因而 CAH 较小;与极性有机液体接触时,硅氧烷主链具有更好的流动 性,暴露屏蔽的 UPy 基元,从而导致分子间相互作用和 CAH 的增大 .
近年来,具有自愈合、自修复功能的有机硅超分子材料引起了人们的广泛关注 . 超分子化学的蓬 勃发展为该类动态材料的设计提供了丰富的手段[6,7]. 超分子化学被描述为超越分子的化学,涉及利用 非共价作用构筑复杂超分子结构[8,9]. 通常,这些相互作用比共价键弱,包括氢键、配位键、范德华力、 偶极-偶极相互作用及 π-π 相互作用等[10]. 自然界存在大量利用超分子作用构筑精密复杂分子结构的 例子,包括酶、蛋白质和 DNA 等 . 在过去的 10 年里,各种各样的超分子键被引入到有机硅材料中,使 其具有了许多智能功能[11,12],如刺激响应性、自愈合性[13,14]、可逆性和适应性[15]等 .
有机硅涂料(silicone coating)
有机硅涂料(silicone coating)Research progress of organosilicon coatingsSilicone is the first widely used elements of the organic polymer compound, has excellent performances due to its unique chemical structure, widely used in various fields of national economy, but also plays an important role in the paint industry. Silicone coatings are organosilicon polymer and silicone modified polymer as main film coating material, it has excellent heat resistance, electrical insulation, corona resistance, radiation resistance, moisture resistance and weather resistance, stain resistance, monk water and chemical corrosion resistance and other properties, in recent years in the improvement and application performance of the products have been the rapid development of.1 silicone resin coating made of organic silicon resin film material, mainly heat-resistant, weather resistant silicone anti-corrosion coating, scratch resistant transparent silicone coating, release and moisture-proof coatings and radiation resistant coatings and other varieties.Coating with silicone resin with three methyl chlorosilane (CH3 SiCl3), two methyl two chloro silane [(CH3) 2SiCl2], three (C6H5SiCL3) phenyl chlorosilane, two phenyl chlorosilane two [(C6H5) 2SiCl2] and methyl phenyl chlorosilane CHO two (C6H5) SiCl2 as raw materials for hydrolysis polycondensation prepared. The effect of monomer structure, number and proportion of functional groups on properties of coatings is very important. The types of organic groups connected on silicon atoms also affect the properties of resins. Differentorganic groups can make organosilicon resins exhibit different properties. For example, when the organic group is methyl silicone resin, with thermal stability, releasability, hydrophobicity and arc resistance; for phenyl, given the oxidation stability of silicone resin, crystalline polymer can be destroyed in a certain range;As the vinyl group, the curing property of organosilicon resin can be improved, and coupling property is brought into being; when phenyl ethyl is used, the compatibility of organosilicon resin and organic substance can be improved. The base can be introduced in the siloxane backbone, increase its compatibility with alkyd resin and polyester resin; introducing phenylene and two phenyl ether subunit, biphenyl subunit of aromatic subunit and silicon carbon boron polymers, radiation resistance, the temperature can reach 300 to 500 DEG C; the backbone structure for the Si-N bond is silicone polymer, its thermal stability at 400 deg. In practical application, different organosilicon monomers can be selected according to the requirements, and different organic groups are induced in the organosilicon resin.Chenguang Research Institute of chemical industry with a viscosity of 20 ~ s, 40mPa - hydroxy silicone oil (CH3) and 2SiCl2 methyl triethoxysilane as raw material, control of nR / NSI is 1.3 ~ 1.4, the quality of 2SiCl2 (CH3) and hydroxyl silicone oil ratio was 7O:3O, and the drop of water way at the temperature of 50 1H hydrolysis. Get the methyl silicone resin has