酮胺法制备柔性聚氨酯型胺类环氧树脂固化剂  

Preparation of flexible polyurethane type amine curing agent for epoxy resin by ketoimine method

作　　者：韩琳 陶林娜 冯丽 陈荣源 杨晓壮 张忠厚 Han Lin;Tao Linna;Feng Li;Chen Rongyuan;Yang Xiaozhuang;Zhang Zhonghou(Zhengzhou University of Light Industry,Zhengzhou 450001,Henan,China;Chongqing New Ion Environment Technology Co.,Ltd,Chongqing 404100,China)

机构地区：[1]郑州轻工业大学,河南郑州450001 [2]重庆新离子环境科技有限公司,重庆404100

出　　处：《中国胶粘剂》2022年第2期25-29,共5页China Adhesives

基　　金：郑州轻工业大学众创空间孵化项目(2019ZCKJ102);河南省重点研发与推广专项(212102210204)。

摘　　要：以甲基异丁基酮、二乙烯三胺、聚乙二醇和异佛尔酮二异氰酸酯为原料,利用酮胺法合成了一种柔性聚氨酯型胺类固化剂(TRPU)。并对环氧树脂进行增韧改性,然后对固化剂的结构及固化体系的力学性能和粘接性能进行了表征。研究结果表明:合成的柔性固化剂能大幅提高环氧树脂体系的玻璃化转变温度(Tg)、韧性和粘接性能;与三乙烯四胺(TETA)复配作为固化剂时,该TRPU/TETA复配的固化体系的Tg达89.7℃,冲击强度为37.35 kJ/m^(2),断裂伸长率为18.42%,钢-钢粘接剪切强度为10.38 MPa,改性效果显著。Using methyl isobutyl ketone,diethylenetriamine,polyethylene glycol and isophorone diisocyanate as raw materials,flexible polyurethane type amine curing agent(TRPU)was synthesized by ketoimine method.The epoxy resin was toughened and modified,and then the structure of curing agent and the mechanical and bonding properties of curing system were characterized.The research results showed that the synthesized flexible curing agent could greatly improve the glass transition temperature(Tg),toughness and bonding properties of epoxy resin system.When compounded with triethylenetetramine(TETA)as curing agent,the Tgof the curing system of TRPU/TETA compounding reached 89.7℃,the impact strength was 37.35 kJ/m^(2),the elongation at break was18.42%,and the shear strength of steel-steel bonding was 10.38 MPa,which showed that the modification effect was remarkable.

关 键 词：环氧树脂 聚氨酯 固化剂 增韧 

分 类 号：TQ430.4[化学工程]