摘要： 从分子设计出发，采用聚乙二醇二缩水甘油醚（ＤＧＥＰＧ）、三乙烯四胺（ＴＥＴＡ）和环氧树脂 ＥＰＯＮ ８２８ 为原料，合成了不需成盐的一系列非离子型自乳化的水性环氧树脂固化剂。 采用红外手段表征了其结构，采用差示扫描量热仪（ＤＳＣ）研究了该水性环氧体系的固化行为。 结果表明：该产品含有聚醚链段，在水中具有良好的分散性能，得到的漆膜具有优异的物理机械性能、耐水性和耐盐水腐蚀性；Ｇ－Ｄ－４ 系列固化剂与环氧树脂水分散体系的 Ｋｉｓｓｉｎｇｅｒ 法表观活化能最低为 ４６.６３ ｋＪ／ ｍｏｌ。
关键词:
非离子型自乳化,
水性环氧固化剂,
表观活化能
Abstract: Based on the molecular design, a series of new nonionic self-emulsified water- bore epoxy curing agents were prepared using DGEPG, TETA and EPON 828 as raw materi-als. The structure of the curing agent was characterized by FT-IR. The curing behavior of the waterborne epoxy resin was investigated by differential scanning calorimeter(DSC). The result showed that the nonionic self-emulsified waterborne epoxy curing agent had good dispersibility due to the molecular chain of polyglycol chain contained therein. In addition, the cured film had good physical, water resistant and anticorrosive performance The lowest Kissinger apparent activation energy of the curing agent and epoxy dispersion was 46. 63 kJ/mol.
Key words:
nonionic self-emulsified,
waterborne epoxy curing agent;apparent activation energy
刘晓芳, 王荣威, 魏 铭, 刘 壮, 李 园. 非离子型自乳化水性环氧固化剂的制备、性能及固化机理研究[J]. 涂料工业, 2017, 47(5): 44-50.
Liu Xiaofang, Wang Rongwei, Wei Ming, Liu Zhuang, Li Yuan. Study on Preparation, Properties and Curing Mechanism of Nonionic Self-Emulsified Waterborne Epoxy Curing Agent[J]. Paint & Coatings Industry, 2017, 47(5): 44-50.