人造板材甲醛释放参数及温度的影响-中南大学学报
相关主题
- 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)。
3 were obtained using the 1 m small chamber at different temperatures. The key parameters, i.e. the initial mobile mass
concentration ρm,0, the diffusion coefficient Dm and the partition coefficient K were calculated by using the emission process and equilibrium concentration in the closed environment chamber at a series of loading degrees and temperatures, and the correlations between emission parameters and temperature were calculated. The results show that quick emission of formaldehyde occurs initially (0−3 h), and tends to decrease over time. Higher temperatures facilitate formaldehyde emission from woodbased panels, and total emissions increase 10%−30% with temperature increase of 5 ℃. The simulated results are in accord with those of experiment, which proves that the emission parameters obtained are accurate and reliable. Key words: formቤተ መጻሕፍቲ ባይዱldehyde; woodbased panel; emission parameters; closed environment chamber
收稿日期:2014−02−20;修回日期:2014−04−22
系数 K 是影响板材甲醛散发的关键参数,而温度又是 影响这 3 个释放参数的主要环境因素[1−3] ,因此,需 讨论温度与释放参数间的关系。求解甲醛释放参数的 方法包括两大类:1) 从各个参数实际意义出发,通过
[4] 设计相应的实验进行测试计算,如流化床脱附法
基金项目 (Foundation item) : APEC 科技产业合作基金资助项目 (313001022) ;国家自然科学基金资助项目 (20976200) ;长沙市重点科技项目 (2010XK4002)(Project (313001022) supported by Cooperation Fund of APEC Science and Technology Industry; Project (20976200) supported by the National Natural Science Foundation of China; Project (2010XK4002) supported by Changsha Municipal Key Project of Science and Technology) 通信作者:李立清,男,博士,从事空气污染控制研究;Email:liqingli@hotmail.com
Formaldehyde emission parameters of woodbased panels and influence of temperature
CHI Dong, LI Liqing, LIU Zheng, MA Weiwu, YAO Xiaolong
(School of Energy Science and Engineering, Central South University, Changsha 410083, China) Abstract: The measurements of formaldehyde emission from plywood, density board, laminate flooring and block board
人造板材甲醛释放参数及温度的影响
池东,李立清,刘峥,马卫武,姚小龙 (中南大学 能源科学与工程学院,湖南 长沙,410083)
3 摘要:采用 1 m 的小型环境模拟舱,测试不同温度下胶合板、密度板、复合地板和细木工板中甲醛释放规律。利
用不同温度下板材在密闭环境舱散发过程和平衡状态质量浓度,求解影响板材释放特性的关键释放参数即甲醛可 散发初始质量浓度 ρm,0、扩散系数 Dm 和分配系数 K;讨论释放参数与温度的关系,并推导计算关联式。研究结果 表明:甲醛质量浓度在初始时刻(0~3 h)均迅速增大,随后速度慢慢减小,最后趋于恒定值;温度升高会促进板材 内甲醛释放,温度每升高 5 ℃,甲醛释放量会增加 10%~30%;通过预测 30 ℃下 4 种板材的甲醛释放参数,预测 结果与实验测试结果较吻合。 关键词:甲醛;人造板;释放参数;密闭环境舱 中图分类号:TS67 文献标志码:A 文章编号:1672−7207(2015)02−0751−08
第 46 卷第 2 期 2015 年 2 月
中南大学学报(自然科学版) Journal of Central South University (Science and Technology)
Vol.46 No.2 Feb. 2015
DOI: 10.11817/j.issn.16727207.2015.02.051
室内挥发性有机物(volatile organic compounds, VOC)质量浓度过高是导致病态建筑综合症的重要原 因,大量被用于装修的建材、装饰材料都存在 VOC 散发问题,室内 VOC 气体中又以甲醛最普遍。板材 中甲醛可散发初始质量浓度 ρm,0、 扩散系数 Dm 和分配
concentration ρm,0, the diffusion coefficient Dm and the partition coefficient K were calculated by using the emission process and equilibrium concentration in the closed environment chamber at a series of loading degrees and temperatures, and the correlations between emission parameters and temperature were calculated. The results show that quick emission of formaldehyde occurs initially (0−3 h), and tends to decrease over time. Higher temperatures facilitate formaldehyde emission from woodbased panels, and total emissions increase 10%−30% with temperature increase of 5 ℃. The simulated results are in accord with those of experiment, which proves that the emission parameters obtained are accurate and reliable. Key words: formቤተ መጻሕፍቲ ባይዱldehyde; woodbased panel; emission parameters; closed environment chamber
收稿日期:2014−02−20;修回日期:2014−04−22
系数 K 是影响板材甲醛散发的关键参数,而温度又是 影响这 3 个释放参数的主要环境因素[1−3] ,因此,需 讨论温度与释放参数间的关系。求解甲醛释放参数的 方法包括两大类:1) 从各个参数实际意义出发,通过
[4] 设计相应的实验进行测试计算,如流化床脱附法
基金项目 (Foundation item) : APEC 科技产业合作基金资助项目 (313001022) ;国家自然科学基金资助项目 (20976200) ;长沙市重点科技项目 (2010XK4002)(Project (313001022) supported by Cooperation Fund of APEC Science and Technology Industry; Project (20976200) supported by the National Natural Science Foundation of China; Project (2010XK4002) supported by Changsha Municipal Key Project of Science and Technology) 通信作者:李立清,男,博士,从事空气污染控制研究;Email:liqingli@hotmail.com
Formaldehyde emission parameters of woodbased panels and influence of temperature
CHI Dong, LI Liqing, LIU Zheng, MA Weiwu, YAO Xiaolong
(School of Energy Science and Engineering, Central South University, Changsha 410083, China) Abstract: The measurements of formaldehyde emission from plywood, density board, laminate flooring and block board
人造板材甲醛释放参数及温度的影响
池东,李立清,刘峥,马卫武,姚小龙 (中南大学 能源科学与工程学院,湖南 长沙,410083)
3 摘要:采用 1 m 的小型环境模拟舱,测试不同温度下胶合板、密度板、复合地板和细木工板中甲醛释放规律。利
用不同温度下板材在密闭环境舱散发过程和平衡状态质量浓度,求解影响板材释放特性的关键释放参数即甲醛可 散发初始质量浓度 ρm,0、扩散系数 Dm 和分配系数 K;讨论释放参数与温度的关系,并推导计算关联式。研究结果 表明:甲醛质量浓度在初始时刻(0~3 h)均迅速增大,随后速度慢慢减小,最后趋于恒定值;温度升高会促进板材 内甲醛释放,温度每升高 5 ℃,甲醛释放量会增加 10%~30%;通过预测 30 ℃下 4 种板材的甲醛释放参数,预测 结果与实验测试结果较吻合。 关键词:甲醛;人造板;释放参数;密闭环境舱 中图分类号:TS67 文献标志码:A 文章编号:1672−7207(2015)02−0751−08
第 46 卷第 2 期 2015 年 2 月
中南大学学报(自然科学版) Journal of Central South University (Science and Technology)
Vol.46 No.2 Feb. 2015
DOI: 10.11817/j.issn.16727207.2015.02.051
室内挥发性有机物(volatile organic compounds, VOC)质量浓度过高是导致病态建筑综合症的重要原 因,大量被用于装修的建材、装饰材料都存在 VOC 散发问题,室内 VOC 气体中又以甲醛最普遍。板材 中甲醛可散发初始质量浓度 ρm,0、 扩散系数 Dm 和分配