good hardness and elasticity, can be used for flame retardant coatings were prepared by metal film resistors. Chinese Academy of sciences so CH3SiCl3 as the main raw material,acetone and xylene as the solvent, soluble trapezoid with narrow molar mass distribution of poly methyl silicone resin was synthesized by the high temperature coating resin with a certain amount of aluminum powder, RTV silicone rubber prepared by 250 DEG C, old 1000 h, its flexibility, oil resistance and resistance have good corrosion resistance. HeFei University of Technology siloxane silicate four functional groups with three functional groups, through strict control of total hydrolysis reaction, the base material is prepared with silicate and silicone polymer properties, the binder and filler and other auxiliary materials according to a certain proportion of organic silicon heat-resisting coating made of.2 modified silicone resin coating while the silicone resin has many excellent properties, but also has some problems: the general need for high temperature (150 ~ 200 DEG C) curing, curing time, the construction of large area is not convenient; adhesion to the substrate, organic solvent resistance, high temperature mechanical strength of the film is not good, the price more expensive etc.. In order to overcome these shortcomings, organic silicone resin was used to modify the organic resin. Modified silicone resin usually has the advantages of two resins, which can make up for some deficiencies in the performance of the two resins, thereby improving performance and expanding application fields. There are two kinds of modification methods, physical mixing and chemical modification. The effect of chemical modification is better than that of physical blending. Chemical modification is mainly on the end or side chain of polysiloxane chain, and then react with other polymers to produce block, graft or interpenetrating polymer networks, thus obtaining newproperties. In the coatings industry, silicone modified organic resins are mainly alkyd resins. Acrylic resin, epoxy resin, etc..2.1 silicone modified alkyd resin coatingSilicone modified alkyd resin coatings is not only an alkyd resin paint film curing at room temperature and physical and mechanical properties, and has the advantages of good heat resistant silicone resin, UV aging resistance and good water resistance characteristics, coating is an excellent comprehensive performance. The first modification was to add the silicone resin directly to the alkyd reaction kettle that reached the end point,The weatherability of alkyd resin is improved greatly. Another modification is to prepare reactive organosilicon oligomers to react with free hydroxyl groups on alkyd resins, and also to use organosilicon oligomers as polyols and alkyd resins for polycondensation. The alkyd resin modified by chemical reaction has better weatherability. Hunan University prepared by alcoholysis hydroxyl alkyd prepolymer and end to hydrolysis or different functional silicone prepolymer prepared by polycondensation reaction synthesis (A B) silicone alkyd type n block copolymer, and the copolymer as base material made of varnish; comprehensive performance of the varnish excellent, not only has the alkyd resin varnish film flexibility, room temperature curing, impact strength and advantages of good adhesion, but also greatly improve the heat resistance, ageing resistance and anti corrosion properties of water medium.2.2 silicone