水溶性聚酯树脂硅钢片漆的制备

Preparation of Water-soluble Polyester Resin for Lamination Coating

针对传统硅钢片漆溶剂毒性大、污染大的问题,以邻苯二甲酸酐、间苯二甲酸、新戊二醇、偏苯三酸酐和三羟甲基丙烷等为主要原料,合成了水溶性聚酯树脂硅钢片漆。通过对比不同配方漆液的粘度、胶化时间、漆膜的硬度、附着力以及韧性等因素,分析不同原料及不同助剂对树脂性能的影响,得出了最佳的树脂配方。结果表明,制备的树脂漆膜的综合性能良好。

In view of high solvent toxicity and severe pollution of conventional lamination coating,a new water-soluble polyester resin was prepared through using phthalic anhydride,isophthalic acid,neopentyl glycol,trimellitic anhydride and trimethylolpropane as main raw materials.By comparing the fluid viscosity, gel time,film hardness,adhesion,toughness and other factors of paint liquid with various formulations,the effects of different raw materials and promoter on the properties of resin were analyzed and optimum formula of resin was obtained.Results indicate that the comprehensive performance of lamination coating prepared by this water-soluble polyester resin is excellent.