二苯基硅二醇改性环氧树脂耐热性的研究  

Investigation on Heat Resistance of Epoxy Resin Modified with Diphenylsilandiol

作　　者：吴万尧[1] 余谋发[1] 林国良[1] 

机构地区：[1]厦门大学化学化工学院,福建厦门361005

出　　处：《厦门大学学报（自然科学版）》2009年第2期251-254,共4页Journal of Xiamen University：Natural Science

摘　　要：为改善双酚A型环氧树脂的耐热性,采用二苯基硅二醇单体与环氧树脂E-44直接开环加成聚合的方法.以辛酸亚锡作催化剂、4,4′-二氨基二苯基砜(DDS)为固化剂,研究了反应条件和E-44与二苯基硅二醇的物质的量配比对改性产物耐热性能的影响.通过傅立叶红外光谱仪(FT-IR)、动态热机械仪(DMTA)、热失重分析仪(TGA)进行分析,得出最佳反应条件是150℃/2h,配比为3∶1时,改性环氧树脂的玻璃化转变温度(Tg)为147.45℃,分解温度(Td)达到490.5℃(热失重50%).实验结果表明:二苯基硅二醇改性可以提高环氧树脂的耐热性能.In order to enhance the heat resistance of diglycidyl ethers of bisphenol A type epoxy resin,in this paper, epoxy resin（E- 44） was modified with diphenylsilandiol monomer through direct ring-opening addition. With stannous octanoate as the catalyst and 4,4′diaminodiphenylsulfone（DDS） as the curing agent, we studied the influence of reaction conditions and the molar ratio of resin and diphenylsilandiol on the heat resistance of modified products. Through fourier transform infrared spectroscopy analysis（FT-IR）, dynamic thermal mechanical analysis （DMTA） and thermogravimetric analyzer （TGA）, the best reaction conditions and molar ratio were obtained to be 150℃/2 h and 3 ： 1 ,respectively. Glass transition temperature（Tg） is 147.45℃ ,and temperature at 50% loss is 490.5℃. The results reveal modification by diphenylsilandiol can enhance the heat resistance of epoxy resin.

关 键 词：双酚A型环氧树脂 二苯基硅二醇 耐热性能 

分 类 号：TQ43[化学工程]