一种新型液晶环氧树脂的合成、表征和固化反应动力学
Synthesis, Characterization and Curing Kinetics of a novel Liquid Crystalline Epoxy Resin
王海梅 朱丽荣 张育英 杜宗杰 张保龙 张越超
作者信息
摘要
首次合成了一种不对称联苯和芳香酯型液晶环氧树脂4''-环氧丙氧基苯甲酸-4-环氧丙氧基联苯-4'-酯(EBEPC)，利用IR、1H NMR、DSC和POM对其结构和性能进行了表征。结果表明EBEPC在190℃时可形成明显的向列相液晶，而固化体系EBEPC/DDM则形成了近晶相织构。并对EBEPC/DDM固化体系的等温固化动力学进行了研究，结果表明该固化反应符合自催化固化反应特征，且液晶相的形成对固化反应具有很大影响。
Abstract
This paper described the synthesis and mesomorphic behavior transition of a novel liquid crystalline epoxy resin 4-(2,3-epoxypropoxy)biphenyl,4′′-(2,3-epoxypropoxy)phenyl-4′carboxylate (EBEPC) , which combined a hydroxyl benzoic aromatic ester and bp rigid-rod group. EBEPC showed a clear nematic schlieren texture under curtain conditions. The reaction kinetics of EBEPC cured by 4,4′-diaminodiphenyl-methane (DDM) was studied by using an isoconversional method under isothermal conditions with differential scanning calorimetry (DSC). The isothermal DSC data can be fitted reasonably by an autocatalytic curing model. Smectic phases had been observed in the EBEPC/DDM curing system. The results of DSC showed that the formation of the liquid crystalline phase (LC) had pronounced influence on the curing reaction.关键词
液晶态高分子/环氧树脂/固化动力学/织态结构Key words
liquid crystalline polymer/epoxy resins/curing kinetics/texture structure引用本文复制引用
王海梅,朱丽荣,张育英,杜宗杰,张保龙,张越超.一种新型液晶环氧树脂的合成、表征和固化反应动力学[EB/OL].(2011-01-19)[2026-07-02].http://www.paper.edu.cn/releasepaper/content/201101-1024.学科分类
合成树脂工业、塑料工业/高分子化合物工业