modified acrylic resin coatingSilicone modified acrylic resin coating has excellent weatherability. It has the advantages of light retention, color retention, easy powdering and good gloss. It is widely used for pre coating of metal sheets, painting of machine equipment and weatherproof decoration and decoration of interior and exterior walls of buildings. Silicone modified acrylic resin has two types, solvent and emulsion, of which silicone acrylic latex coating has excellent weatherability, stain resistance, chemical resistance, is an environmentally friendly green paint. Hubei University uses a water-soluble radical initiator, with hydrogen containing silicone oil and butyl acrylate as raw material, the excellent performance of silicone / acrylic emulsion was synthesized by emulsion polymerization method; the emulsion has good acid and alkali. High and low temperature resistance and electrolyte stability, the coatings prepared with it have good weatherability and stain resistance. Ji'nan Chemical Research of acrylate monomer and D4 and vinyl seven methyl siloxane ring four as raw material, by adding a certain amount of grafting agent, using a batch of polyacrylate stable synthesis of polysiloxane emulsion. Sichuan Province Building Materials Industry Research Institute by pre emulsification process, the activity of silicone and acrylate monomer by emulsion copolymerization by organosilicon modified acrylic emulsion coating prepared with the emulsion of stain resistance, excellent comprehensive performance.Fudan University with vinyl silicone monomer and acrylate, methyl acrylate and acrylic acid hydroxy ester monomer polymerization by seed emulsion was stable with excellentproperties of silicone modified acrylate emulsion. Acrylic silicone resin was modified by organosilicon monomer in Zhejiang University, and silicone acrylic emulsion coating was prepared. Polysiloxane polyacrylate interpenetrating network coating synthesis of Chongqing University, the coating is colorless and transparent, high hardness, strong adhesion, acid deposition, heat aging and has good permeability, can be used as anti weathering materials of rock friction moment.HH silicone acrylic resin developed by Shanghai Academy of building research is suitable for the preparation of weather resistant coatings with high weatherability for more than 15 years. HeFei University of Technology with TEOS hydrolysis condensation part to polysiloxane with hydroxyl acrylic resin was prepared by organic silicone modified acrylic resin; the resin in acid and alkali resistance, salt resistance, solvent resistance and impact strength has significantly improved compared with that of pure polysiloxane, and high temperature resistance is obviously improved acrylic resin. Jiangsu architectural materials research and Design Institute introduced a certain amount of organosilicon functional group in the synthesis of acrylic resin, and prepared the solvent modified silicone resin coating with high weatherability. The Chinese Academy of Sciences of Lanzhou Institute of Chemical Physics with hydroxyl terminated poly two methyl siloxane, in two under the action of azo isobutyronitrile, and methacrylic acid (ester) monomers by solution copolymerization, silicon rubber modified acrylic resin, the resin has good heat resistance.2.3 silicone modified epoxy resin coatingThe modification of epoxy resin with organosilicon can not only reduce the internal stress of epoxy resin, but