摘要
利用热重分析仪对EPS、XPS和PIR-PU等3种典型聚合物基建筑外保温材料的热降解行为进行研究,采用kissinger和Flynn-Wall-Ozawa方法分别计算了3者的热降解活化能。结果表明,EPS和XPS均需要在较高温度下发生热降解,而PIR-PU更易发生热降解,其初始热降解温度和最大热降解温度均明显低于EPS和XPS;EPS和XPS的热降解活化能基本相同,且明显大于PIR-PU的热降解活化能。
The thermal degradation behavior of expanded poly- styrene foam （EPS）, extruded polystyrene foam （XPS） and polyisocyanurate polyurethane foam tPIR--PU） are studied by thermogravimetric analysis, and thermal degradation kinetic of the materials is investigated by Kissinger method and Flynn-- Wall--Ozawa method. The results indicate that the thermal degradation of EPS and XPS occur at high temperature, and the initial degradation temperature and maximum thermal degradation rate temperature of PIR--PU are lower than that of EPS and XP; the values of thermal degradation activation energy of EPS and XPS are nearly the same, which are higher than that of PIR-- PU obviously.
出处
《消防科学与技术》
CAS
北大核心
2014年第1期1-4,共4页
Fire Science and Technology
基金
国家重大基础研究计划(973计划)项目(2012CB719701)
中国博士后科学基金项目(2012M520565)
关键词
聚合物
保温材料
热重分析
热降解动力学
polymer
thermal insulation material
thermogravi metric analysis
thermal degradation kinetic
