改性咪唑的合成及其促进EP/己二酰肼固化体系的研究  

Study on synthesis of modified imidazole and its application in promoting curing system of EP/adipic dihydrazide

作　　者：许文英[1] 周建萍[1] 熊磊[1,2] 

机构地区：[1]南昌航空大学材料科学与工程学院,江西南昌330063 [2]西北工业大学理学院应用化学系,陕西西安710072

出　　处：《中国胶粘剂》2010年第11期1-4,共4页China Adhesives

基　　金：嘉兴市科技局资助项目(2008AZ1013)

摘　　要：以顺丁烯二酸作为2-乙基-4-甲基咪唑(EMI)的改性剂,合成出一种潜伏性促进剂——改性咪唑,并采用红外光谱(FT-IR)法对其结构进行了表征。以己二酰肼作为环氧树脂(EP)的固化剂,考察了改性咪唑对EP/己二酰肼胶粘剂的凝胶时间、固化特性、室温储存期和粘接性能等影响。结果表明:当w(改性咪唑)=1.5%时,改性咪唑对EP/己二酰肼体系具有较好的促进作用(体系放热温度下降了20℃左右);该胶粘剂的固化条件为"110℃/1 h→130℃/1 h",室温储存期超过60 d,并具有粘接性能优、耐水性能好等特点。A latent accelerant——modified imidazole was made from the reaction between maleic acid and 2-ethyl-4-methylimidazole（EMI）,and the structure of modified imidazole was characterized by FT-IR method.With adipic dihydrazide as curing agent of epoxy resin（EP） and modified imidazole as accelerant of EP/adipic dihydrazide,so the influences of modified imidazole were investigated on some performances（such as gelling time,curing speciality,storage time at room temperature and bonding performances） for the adhesive based on EP/adipic dihydrazide.The results showed that the modified imidazole had better promoting action on EP/adipic dihydrazide system because the exothermic temperature of curing system with modified imidazole was 20 ℃ about less than that without modified imidazole when mass fraction of modified imidazole was 1.5%.The curing condition of adhesive,which had well bonding performance,water resistance and storage stability（storage time at room temperature over 60 d）,was ＂110 ℃/1 h→130 ℃/1 h＂.

关 键 词：改性咪唑 环氧树脂 己二酰肼 潜伏性 促进剂 顺丁烯二酸 2-乙基-4-甲基咪唑 

分 类 号：TQ433.437[化学工程]