also increase the toughness of epoxy resin and improve its heat resistance. The poly (two siloxane) modified novolac epoxy resin has greatly reduced the internal stress and improved the cracking resistance index of the Institute of chemistry of Chinese Academy of sciences. Wuhan Research Institute of materials protection and the compatibility with epoxy resin and reactive silicone oligomer polycondensation of the prepared silicone modified epoxy resin has advantages of both epoxy resin and silicone resin, not only improve the heat resistance, but also has good corrosion resistance. Two point fourModification of styrene acrylate emulsion with organosilicon modified styrene acrylic emulsion coating can obviously improve its weatherability, gloss, elasticity and durability. Shanghai University of Engineering Science by graft copolymerization of synthetic silicone modified styrene acrylic emulsion has the excellent properties of silicone and acrylic resin coating, good elasticity, the elongation was significantly higher than that of styrene acrylic emulsion coating. Silicone modified styrene acrylate emulsion building coating was prepared by adding a certain amount of organic silicone to styrene acrylic emulsion polymerization in Shanghai traffic science and technology university,The coating has good water resistance, scouring resistance and durability.2.5 silicone modified other resin coatingSilicone modified polyurethane coatings are widely used in Aircraft Skins, large tank surfaces, building roofs and cultural relics protection. The Chinese Academy of Sciences of Lanzhou Institute of Chemical Physics with hydroxyl terminated poly two methyl siloxane and alcohol solution of castor oil modified polyurethane prepolymer was modified, the curing rate of the blend is improved after the film adhesion, hardness, heat resistance is also improved. It also uses organosilicon modified urushiol resin as base material to prepare paint with resistance to boiling water and water vapor permeability. It can be used for corrosion protection of equipment for a long time. Shanghai Research Institute of building science by using epoxy resin, acrylic resin, silicone resin copolymer in the main chain introduced special hydrophilic functional groups made of water soluble epoxy silicone acrylic resin, the resin has excellent physical and mechanical properties, and has good resistance to aging. Anti ultraviolet and anti-corrosion properties. The coatings made of this resin are basically non-toxic, easy to construct, good in coating properties and good in decorative effect. In the research of Chenguang Chemical Research Institute, copolymerization of styrene, methyl methacrylate, acrylonitrile and organosilicon was used to develop a kind of impregnating agent for electronic devices.3 silicone rigid wear-resistant coatingStudy of organosilicon hard coating on silica sol as Q chain components, functional silicon or carbon functional silane to alkyl chain as a T component, in the presence of water, alcohol and acid catalyst by hydrolysis and polycondensation are partof TQ type silicon resin pre silicon containing hydroxyl polymer solution. By adjusting the variety of RSi (OR ') 3 and the ratio of silica sol to the additive, the variety and solvent of the additive, we can make a kind of hard and wear-resistant coating with various properties. The viscosity of organosilicon coating is usually 4~25 m, Pa, s, and the solid content is 20% ~ 30%. After coating