端羧基丁腈橡胶和双酚A增韧混合环氧树脂体系的研究

STUDIES ON AN INTERMINGLED EPOXY RESIN SYSTEM TOUGHENED BY CTBN AND BISPHENOL A

摘要: 本文以2-乙基-4-甲基咪唑(简称2,4-咪唑)为固化剂,研究了端羧基丁腈橡胶(简称CTBN)和CTBN/双酚A改性的双官能环氧E-51和四官能环氧F-76混合体系的热-机械性能、微观形貌和声发射响应。结果表明:加入5份CTBN,对混合环氧树脂体系的增韧效果不明显。加入5份CTBN和24份双酚A,使体系的韧性增加。但CTBN加入的顺序不同,其微观结构和力学性能不同,增韧效果亦不同。

Abstract: In this paper,the thermal and mechanical prcperties,microscopic morphology and acousltic emission(A,E,)response of the intermingled epoxy resin system modified by CTBN and bisphenol A are investigated with 2-ethyl-4-methylimidaze as curing agent.The intermingled epoxy resin system consrists of bifunctional epoxy resin E-51 and tetrafunctional epoxy resin F-76.