酰亚胺结构改性苯并噁嗪树脂的结构与性能  

Structure and Properties of Benzoxazine Resin Modified with Imide Structure

作　　者：石锐 钟超 赵星宇 刘淋泽 王炼 盛玉萍 李新跃 夏益青 SHI Rui;ZHONG Chao;ZHAO Xing-yu;LIU Lin-ze;WANG Lian;SHENG Yu-ping;LI Xin-yue;XIA Yi-qing(College of Materials Science and Engineering,Sichuan University of Science and Engineering,Material Corrosion and Protection Key Laboratory of Sichuan Province,Zigong 643000,China)

机构地区：[1]四川轻化工大学材料科学与工程学院,材料腐蚀与防护四川省重点实验室,四川自贡643000

出　　处：《塑料工业》2021年第10期52-56,85,共6页China Plastics Industry

基　　金：四川省科技厅重点研发项目(2018GZ0336);材料腐蚀与防护四川省重点实验室开放基金(2019CL09,2020CL14);自贡市重点科技计划项目(2019YYJC21);四川轻化工大学研究生创新基金资助项目(y2020042,y2020034)。

摘　　要：首先制备了两种含羟甲基的苯并噁嗪单体(4HBA-a和4HBA-ddm),并采用其对二苯甲烷二异氰酸酯(MDI)进行封端,制备两种苯并噁嗪封端的异氰酸酯(PU1和PU2)。然后,将封端产物与双酚A二苯醚二酐(BPADA)进行共混,经过高温固化后制备出一系列含酰亚胺结构的苯并噁嗪树脂。采用傅里叶变换红外光谱仪(FTIR)、热重分析仪(TG)和动态热机械分析仪(DMA)研究了其结构和性能。结果表明,在阶段固化温度最高为200℃下,成功制备了一系列的含酰亚胺结构的苯并噁嗪聚合物,该共混聚合物拥有优异的热稳定性,玻璃化转变温度高达199℃,失重10%温度高达398℃,在800℃的残炭率最高达到了62.9%。Two hydroxymethyl-containing benzoxazine monomers(4 HBA-a and 4 HBA-ddm)were firstly prepared,and used them to block diphenylmethane diisocyanate(MDI)to prepare two benzoxazine-blocked isocyanates(PU1 and PU2).Then,the end-capped product was blended with bisphenol A diphenyl ether dianhydride(BPADA),and a series of imide structure-containing benzoxazine resins were prepared after high temperature curing.Its structure and performance were characterized by Fourier transform infrared spectroscopy(FTIR),thermogravimetric analysis(TGA)and dynamic mechanical analysis(DMA).The results show that a series of imide structure-containing benzoxazine resins have been successfully prepared after cured at 200℃.The polymer blends show excellent thermal stability with the highest glass transition temperature of 199℃,the temperature of 10%weight loss is up to 398℃,and the char yield values at 800℃is up to 62.9%.

关 键 词：苯并噁嗪 封端异氰酸酯 酰亚胺 

分 类 号：TQ320.7[化学工程—合成树脂塑料工业]