on the surface of the substrate, the remaining silicon hydroxyl groups are condensed under heating condition to form a network structure of hardened wear-resistant layer.Silicone reinforced wear-resistant coating is superior to UV curing acrylic resin hardening coating in both wear resistance and weather resistance. Transparent plastics processed by organosilicon stiffening coatings have been widely used as glasses, car lampshades, instrument scales, compact discs and special architectural windows.4 ConclusionWith the further research, development and improvement of new materials, the performance of silicone coating will be more excellent to meet the different needs of different industries or fields. With the improvement of people's life and beautify the demands for living rooms and buildings, silicone coating with excellent weatherability and stain resistant performance in the decoration of building has a broad application prospect; and, with the increasing awareness of environmental protection silicone coatings towards non pollution, green environmental protection development direction.Refractory paint TK-000Product ingredients: refractory paint TK-000 series by silicone resin as the main raw material, the product features: high temperature of 800 DEG, acid and alkali resistance, good blackness, high hardness, good weatherability. Application: metal, iron surface coating. For example the fireplace. Through the international quality standard: SGS non-toxic inspection standard. Viscosity: 65 + 5KU/30 C color the following 2 points: black, light adjustable hardness: H-2H dry conditions: 150 DEG C * 30 'solid content: 54% + 2% adhesion: 100% (iron) leveling: good feeling: good complementary series: silicone special solvent construction method: spraying standard packing: canned note: as the climate is different, that day water should be used in different products, more details please contact the company or the dealer.According to the characteristics of low surface energy and low viscosity of organosilicon polymer itself, it is more suitable for practical application and modified in preparation process. The range of application of modified silicone resin is wider and better, which has been proved by the development trend.The above is from the coating process. Chemical industry press. ISBN7-5025-1434-1/TQ.786) part of the third chapter silicone coating: if you can borrow this book, it might be of greater help to you;Preparation of silicone resin, usually more than two or more than two units for hydrolysis, raw materials in the following article is given. When the hydrolysis conditions are different,the composition of the intermediate product and the amount of the ring formation of the hydrolysis product are often greatly different, even though the formula is the same. Effects of various factors on hydrolysis:1. Influence of pH value of hydrolysis medium(1) acid medium; (2) neutral medium; (3) alkaline medium;2. The influence of water content in hydrolysis medium: the amount of water needed for reaction is lower than that of silane reaction, which forms the gradual hydrolysis and polycondensation reaction, limiting the formation of ring. The hydrolysis of excess water is the opposite.3, the influence of the solvent in the hydrolysis medium4 、 the influence of equipment agitation speed in hydrolysis5, the influence of temperature on hydrolysis, the higher temperature when hydrolysis, the molecular movement of components is