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.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1994年第1期41-47,共7页
Acta Polymerica Sinica
关键词
环氧树脂
二硅氧烷
固化
改性
胺
Epoxy Resin,Disiloxane, Curing kinetic, Modification,M orghology
