邻苯二甲腈基联苯型酚醛树脂的制备与性能  

Preparation and Properties of a Novel Phthalonitrie Functional Biphenyl-Type Novolac Resin

作　　者：罗振华[1] 张勃兴[1,2] 周恒[1,2] 韩伟健[1] 赵彤[1] 

机构地区：[1]中国科学院化学研究所,北京100080 [2]中国科学院研究生院,北京100039

出　　处：《宇航材料工艺》2011年第4期20-23,共4页Aerospace Materials & Technology

基　　金：国家自然科学基金支持项目:50903086

摘　　要：以碱为催化剂,通过联苯型酚醛树脂与4-硝基邻苯二甲腈之间的亲核取代反应,制备了邻苯二甲腈基联苯型酚醛树脂(PBN)。流变性能测试结果表明,PBN树脂在180～300℃,黏度<400 mPa.s,表明该树脂具有优良的加工性能。DSC测试结果表明,PBN树脂的固化温度为280～450℃,固化反应峰值温度为377℃,固化放热约为187 J/g。该树脂表现出优良的耐热性,其储能模量起始下降温度高于450℃,Td5约为529℃,氮气氛围、900℃残碳率约为78%。A novel phthalonitrile functional biphenyl-type novolac resin（PBN） was synthesized by nucleophilic substitution reaction between 4-nitrophthalonitirle and biphenyl-type novolac resin using base as catalyst.The results of rheology show that the complex viscosity of PBN resin is below 400 mPa·s at 180 to 300℃,indicating that the resin possesses excellent processing capability.DSC curve of PBN resin reveales that the thermal polymerization reaction occurs between 280℃ and 450℃ with peak temperature of 377℃ and exothermic enthalpy of 187 J/g.PBN resin exhibites excellent thermal stability.The results of TGA shows that Td5 and R900℃ are about 529℃ and 78%,respectively.

关 键 词：邻苯二甲腈 联苯型酚醛树脂 加成固化 工艺性 耐热性 

分 类 号：TQ226.61[化学工程—有机化工]