氯磺化聚乙烯在不同气氛中的热降解行为  

Effect of Atmosphere on Thermal Degradation of Chlorosulfonated Polyethylene

作　　者：韩丞[1] 常虹[1] 隋秀鹏[1] 高洪成[1] 王哲[1] 张明耀[1] 

机构地区：[1]长春工业大学合成树脂与特种纤维工程研究中心,吉林长春130012

出　　处：《高分子材料科学与工程》2011年第12期60-63,共4页Polymer Materials Science & Engineering

基　　金：吉林省科技厅项目(20086034-2);吉林省教育厅项目(2009108)

摘　　要：利用热重分析仪(TGA)研究了氯磺化聚乙烯(CSM)在氮气和空气中的热降解行为,探讨了气氛对CSM热降解的影响。研究表明,CSM的热分解过程分为两个失重平台,随着升温速率的升高,聚合物的分解温度逐渐升高。分别用Kissinger和Flynn-Wal-lOzawa方法对CSM中第一个失重平台(磺酰氯基团)的降解行为进行了研究,得到其活化能E、指前因子A、反应级数n、相关系数r。发现在同种气氛条件下,Flynn-Wal-lOzawa方法所得的活化能比Kissinger方法求出的活化能略高,在空气气氛中求得的活化能要低于氮气气氛中的活化能。The thermal degradation behaviors of chlorosulfonated polyethylene in nitrogen and in air have been studied by thermogravimetry analysis（TGA） and digital thermogravimetry（DTG）.The effect of atmosphere on the thermal degradation behaviors of chlorosulfonated polyethylene was discussed.The results show that the thermal degradation of chlorosulfonated polyethylene in air is a two stage reaction.With the increase of heating rate（β）,the temperature of degradation is rising gradually.The activation energy E,pre-exponential factor A,reaction order n and correlation coefficient r of chlorosulfonated polyethylene（CSM） can be calculated by taking the advantage of the methods of Kissinger and Flynn-Wall-Ozawa to research the degradation of the first stage.The activation energy E by Ozawa method is slightly higher than that by Kissinger method in the same ambiance.But activation energy E in air is lower than that in nitrogen.

关 键 词：氯磺化聚乙烯 热重分析 降解动力学 KISSINGER Flynn-Wal-lOzawa 

分 类 号：O631.31[理学—高分子化学]