端羧基丁腈橡胶改性环氧树脂的研究  

Epoxy Resin Modified Carboxyl-terminated Nitrile Rubber

作　　者：陈青[1,2] 宫大军[1] 魏伯荣[1] 柳丛辉[1] 

机构地区：[1]西北工业大学理学院高分子研究所,西安710129 [2]海口经济学院,海口5711000

出　　处：《绝缘材料》2011年第2期30-33,38,共5页Insulating Materials

摘　　要：以2-乙基-4-甲基咪唑作为固化剂,运用红外光谱对端羧基丁腈橡胶(CTBN)增韧改性环氧树脂(EP)的预聚反应和固化反应进行分析。通过测试改性环氧树脂固化物的冲击强度、弯曲强度和拉伸剪切强度评价其增韧效果,探讨其增韧机理,并通过热失重(TG)分析固化物的热稳定性能。结果表明:CTBN改性EP后,树脂的冲击强度明显提高,拉伸剪切强度有所提高,热稳定性能提高,但弯曲强度和弯曲模量有所降低。Using 2-ethyl-4-methyl imidazole as curing agent,pre-polymerization and curing reaction of epoxy resin modified by carboxyl-terminated nitrile rubber（CTBN） were analyzed by infrared spectroscopy.By testing the impact strength,flexural strength,tensile shear strength of modified cured epoxy resin,the toughening effects were evaluated and the toughening mechanism was investigated.The thermal stability of the cured resin was studied by thermogravimetric analysis（TG）.The results show that the impact strength of CTBN modified EP increases greatly,the tensile shear strength increases and the thermal stability improves,but the bending strength and bending modulus decrease.

关 键 词：环氧树脂 端羧基丁腈橡胶 改性 力学性能 

分 类 号：TM215[一般工业技术—材料科学与工程] TQ323.5[电气工程—电工理论与新技术]