化工新型材料
化工新型材料
화공신형재료
NEW CHEMICAL MATERIALS
2010年
1期
17-19,43
,共4页
金晶%徐晓秋%杨雄发%蒋剑雄%伍川
金晶%徐曉鞦%楊雄髮%蔣劍雄%伍川
금정%서효추%양웅발%장검웅%오천
聚硅氧烷%热稳定性%热解聚%热氧化降解
聚硅氧烷%熱穩定性%熱解聚%熱氧化降解
취규양완%열은정성%열해취%열양화강해
polysiloxane%thermal stability%thermal depolymerization%thermo-oxidative degradation
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.
綜述瞭聚硅氧烷熱老化機理和提高熱穩定性的途徑.聚硅氧烷的老化機理主要來源于熱解聚和熱氧化降解過程.提高聚硅氧烷耐熱性的途徑主要是改變耑基、主鏈的分子結構,也可以在聚硅氧烷體繫中添加耐熱添加劑.
종술료취규양완열노화궤리화제고열은정성적도경.취규양완적노화궤리주요래원우열해취화열양화강해과정.제고취규양완내열성적도경주요시개변단기、주련적분자결구,야가이재취규양완체계중첨가내열첨가제.
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.
