摘要
综述了聚硅氧烷热老化机理和提高热稳定性的途径。聚硅氧烷的老化机理主要来源于热解聚和热氧化降解过程。提高聚硅氧烷耐热性的途径主要是改变端基、主链的分子结构,也可以在聚硅氧烷体系中添加耐热添加剂。
The thermal aging mechanism of polysiloxanes and methods applicable for improving their thermal stabil- ities were reviewed. The thermal aging conduct was resulted from thermal depolymerization and thermo-oxidative degrada- tion process. The thermal stabilities of polysiloxanes could be enhanced either by structure modification initiated from vari- ation of terminal group for polymer molecule and the molecule structure of main chain, or by the addition of some kinds of heat-resistant additives.
出处
《化工新型材料》
CAS
CSCD
北大核心
2010年第1期17-19,43,共4页
New Chemical Materials
基金
教育部2008年重点科研项目(208183)
浙江省自然科学基金项目(Y4080264)资助
关键词
聚硅氧烷
热稳定性
热解聚
热氧化降解
polysiloxane, thermal stability, thermal depolymerization, thermo-oxidative degradation
