中文摘要：

为改性双酚A型环氧树脂（DGEBA）的热性能,利用γ-氨丙基T8（A-POSS）与苯基缩水甘油醚（PGE）反应制得改性剂多羟基POSS（SP2-POSS）,并利用不同质量分数的SP2-POSS（分别为8%,15%,30%,45%,60%,75%）掺杂改性DGEBA高分子交联体系.对改性的DGEBA体系分别进行结构和热性能测试,结构测试结果表明,改性后的体系确实有多羟基存在;热性能测试结构表明,多羟基的存在使得体系的交联度提高,从而使反应固化热、玻璃化转变温度、热失重温度有所提高,其中含75%的改性DGEBA高分子体系具有最好的热性能.

英文摘要：

To enhance the thermal property of diglycidyl ether of bisphenyl A （DGEBA）,（polyhydroxyl） POSS （SP2-POSS） modifier was prepared using a reaction of （γ-aminopropyl）POSS （A-POSS） and phenyl glycidyl ether （PGE）.Different fractions of SP2-POSS （8% ,15% ,30% ,45% ,60% and 75% ） were added into diglycidyl ether of bisphenyl A （DGEBA） to modify the network and enhance the thermal property.The results show that the crosslinking-network density,curing heats and glass transition temperature are enhanced due to the existance of the polyhydroxyls.The network containing 75% SP2-POSS possesses the best thermal properties.