含芳香酯基液晶基元环氧树脂固化动力学FTIR研究  

Curing kinetics of a liquid crystalline epoxy with the aromatic ester mesogen by FTIR

作　　者：陈立新[1] 王汝敏[1] 蓝立文[1] 徐亚洪[2] 廖建伟[2] 

机构地区：[1]西北工业大学化工系,陕西西安710072 [2]北京航空材料研究院,北京100095

出　　处：《航空材料学报》2001年第1期43-46,共4页Journal of Aeronautical Materials

摘　　要：应用DTA分析研究了含液晶基元的环氧化物—对羟基苯甲酸对苯二酚二缩水甘油醚与四种芳香胺类固化剂的固化行为 ,选择了 4,4’—二氨基二苯甲烷为固化剂。根据环氧树脂自催化固化反应模型和氨基氢等活性假设 ,利用傅立叶变换红外光谱法研究了液晶环氧 /4 ,4’—二氨基二苯甲烷体系在 90℃、12 0℃、140℃恒温固化时的动力学行为。结果表明 ,在反应程度低于 40 %时 。The curing processes of diglycidlether of 4-hydroxyphenyl-4-hydroxybenzoate(PHBHQ) with four different amine curing agents were studied by means of the DTA. A suitable curing agent, 4,4′-diaminodiphenyl methane(DDM) was selected as well. Based on the self-catalyzed curing model of epoxy resin and equal activity of hydrogen amino, the isothermal curing processes of PHBHQ/DDM liquid system at 90°C, 120°C, 140°C were monitored by Fourier Transform Infra-Red Spectrum(FTIR). The result showed that the curing process was accorded with the self-catalyzed curing model when the reaction extent bellowed 40%.

关 键 词：自催化模型 固化行为 含芳香酯基液晶基元环氧树脂 FTIR 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]