一种新型液晶环氧树脂的合成与固化行为研究  

Synthesis and curing behavior of a novel liquid crystalline epoxy resin

作　　者：曹璐[1] 任柯昱 李波[2,3] Cao Lu;Ren Keyu;Li Bo(Xinyang Vocational and Technical College,Xinyang 464000,Henan,China;Guilin Electrical Equipment Scientific Research Institute,Guilin 541004,Guangxi,China;Central South University,Changsha 410083,Hunan,China)

机构地区：[1]信阳职业技术学院,河南信阳464000 [2]桂林电器科学研究院有限公司,广西桂林541004 [3]中南大学,湖南长沙410083

出　　处：《中国胶粘剂》2020年第4期29-32,共4页China Adhesives

摘　　要：合成了一种含有C=N双键的新型液晶环氧树脂(LCER),利用核磁共振(1H-NMR)、差示扫描量热分析(DSC)和偏光显微镜(POM)对其结构和性能进行表征。研究结果表明:LCER为向列型液晶,其液晶相存在温度为78~103℃。对其与固化剂4,4′-二氨基二苯甲烷(DDM)和4,4′-二氨基二苯砜(DDS)的固化反应进行了对比。试验结果表明:随着升温速率的增加,固化体系的稳定性提高,且LCER/DDM固化体系的热稳定性更好。A novel liquid crystalline epoxy resin(LCER)containing C=N double bond was synthesized,and its structure and properties were characterized by nuclear magnetic resonance(1H-NMR),differential scanning calorimetry analysis(DSC)and polarizing microscope(POM).The research results showed that LCER was a nematic liquid crystal,and its liquid crystal phase temperature was 78~103℃.Its curing reaction with curing agents 4,4′-diaminodiphenylmethane(DDM)and 4,4′-diaminodiphenylsulfone(DDS)was compared.The test results showed that with the increase of heating rate,the stability of the curing system was improved,and the thermal stability of LCER/DDM curing system was better.

关 键 词：液晶环氧树脂 合成 固化 

分 类 号：O632.6[理学—高分子化学]