聚氨酯改性TDE-85/E-51环氧树脂的固化反应  

Curing Reaction of TDE-85/E-51 Epoxy Resin Modified by Polyurethane

作　　者：李芝华[1,2] 卢健体[1,2] 丑纪能[3] 郑子樵[1,2] 邓飞跃[3] 

机构地区：[1]有色金属材料科学与工程教育部重点实验室 [2]中南大学材料科学与工程学院 [3]中南大学化学与化工学院,湖南长沙410083

出　　处：《高分子材料科学与工程》2009年第5期26-28,共3页Polymer Materials Science & Engineering

基　　金：国家新材料科技攻关项目(MKPT-04-388)

摘　　要：以混合芳胺为固化剂,通过聚氨酯(PU)对4,5-环氧环己烷-1,2-二甲酸二缩水甘油酯(TDE-85)与二酚基丙烷缩水甘油醚(E-51)环氧树脂的混合树脂体系的改性,制备了高性能聚氨酯改性环氧树脂(PU/EP)。通过差示扫描量热法(DSC),确定了PU/EP体系的最佳固化条件,并探讨了PU/EP体系的固化反应动力学特征。研究结果表明,PU/EP体系的最佳固化条件为:25℃12h+150℃2h。PU/EP体系的固化反应活化能为69.18kJ/mol,反应级数为0.901。With polyurethane modification of the blend of phenol-based epoxy propane （E-51） and diglycidyl-4,5- epoxycyclohexane- 1,2-dicarboxylate （TDE-85）, the high performance TDE-85/E-51 epoxy resin were prepared with the mixed aromatic amine of m-phenylenediamine（MPDA） and diaminodiphenylmethane（DDM） as curing agents. The curing technology of the TDE-85/E-51 epoxy resin modified by polyurethane was determined by differential scanning calorimeter （I[kSC） technique, and the kinetics of the curing processes were analyzed by Kissinger and Crane equations, based on the relationship of the curing kinetic parameters of the curing system. The results indicate that the optimal curing conditions of TDE-85/E-51 resin modified by polyurethane are 25 ℃ 12h ＋ 150 ℃ 2h. The activation energy of the curing reaction is 69.18 kJ/mol, and the order of reaction is 0. 901.

关 键 词：聚氨酯 环氧树脂 固化反应 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]