苯并噁嗪/不完全笼型倍半硅氧烷复合材料的固化动力学研究  

Study on the Curing Kinetics of Benzoxazine/T_7POSS Composites

作　　者：单家佳[1] 程晓君[1] 吴一弦[1] 徐日炜[1] 余鼎声[1] 

机构地区：[1]北京市新型高分子材料制备与加工重点实验室北京化工大学,北京100029

出　　处：《合成材料老化与应用》2008年第3期11-15,共5页Synthetic Materials Aging and Application

基　　金：国家自然科学基金(50473041)支持项目

摘　　要：采用非等温差示扫描量热法(DSC)比较了苯并噁嗪和苯并噁嗪/不完全笼型苯基三羟基七聚倍半硅氧烷(T7POSS)复合材料两种体系的固化特性。Kissinger和Ozawa方程计算了两体系的固化反应表观活化能、反应级数,并建立了固化动力学方程。结果表明T7POSS上的弱酸性官能团Si-OH对苯并噁嗪的固化反应具有催化作用,两种体系在特征固化温度、固化速率、反应热、反应级数以及表观活化能上存在明显的差别。Curing behavior of two curing systems which include benzoxazine （BZ） and benzoxazine/incom-pletely condensed tri-hydroxyl heptaphenyl silsesquioxane composites（BZ/TTPOSS） was compared by the nonis-othermal differential scanning calorimetry. The apparent activation energies and reaction order of both systems were obtained by Kissinger and Ozawa equation and curing kinetic equation was calculated. The results show that the cure reac- tion of benzoxazine could be catalyzed by the weak acidic function Si-OH on T7 POSS, difference in the two systems occurred at the characteristic curing temperature, curing rate, the heat of reaction, reaction order, and apparent activation energy.

关 键 词：苯并噁嗪 不完全笼型倍半硅氧烷 差示扫描量热法 固化动力学 

分 类 号：O631.6[理学—高分子化学]