intense, the chance of collision with each other is increased, which is beneficial to the growth of CO polycondensation, low temperature,Otherwise.Formulation formulation related factors: depending on the resin type, this factor varies:(1) the average degree of substitution of alkyl hydrocarbons(D.S.); (2) the average mass of% (including SiOx, phenyl, methyl); after a lot of chemists' careful research experience, there is a data range;Modified resin: it has the advantage of two kinds of resin, and makes up for the disadvantage of silicone resin, and makes it more suitable for coating application. General organic silicone modified organic resin: alkyd resin, polyester resin, epoxy resin, acrylic resin, polyurethane resin, phenolic resin and so on;Two methods of modification: cold spelling (physical method); chemical method;。
有机硅改性聚氨酯涂料的研究与应用
聚氨酯(PU)自20世纪40年代出现以来,在涂料、弹性体、泡沫塑料及粘合剂等方面均已获得广泛应用,是一种多功能的聚合物材料,也是发展最快的高分子材料之一。
聚氨酯含有特征单元结构氨基甲酸酯键[1](-NH-CO-),链中含有交替的软链段和硬链段,使得其聚集态结构为多相结构,这决定了聚氨酯涂料优良的耐磨、柔韧等性能。
然而单一的聚氨酯涂料在耐水性、光泽、硬度等方面还不够理想,通过改性可以使其获得更加优异的综合性能。
聚氨酯的改性有两种方式:一种是通过简单的物理方法将具有互补特性的两种或多种树脂混合在一起;另一种是通过化学方法使产品具有两种或多种体系的特性。
有机硅材料具有耐高低温、耐气候老化、耐臭氧、电绝缘、耐燃、无毒、无腐蚀和生理惰性等优异性能,因而是聚氨酯改性产品的理想材料。
将有机硅用于聚氨酯的改性克服了聚氨酯材料的性能缺陷,是扩大聚氨酯应用领域的一条重要途径。
本文探讨了有机硅改性聚氨酯涂料的各种途径,并简要介绍了其应用。
1 溶剂型有机硅改性PU涂料溶剂型涂料目前在高档涂装如高级轿车、飞机蒙皮、精密仪表等领域还存在着广泛的应用。
如孙道兴、刘香兰[2]等人研究的有机硅改性聚氨酯摩托车涂料,其耐盐水、耐酸碱、柔韧性都有很大提高。
田军、薛群基[3]等研究了端羟基的聚二甲基硅氧烷与醇解蓖麻油改性聚氨酯预聚体在甲苯溶剂中的共混改性。
共聚物成膜后,分子结构中的有机硅链段更倾向于在表面聚集取向,而聚氨酯链段朝向内层,这样使得共聚物膜的附着力、硬度、固化速度等力学性能得到改善;同时,其表面呈现低的表面能,其耐热性也得到了提高。
由聚氨酯预聚体、氨基硅烷或硅氧烷、聚有机硅氧烷增粘剂、含氢硅氧烷、有机溶剂等组成的涂料在氯铂酸催化下,(150~200)℃固化成膜,固化后的涂膜光滑、耐热、耐磨,对未经任何表面处理的硅橡胶有良好的粘接性[4]。
采用侧链含有多氨基官能团的硅油在溶剂中改性聚氨酯,这种硅氧烷在聚氨酯的合成过程中,侧链参加反应,硅氧烷链悬挂在聚氨酯的主链上,有利于硅原子向表面迁移,只需加入少量的氨基硅油就能改善聚氨酯的表面性质[5,6]。
有机硅的应用与研究进展
有机硅的应用与研究进展享有“工业味精”、“科技发展催化剂”等美誉的有机硅是一种人工合成、结构上以硅原子和氧原子为主链的高聚物。
由于构成主链的硅氧键具有较高的键能,因此有机硅高聚物对热、氧的稳定性比一般的有机高聚物高得多。
尽管有机硅在室温下的力学性能与其它材料差异不大,但其在高低温下表现出卓越的物理、力学性能,在-60~250℃之间多次交变,其性能不受影响,有的甚至能在-100℃下正常使用;具有耐高低温、电气绝缘、耐臭氧、耐辐射、难燃、憎水、耐腐蚀、无毒无味以及生理惰性等。
如今,有机硅已广泛用于电子电气、建筑、纺织、轻工、医疗等各行业,并在汽车行业有着广泛的应用[1]。
有机硅产业链的上游是有机硅单体,具有生产流程长、技术难度大的特点,属技术密集型、资本密集型产业,其生产水平和装置规模是衡量一个国家有机硅产业技术水平的重要依据;有机硅产业链的下游是以有机硅单体为原料生产的硅油、硅橡胶、硅树脂、硅烷偶联剂等产品[2]。
有机硅不仅可以作为母体材料运用到生产生活中,还更常用作改性剂添加到主体材料中,从而改善主体材料的性能,如耐高温性,防水防污性,抑菌性,阻燃性,柔性等方面。
同时,在添加有机硅的同时,还要改进生产工艺方法及注意添加用量,以确保其发挥出最大作用。
在耐高温的研究应用方面,有机硅耐高温涂料一般由纯有机硅树脂或经过改性后的有机硅树脂为基料配以无机耐高温的填料、溶剂和助剂组成。
国外已有大量的研究成果,尤以美国、日本的发展为佳[3]。
某些设备如汽车的排气管、石化工厂中的高温反应釜、火电厂锅炉等经常处于高温和腐蚀介质中,两者协同作用加速了设备的腐蚀穿孔,增加了设备维修费用,并给安全生产带来很大隐患[4]。
刘宏宇等人以硅树脂为耐高温涂料的成膜物,研制了一种可常温固化的耐高温防腐蚀涂料。
该涂料具有良好的耐高温性,防腐蚀性及机械性能,可在500℃高温下长期使用。
同时发现漆膜厚度对涂料的耐热性能影响较小,但对加热后涂层的机械性能及防腐性能影响很大。
有机硅改性聚酯树脂的研究进展
有机硅改性聚酯树脂的研究进展王旭波,赵士贵*,杨欣欣,王 峰,东 青(山东大学材料科学与工程学院,济南250061)摘要:综述了近年来国内外有机硅改性聚酯树脂的研究进展。
介绍了物理共混法和化学共聚法制备的有机硅改性聚酯树脂的特点、应用情况。
展望了有机硅改性聚酯树脂的发展前景。
关键词:有机硅,聚酯树脂,改性中图分类号:T Q264 1+7 文献标识码:A文章编号:1009-4369(2006)05-0264-04收稿日期:2006-03-20。
作者简介:王旭波(1981 ),男,硕士生,主要从事有机硅产品和工艺的研究。
*联系人:E-mail:w angxubo@mail sdu edu cn 。
有机硅是分子主链中含硅元素的有机高分子合成材料,主要分为硅橡胶、硅油、硅树脂及硅烷偶联剂4大类产品。
目前,有机硅应用于涂料等工业的产品多为硅树脂,它以Si O Si 为主链,与硅原子相连的是各种有机基团。
这一类化合物是属于半无机、半有机结构的高分子化合物,兼具无机材料与有机材料的性能,其介电性能在较大的温度、湿度、频率范围内保持稳定,还具有优良的耐氧化、耐化学品、电绝缘、耐辐射、耐候、憎水、阻燃、耐盐雾、防霉菌等特性[1];广泛用于电子电气、轻工纺织、建筑、医疗等行业。
但硅树脂固化温度较高(250~300 )、固化时间较长,漆膜的机械性能、附着力和耐有机溶剂性能较差。
在现代工业中,聚酯树脂是制造聚酯纤维、涂料、薄膜以及工程塑料的原料,通常由二元酸和二元醇经酯化和缩聚反应制得。
这类聚合物的一个共同特点是其大分子的各个链节间都是以酯基相连,通称为聚酯[2]。
聚酯具有光亮、丰满、硬度高、物理机械性能良好以及耐化学腐蚀性能较好等优点;但存在耐水性差、施工性能不好等缺陷。
用有机硅对聚酯树脂进行改性,使两种聚合物材料的优势得到互补,可以大大提高树脂的性能,扩展其使用范围[3]。
近几年来,有机硅改性聚酯树脂在国外的研究较多,但在国内的研究却较少,发展十分缓慢。
有机硅改性丙烯酸建筑涂料的制备及性能研究
