改性多硫醇固化剂的合成及其性能研究  

Synthesis and Properties of Modified Polythiol Epoxy Curing Agent

作　　者：傅陈晨 李辉[1] 杨习雨 关明艺 陈小金 FU Chenchen;LI Hui;YANG Xiyu;GUAN Mingyi;CHEN Xiaojin(School of Chemical Engineering and Pharmacy,Wuhan Institute of Technology,Wuhan 430205,China;Rich Chemical Co.,Ltd.,Jinzhou,Hubei 434200,China)

机构地区：[1]武汉工程大学化工与制药学院,武汉430205 [2]瑞奇化工(湖北)有限公司,湖北荆州434200

出　　处：《涂料工业》2025年第3期36-41,共6页Paint & Coatings Industry

摘　　要：分别以γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH570)和甲基丙烯酸羟丙酯为原料,三乙胺为催化剂,通过硫醇点击反应对四(3-巯基丙酸)季戊四醇酯进行结构改性,得到含有机硅单元和羟丙酯单元的无臭味改性多硫醇固化剂P(SH)_(3)-Si和P(SH)_(3)-OH。以环氧树脂E51为主体树脂,2,4,6-三(二甲胺甲基)苯酚(DMP-30)为促进剂,自制的改性多硫醇固化剂P(SH)_(3)-Si和P(SH)3-OH以一定比例复配为固化剂,制备了一系列高性能室温快速固化环氧胶黏剂。研究了多硫醇固化剂P(SH)_(3)-Si添加量对胶黏剂凝胶时间、黏度、硬度、拉伸强度、剪切拉伸强度和吸水率等性能的影响规律。结果表明:当P(SH)_(3)-Si添加量为10%时,胶黏剂具有最佳的力学性能、黏结性能和耐水性。Using 3-(trimethoxysilyl)propyl methacrylate(KH570)and 2-hydroxypropyl methacrylate as raw materials and triethylamine as catalysts,we synthesized two modified polythiol curing agents P(SH)_(3)-Si and P(SH)_(3)-OH containing organic silicon units and hydroxypropyl ester units by click reaction,respectively.A series of high performance room temperature fast curing epoxy adhesives were prepared by using epoxy resin E51 as the main resin,2,4,6-tris(dimethylaminomethyl)phenol(DMP-30)as the promoter,and modified polythiol curing agents P(SH)_(3)-Si and P(SH)_(3)-OH as curing agent.The effects of addition of P(SH)_(3)-Si on the properties of adhesive gel time,viscosity,hardness,tensile strength,shear tensile strength,and water absorption were studied.The results showed that when the fraction of P(SH)_(3)-Si was 10%,the adhesive indicated excellent mechanical properties and good water resistance.

关 键 词：多硫醇改性 固化剂 环氧 点击反应 KH-570 胶黏剂 

分 类 号：TQ630.4[化学工程—精细化工]