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。
关键词:
多硫醇改性,
固化剂,
环氧,
点击反应,
KH-570,
胶黏剂
Abstract: 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 curingepoxy 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.
Key words:
modified polythiol,
curing agent,
epoxy,
click reaction,
KH-570,
adhesive
中图分类号:
傅陈晨, 李辉, 杨习雨, 等. 改性多硫醇固化剂的合成及其性能研究[J]. 涂料工业, 2025, 55(3): 36-41.
FU C C, LI H, YANG X Y, et al. Synthesis and Properties of Modified Polythiol Epoxy Curing Agent[J]. Paint & Coatings Industry, 2025, 55(3): 36-41.