有机硅改性丙烯酸建筑涂料的制备及性能研究摘要:有机硅改性丙烯酸(又称硅丙树脂)是丙烯酸酯的一种大型分子,其主要反应和侧链为硅烷或聚硅氧烷。
介绍了制备有机硅丙烯酸外墙涂料的制备方法,并测试了耐久性、环境适应性、耐洗刷,其是高档建筑外墙涂料。
关键词:有机聚硅氧烷;丙烯酸涂料;建筑涂料目前,住宅建筑的外涂料比丙烯酸树脂使用效果好,保色鲜艳,经久耐用,附着牢固,常温自干。
但是,由于丙烯酸树脂涂层是作为膜材料制造的,丙烯酸树脂本身的热塑性有限,没有线性分子的交联点,因此很难产生三交联膜和相对较低的耐热性。
达到室外温度时,返粘会在高温下出现。
低温下,膜由于缺乏弹性而易开裂。
一、试验部分硅丙涂料,比普通苯丙、纯丙以及醋丙涂料耐候性,温度低,耐沾污。
一般来说,普通丙烯酸树脂使用寿命约为5-8年。
建筑物外墙的颜色寿命要求约为10年,高和超高层的涂料寿命超过15年。
其后果是丙烯酸涂料在使用寿命期间不符合建筑外墙的要求,而硅丙则为15-20年,这是这个最明显的优点之一。
同时,硅丙与氟碳涂料差不多,但硅丙涂料在附着、污染和方面具有更明显的优势。
这是因为硅丙涂料有很多优点,近年来的快速发展逐渐成为建筑外墙的首选涂料之一。
1.合成丙烯酸的有机硅改性机理。
其包括碳、氢和其他有机物质以及硅、氧和有机物质。
它的分子结构几乎是硅酸盐,是典型的半无机聚合物,对于具有(见表1)Si—O、Si—C、Si—O键的有机硅分子443.5kJ/mol表1键能(KJ/mol)数据表1.试验配方原料及涂料。
硅丙树脂、钛白粉、硫酸钡、滑石粉、轻质碳酸钙、邻苯二甲酸二丁酯、增稠防沉剂、稀料分别为80~100、15~100、10~70、10~70、10~70、3.5~7.5、0.6~3份、适量。
3.制备。
加入一定量硅丙、颜填料、助剂等。
在配料容器中,以高速分散30分钟的速度分散,砂磨机打开,研磨制作大约50μm。
在油漆容器中添加硅丙树脂和稀料。
完全混合后,慢慢加入硅丙树脂、钛白粉、填料,使完全混合,然后慢慢加入其他色浆,调整色泽。
有机硅低表面能防污涂料控制因素与研究进展
有机硅低表面能防污涂料控制因素与研究进展潘 莹1,张三平1,周建龙2,李晓刚2,萧以德1(1.武汉材料保护研究所,武汉430030;2.北京科技大学,北京100083) 摘 要:简述了海洋生物的污损原理,介绍了有机硅低表面能防污涂料的主要特性,分析了影响其防污性能的主要因素,概述了该涂料的研究进展及试验研究方法,指出低表面能防污涂料是未来发展的重点,进一步改进和发展有机硅低表面能防污涂料具有很大的空间。
关键词:有机硅;低表面能;防污涂料;试验中图分类号:T Q 637 文献标识码:A 文章编号:0253-4312(2009)12-0058-04Con trolli n g Factors and Progress of L owSurface Energy S ili cone An ti fouli n g Coa ti n gsPan Ying 1,Zhang Sanp ing 1,Zhou J ianl ong 2,L i Xiaogang 2,Xiao Yide1(1.W uhan Research Institute of M aterials Protection,W uhan 430030,China;2.U niversity of Science and Technology B eijing,B eijing 100083,China ) Abstract:This article has described the fouling mechanis m by marine bi ol ogy and the main features,contr olling fact ors and p r ogress of l ow surface energy silicone antifouling coatings .The test methods t o study these coatings have als o been summarized .It is pointed out that the devel opment of l ow surface energy anti 2fouling coatings is the devel opment target of future antif ouling coatings and there is still r oom f or further i m 2p r ove ment and devel opment of these coatings . Key W ords:silicone;l ow surface energy;antifouling coatings;test作者简介:潘莹(1974—),女,工程师,从事腐蚀与防护研究工作。
2024年有机硅涂料市场规模分析
2024年有机硅涂料市场规模分析简介有机硅涂料是一种以有机硅聚合物为基础,通过添加剂和溶剂调制而成的一种特殊涂料。
该涂料具有优异的耐候性、耐酸碱性和耐高温性,因此在建筑、汽车、机械等行业中得到广泛应用。
本文将对有机硅涂料市场规模进行分析。
市场概述国内市场有机硅涂料市场在中国迅速崛起,并呈现出快速增长的趋势。
这主要归功于建筑、汽车和机械等行业对高性能涂料的需求增加。
随着环保意识的提高和相关政策的推动,有机硅涂料市场的需求进一步增长。
根据市场研究数据,预计2025年中国有机硅涂料市场规模将达到XX亿美元。
国际市场国际有机硅涂料市场也持续增长。
北美和欧洲是全球有机硅涂料市场的主要消费地区,其中美国和德国是两个最大的市场。
随着亚太地区的工业化进程加快,亚太地区的有机硅涂料市场也呈现出较快的增长速度。
预计到2025年,全球有机硅涂料市场规模将超过XX亿美元。
市场驱动因素建筑行业需求增加建筑行业是有机硅涂料市场的主要驱动因素之一。
随着城市化进程的加快和人们对建筑质量要求的提高,有机硅涂料在建筑行业中广泛应用。
这种涂料能够提供优异的耐候性和耐化学性,同时还能防止建筑物表面的污染和腐蚀。
因此,建筑行业对有机硅涂料的需求在逐年增加。
汽车和机械行业需求增长汽车和机械行业也是有机硅涂料市场的重要推动力。
有机硅涂料可以用于汽车外观涂装、防腐蚀涂装以及机械零部件的防护。
随着汽车和机械行业的快速发展,对高性能涂料的需求增加,推动了有机硅涂料市场的增长。
市场挑战与机遇环保压力增大随着全球环保意识的提高,对环境友好型涂料的需求增加。
有机硅涂料作为一种高性能涂料,虽然具有较低的VOC排放,但仍然需要进一步改进以符合环保要求。
因此,开发更环保的有机硅涂料是市场的重要机遇。
制造成本上升有机硅涂料的制造成本相对较高,这限制了其市场的进一步扩大。
随着原材料及生产成本的上升,有机硅涂料制造商需要通过技术创新和成本优化来降低成本,提高市场竞争力。
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封端的聚二甲基硅氧烷,在偶氮二异丁腈的作用 下,与甲基丙烯酸(酯)类单体进行溶液共聚, 得到硅橡胶改性丙烯酸树脂,该树脂具有很好的
[ ] # ) 耐热性 。
! " ! 有机硅改性丙烯酸树脂涂料 有机硅改性丙烯酸树脂涂料具有优良的耐候 性、保光保色性,不易粉化,光泽好;大量用于 金属板材的预涂装、机器设备的涂装及建筑物内 外墙的耐候装饰与装修。有机硅改性丙烯酸树脂 有溶剂型和乳液型两类,其中硅丙乳胶涂料具有 优良的耐候性、耐沾污性、耐化学药品性能,是 一种环保型绿色涂料。湖北大学采用水溶性自由 基引发剂,以含氢硅油与丙烯酸丁酯为原料,通 万方数据 过乳液聚合方法合成了性能优异的有机硅 / 丙烯
有机硅涂料研究进展
孙争光 朱杰 黄世强
(湖北大学化学与材料科学学院,武汉 ! ) " # # $ %
摘要:综述了有机硅树脂涂料及有机硅改性醇酸树脂、丙烯酸树脂、环氧树脂、苯丙乳液、聚氨酯等 涂料的研究与应用进展,指出了有机硅涂料的发展趋势。 关键词:有机硅,涂料,硅树脂
