烯丙基苯并恶嗪改性BT树脂的研究  

Study on Bismaleimide-Triazine Resin Modified by Allyl Benzoxazine

作　　者：陈虹[1] 寇开昌[1] 王益群[1] 张宇[1] 卓龙海[1] 

机构地区：[1]西北工业大学理学院,陕西省高分子科学与技术重点实验室,西安710129

出　　处：《工程塑料应用》2014年第9期1-4,共4页Engineering Plastics Application

基　　金：西北工业大学研究生创业种子基金项目(Z2014175)

摘　　要：采用熔融缩聚法合成了烯丙基苯并恶嗪(Boz-allyl),并利用傅立叶变换红外光谱,磁共振氢谱对其表征。用动态扫描量热与热重分析研究了其固化过程及热性能,随后用其对双马来酰亚胺–三嗪树脂(BT树脂)改性,并分析了改性树脂的力学性能。结果表明,Boz-allyl存在两种固化机理,固化物5%和10%热失重温度分别为325,385℃,在800℃时质量保持率仍可达34%,说明其具有优良的热稳定性和耐烧蚀性,用其改性后BT树脂韧性明显提高,当Boz-allyl质量分数为8%时冲击和弯曲强度达到最大值,分别为11.32 kJ/m2和127.11 MPa。An allyl benzoxazine（Boz-allyl） was synthesized by melt polycondensation method and the structures of Boz-allyl was confirmed by Fourier transform infrared spectroscopy and nuclear magnetic resonance. Using differential scanning calorimetery and thermal gravimetric analysis,the curing behavior and thermal property of it were probed. Then the bismaleimide-triazine resin modified by Boz-allyl was prepared and its mechanical properties was investigated. The results show a dual cure pattern of Boz-allyl ,while the 5%and 10%weight loss temperatures of polybenzoxazine is 325℃and 385℃respectively,with quality retention rate up to 34%at 800℃,which reveals good heat resistance and ablation resistance. The addition of Boz-allyl into BT resin significantly improves toughness and strength,its impact strength and flexural strength is up to their maximums of 11.32 kJ/m2 and 127.11 MPa when the mass fraction of Boz-allyl is 8%.

关 键 词：烯丙基苯并恶嗪 BT树脂 双马来酰亚胺 氰酸酯 改性 

分 类 号：TQ325[化学工程—合成树脂塑料工业]