摘要
用热重法（ＴＧＡ）研究了聚（甲基环己基硅烷）、甲基环己基硅烷与甲基苯乙基硅烷共聚物和聚（甲基苯乙基硅烷）的热分解动力学，计算了热分解动力学参数。结果表明，其热分解活化能分别为２０８ｋＪ／ｍｏｌ、１８７ｋＪ／ｍｏｌ和１４ｋＪ／ｍｏｌ；这３者的热分解均符合无规引发裂解模型。
The kinetics of thermal degradation of poly (methylcyclohexylsilane) (PMCS), poly(methylcyclohexylsilane-co-methylphenethylsilane) (copolymer) and poly (methylphenethylsilane )(PMPES) was studied by dynamic thermogravimetry.The results cacld. from the kinetic models based on random initiation followed by rapid dispropornation and termination were in good agreement with the experimental data.The overall activation energy for degradation of PMCS,copolymer and PMPES was found to be 208 kJ/mol,187 kJ/mol and 114 kJ/mol, respectively.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1994年第2期82-86,共5页
Polymer Materials Science & Engineering
基金
国家自然科学基金
关键词
聚硅烷
热分解
动力学
s: polysilane
thermal degradation
kinetics
thermogravimetry.