有机硅是第一个获得广泛应用的元素有机高 分子化合物,因其独特的化学结构而具有优异的 性能,广泛应用于国民经济的各个领域,在涂料 工业中亦占有相当重要的地位。有机硅涂料是以 有机硅聚合物或有机硅改性聚合物为主要成膜物 质的涂料,它具有优良的耐热耐寒、电绝缘、耐 电晕、耐辐射、耐潮湿和憎水、耐候、耐沾污及 耐化学腐蚀等性能,近年来在产品性能改进及应 用方面都得到了迅速发展。
+ , . + / " " 为主要原料,以丙酮和二甲苯为溶剂, 合成了摩尔质量分布窄的可溶性梯形聚甲基硅树 脂,采用该树脂与一定量的铝粉、室温硫化硅橡 胶 配 制 成 的 高 温 防 腐 涂 料, 经 % ’ # 0老化 ,其柔韧性、耐油性和耐腐蚀性等均良 (# # #9
[ ] ! 好 。合肥工业大学用四官能团的硅酸酯与三
[ ] " 膜电 阻 器 的 阻 燃 涂 料 。中 科 院 化 学 所 以
( 硅树脂涂料
以有机硅树脂为成膜物质制成的涂料主要有 耐热耐候有机硅防腐涂料、耐搔抓的透明有机硅 涂料、脱模和防潮涂料及耐辐射涂料等品种。 涂料 用 有 机 硅 树 脂 一 般 以 甲 基 三 氯 硅 烷 (+ 、二甲基二氯硅烷[(+ 、 , . + / , . + / " ") ") % %] 苯基 三 氯 硅 烷(+ 、二 苯 基 二 氯 硅 烷 , . + / $ ’ ") [(+ , . + / $ ’) % %] 及 甲 基 苯 基 二 氯 硅 烷 [+ 等为原料进行水解缩聚而制 , + , . + / "( $ ’) %] 得。单体结构、官能团数目与比例对涂层性能的 影响很大。硅原子上连接的有机基团种类对树脂 的性能也有影响,不同的有机基团可使有机硅树 脂表现出不同的性能。例如,当有机基团为甲基 时,可赋予有机硅树脂热稳定性、脱模性、憎水 性、耐电弧性;为苯基时,赋予有机硅树脂氧化 稳定性,在一定范围内可破坏高聚物的结晶性; 为乙烯基时,可改善有机硅树脂的固化特性,并 带来偶联性;为苯基乙基时,可改善有机硅树脂 与有机物的共混性。在硅氧烷主链引入丁基,可 万方数据 增加其与醇酸树脂、聚酯树脂等的相容性;引入
化工艺,采用活性硅油与丙烯酸酯类单体进行乳 液共聚,得到有机硅改性丙烯酸乳液,用该乳液
[ ] # # 配制的涂料涂层耐沾污性好,综合性能优异 。
复旦大学采用含乙烯基官能团的有机硅单体与甲 基丙烯酸酯、丙烯酸酯、丙烯酸羟基酯等单体通 过种子乳液聚合,得到了稳定的性能优异的有机
[ ] # ! 硅改性丙烯酸酯乳液 。浙江大学采用有机硅
・! !・
有
机
硅
材
料
第# +卷
固化时间长,大面积施工不方便;对基材的附着 力差,耐有机溶剂性差,温度较高时漆膜的机械 强度不好,价格较贵等。为克服这些缺点,常用 有机硅树脂对有机树脂进行改性。改性有机硅树 脂通常兼具两种树脂的优点,可弥补两种树脂在 性能上的某些不足,从而提高性能、拓展应用领 域。改性方法有物理共混和化学改性两种,化学 改性的效果一般比物理共混改性好。化学改性主 要是在聚硅氧烷链的末端或侧链上引入活性基 团,再与其它高分子反应生成嵌段、接枝或互穿 网络共聚物,从而获得新的性能。在涂料工业 中,用有机硅改性的有机树脂主要有醇酸树脂、 丙烯酸树脂、环氧树脂等。 ! " # 有机硅改性醇酸树脂涂料 有机硅改性醇酸树脂涂料既保留有醇酸树脂 漆室温固化和涂膜物理、机械性能好的优点,又 具有有机硅树脂耐热、耐紫外线老化及耐水性好 的特点,是一种综合性能优良的涂料。最早的改 性方法是将有机硅树脂直接加到反应达到终点的 醇酸树脂反应釜中即可;通过这样简单的混合, 醇酸树脂的室外耐候性大大改进。另一种改性方 法是制备反应性的有机硅低聚物,用以和醇酸树 脂上的自由羟基进行反应;也可将有机硅低聚物 作为多元醇与醇酸树脂进行共缩聚。通过化学反 应改性的醇酸树脂耐候性更好。湖南大学用醇解 法制成的羟基封端醇酸预聚体与以水解法或异官 能团法制成的有机硅预聚体进行缩聚反应合成出 ($%&) ! 型结构的有机硅 % 醇酸 嵌 段 共 聚 物, 并以该嵌段共聚物为基料制成清漆;该清漆综合 性能优良,既具有醇酸树脂清漆的室温固化、漆 膜柔韧性、冲击强度和附着力好的优点,又大大 提高了耐热、耐大气老化和抗水介质腐蚀等性
! " . 有机硅改性环氧树脂涂料 用有机硅对环氧树脂进行改性,既可降低环 氧树脂内应力,又能增加环氧树脂韧性、提高其 耐热性。中科院化学所用聚二甲基硅氧烷改性邻 甲酚酚醛环氧树脂,使其内应力大幅度降低,抗
[ ] # , 开裂指数大为提高 。武汉材料保护研究所采
用环氧树脂与混容性好的反应性有机硅低聚物缩 聚,所制得的有机硅改性环氧树脂兼具环氧树脂 和有机硅树脂的优点,不仅提高了耐热性,而且
单体对丙烯酸树脂进行改性,制得硅丙乳胶涂
[ ] # . 料 。重庆大学合成了聚有机硅氧烷 % 聚丙烯
酸酯互穿网络涂料,该涂料具有无色透明、硬度 高、附着力强、耐酸沉降、耐热老化性及透水性
[ ] # + 好等优点,可用作摩岩石刻防风化材料 。
上海市建筑科学研究院开发的有机硅丙烯酸 树脂适合于配制耐候性达 # / 年以上的高耐候性
官能团的烷基硅氧烷,通过严格控制共水解反 应,制得兼有硅酸盐和有机硅聚合物特性的基 料,该基料与颜填料及其它辅助材料按一定比例
[ ] ’ 配合可制成有机硅耐热涂料 。
% 改性有机硅树脂涂料
尽管有机硅树脂具有许多优异性能,但也存 在一些问题:一般需高温( ( ’ # ! % # # 0)固化,
收稿日期: 。 % # # # & # ! & # ’ 作者简介:孙争光( ,男,工学硕士,主要从事有 ( ) * ! &) 机硅材料的研究与开发。
[ ] # / 涂料 。合肥工业大学用正硅酸乙酯部分水解
缩聚而得的聚硅氧烷与带羟基的丙烯酸树脂反应 制得有机硅接枝改性丙烯酸树脂;该树脂在耐酸 碱、耐盐、耐溶剂性能及冲击强度等方面较纯聚 硅氧烷有明显改善,且在耐高温性方面较丙烯酸
[ ] # ’ 树脂明显提高 。江苏省建筑材料研究设计院
在丙烯酸树脂的合成中引入一定量的有机硅官能 团,制得了溶剂型高耐候性有机硅改性丙烯酸树
[ ] ’ 能 。
酸酯乳液;该乳液具有很好的耐酸碱、耐高低温 及耐电解质稳定性,用其配成的涂料具有很好的
[ , ] ( ) 耐候性和耐沾污性能 。济南化工研究所以丙
烯酸酯类单体、* 和乙烯基七甲基环四硅氧烷 + 为原料,通过加入一定量的接枝剂,采用一次投 料法合成了稳定的聚丙烯酸酯%聚硅氧烷复合乳
[ , ] , # 液 。四川省建材工业科学研究院通过预乳
亚苯基、二苯醚亚基、联苯亚基等芳亚基及硅碳 硼高聚物时,耐辐射性强、耐温可达 " # #!’ # # 0;主链结构为. &1 键的有机硅高聚物,其热 稳定性在! # #0以上。在实际应用中,可根据需 要选用不同的有机硅单体,在有机硅树脂中引入
[ ] ( ! % 不同的有机基团 。
晨光化工研究院采用粘度为 % ・ #!! #2 3 4 5 的羟基硅油、 (+ ) 及甲基三乙氧基硅烷 , . + / "% % 为 原 料, 控 制 !6 / 等 于 ( , ! 7 "!( 7 ! . (+ ) 与羟基硅油的质量比为 * ,并 , . + / # 8 " # "% % 采用滴加水的方式于’ ,得到具有 #0共水解(9 良好硬度和弹性的甲基硅树脂,可用于制备金属
第 $期
[ ] ! " 具有良好的防腐性 。
孙争光等9有机硅涂料研究进展
・! (・
机硅增硬涂料处理的透明塑料已广泛用作眼镜 片、汽车车前灯罩、仪表刻度板、光盘及特殊建 筑用窗玻璃等。
! # $ 有机硅改性苯丙乳液涂料 用有机硅乳液对苯丙乳液进行改性,可明显 提高其耐候性、保光性、弹性和耐久性等。上海 工程技术大学采用接枝共聚反应合成的有机硅改 性苯丙乳液兼具有机硅和丙烯酸树脂的优良性 能,涂膜弹性好,其断裂伸长率明显高于苯丙乳
[ ] ! % 液涂膜 。上海交通科技大学在苯乙烯 & 丙烯
$ 结语
随着新材料的深入研究、开发和改进,有机 硅涂料的性能亦将更加优异,以满足不同行业或 领域的不同需求。随着人们生活水平的改善和对 居室及建筑物美化要求的提高,有机硅涂料以其 优异的耐候性和耐沾污性能在建筑物的装饰装修 方面有着广阔的应用前景;并且,随着人们环保 意识的增强,有机硅涂料将朝着无污染、绿色环 保型方向发展。 参 考 文 献
[ ] ! ( 附着力、硬度、耐热性也得到提高 。该所还