胺固化端环氧基二硅氧烷动力学及性能研究  

STUDIES ON THE KINETICS AND CHARACTERIZATION OF DGEBA/DDM SYSTEM MODIFIED WITH EPOXY TERMINATED DISILOXANE

作　　者：张保龙[1] 曹国强[1] 黄吉甫[1] 丁培元[1] 张宝申[1] 杜宗杰[1] 周秀中[1] 

机构地区：[1]南开大学化学系

出　　处：《高分子学报》1994年第1期41-47,共7页Acta Polymerica Sinica

摘　　要：合成了１，３－二甲基－１，３－二乙基－１，３－双［３－（２，３－环氧丙氧基）丙基］二硅氧烷（ＴＥＤＳ）．对其与二正丁胺的模型反应、与ＤＤＭ（４，４’－二氨基二苯基甲烷）的固化反应劝力学研究表明，反应对ＴＥＤＳ为一级反应．ＴＥＤＳ改性环氧Ｅ—５１体系的动态力学性能、冲击性能和形态结构的研究表明，随改性体系中ＴＥＤＳ含量的增加，体系的玻璃化温度是线性下降、冲击强度增大、冲击试样的断裂面渐渐显现出韧性断裂的特征．imethyl - 1, 3 - diethyl - 1, 3 - his(3 - (2, 3 - epoxy propoxy ) propyl )disiloxane (TEDS) was synthesized and used as modifier for epoxy reSin. Basedon the studies on the curing kinetics of TEDS/ DDM system as well as model rcasnon of TEDS/di - n- butylamine, the first order kinetic was proposed for TEDS.Besides, the dynamic mechanical behavior, impact strength and the morphology ofDGEBA/DDM system modified with TEDS were studied. Results showed thatthe impact strength of the modified system was found to be enhanced with the increase of TEDS content, whereas the glass transition temperature (T.) was deereand linearly. SEM observation of the fracture surface of the impact spedmen also showed that as the increase of the modifier content the toughed fracture charalters were obviously appeared.

关 键 词：环氧树脂 二硅氧烷 固化 改性 胺 

分 类 号：O634.41[理学—高分子化学]