1,3-二(2′-氨基亚乙基)-2-甲基咪唑溴盐与环氧树脂E-51的固化工艺  

Curing process of 1,3-di(2′-aminoethyl)-2-methylimidazolium bromide with epoxy resin E-51

作　　者：苏泽 白金虎 吴琼 刘龙[2] 张延强[2,3] SU Ze;BAI Jinhu;WU Qiong;LIU Long;ZHANG Yanqiang(Henan Institute of Advanced Technology,Zhengzhou University,Zhengzhou 450001,China;CAS Key Laboratory of Science and Technology on Particle Materials,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China;Zhengzhou Institute of Emerging Industrial Technology,Zhengzhou 450000,China)

机构地区：[1]郑州大学河南先进技术研究院,郑州450001 [2]中国科学院过程工程研究所中国科学院粉体材料技术重点实验室,北京100190 [3]郑州中科新兴产业技术研究院,郑州450000

出　　处：《中国科学院大学学报（中英文）》2024年第1期42-49,共8页Journal of University of Chinese Academy of Sciences

基　　金：国家自然科学基金(22178359,21878278)资助。

摘　　要：通过咪唑环上的季铵化反应,制备一种适用于环氧树脂的双氨基咪唑类离子液体固化剂1,3-二(2′-氨基亚乙基)-2-甲基咪唑溴盐(DAIL)。以环氧树脂E-51作为基体树脂,深入研究DAIL作为固化剂的固化工艺条件和固化物的性能。结果表明,DAIL可作为环氧树脂E-51的中温固化剂使用,二者的最佳质量比为DAIL∶E-51=20∶100,最佳固化温度范围为74~105℃,后固化温度为162℃,固化后的浇注体样条抗拉强度为159 MPa,弹性模量为2281 MPa,断裂伸长率为12.8%,热分解温度为424.4℃。DMA分析表明DAIL/E-51浇注体最大损耗因子tanδ为0.56,玻璃转化温度θg为83℃,对应的贮存模量E为290 MPa,交联密度为30149 mol·m^(-3)。该结果为高力学性能中温环氧树脂固化剂的使用提供了重要实验依据。A diaminoimidazole ionic liquid curing agent,1,3-di(2′-aminoethyl)-2-methylimidazolium bromide(DAIL)is prepared via quaternization of imidazole rings.With epoxy resin E-51 as matrix resin,the curing process conditions of DAIL as curing agent and the properties of cured products are studied in depth.The results show that DAIL can be used as a medium temperature curing agent for epoxy resins.The optimal ratio of the two is DAIL∶E-51=20∶100,the optimal curing temperature range is 74~105℃,and the post-curing temperature is 162℃.The tensile strength of the cured cast body splines is 159 MPa,the elastic modulus is 2281 MPa,and the elongation at break is 12.8%,the thermal decomposition temperature is 424.4℃.DMA analysis shows that the maximum loss factor tanδof the DAIL/E-51 cast body is 0.56,and the glass transition temperatureθg is 83℃,the corresponding storage modulus E is 290 MPa,and the crosslinking density is 30149 mol·m-3.This study provides an important experimental basis for the use of high mechanical properties of medium temperature epoxy resin curing agent.

关 键 词：1 3-二(2′-氨基亚乙基)-2-甲基咪唑溴盐 环氧树脂 固化剂 固化原理 固化动力学 

分 类 号：TB324[一般工业技术—材料科学与工程] TQ323.5[化学工程—合成树脂塑料工业]