摘要： 为降低笼型倍半硅氧烷环氧树脂的官能度，合成了一种含有部分甲基的笼型倍半硅氧烷环氧树脂(GM - POS)，其结构以六面体的 T8结构为主。用 DSC、TG、TBA和 x-射线能谱仪研究了 GM-POS/双酚 -A环氧共混物 与甲基四氢苯酐(MeTHPA)的固化性能及热性能。结果表明 2种环氧可共同固化，固化反应的平均活化能 Ea 为 71.10kJ/mol，反应级数为一级;固化树脂的玻璃化转变温度、热分解温度及热残余量均随 GM-POS加入量的增加而升高。

关键词: 笼型倍半硅氧烷 , 环氧树脂 , 甲基四氢苯酐 , 动力学 , 热性能

Abstract: In order to decrease the functional group density of cage polyhedral oligomericsil sesquioxanes epoxy resins(POSSER)，a novel POS containing some methyl groups，i.e.GM -POSS was synthesized， the main structure of which was hexahedron T8.The curing kinetics and thermal properties of bisphenol-A epoxy resin modified by GM -POSS hybrid resin and curing agent MeTHPA，were investigated by means of diferential scanning calorimetry(DSC)，thermogravimetric analysis(TGA)，torsional braid analysis(TBA) and X-ray energy dispersive spectrometry(EDS).The results indicated that the two epoxy resins could be co-cured，with the average activation energy Ea71.10kJ/mol and first order reaction.TGA and TBA a- nalysis showed that the thermal decomposition temperature，thermal residue and glass transition temperature of the hybrid resins were remarkably improved with increasing of the content of GM -POSS.

Key words: polyhedral oligomeric silsesquioxane, epoxy resin, curing kinetics, thermal properties;MeTHPA