新型酯类环氧液晶的合成及应用  

Synthesis and Application of Novel Liquid Crystalline Epoxy Resin Containing Ester

作　　者：杨小王[1] 陆绍荣[1] 虞锦洪[1] 吴兵[1] 

机构地区：[1]桂林工学院有色金属材料及其加工新技术省部共建教育部重点实验室,广西桂林541004

出　　处：《高分子材料科学与工程》2008年第2期39-42,共4页Polymer Materials Science & Engineering

基　　金：广西自然科学基金资助项目(0447053);广西教育厅项目(桂教科研[2004]20文)

摘　　要：采用相转移催化剂合成液晶环氧预聚物(PHQEP),用红外光谱、核磁共振谱、广角X射线衍射及偏光显微镜(POM)对PHQEP的分子结构和液晶性进行表征。研究了PHQEP增韧改性环氧树脂固化体系的力学性能,通过DSC、TGA及SEM等测试手段对材料的结构与性能进行了表征。结果表明,PHQEP是典型的向列型液晶,加入PHQEP的环氧固化体系,韧性和热稳定性都有很大的提高。A new kind of liquid crystalline epoxy oligomer was synthesized by using tetrabutylammonium bromide as phase transfer catalyst. The structure and liquid crystalline property of the PHQEP were characterized by means of FT-IR, ^1H-NMR, WAXD and POM. The mechanical property, thermal stability and morphologies of the curing systems were investigated by DSC, TGA and SEM, etc. The results show that the PHQEP is a typical nematic liquid crystal, the toughness and thermal stability of the curing systems with PHQEP are improved at the same time.

关 键 词：环氧树脂 液晶环氧 韧性 热稳定性 

分 类 号：O631.1[理学—高分子化学]