双组分水性聚氨酯色漆耐水性探索

摘要

通过2种研磨工艺，采用相同配方体系制备双组分水性聚氨酯色漆，探讨了色浆研磨工艺、分散剂分散效率、水性羟基丙烯酸分散体、水性多异氰酸酯固化剂配比、流平剂、基材润湿剂和增稠剂对涂膜耐水性的影响，得到耐水性优良，可在大巴车、轨道交通、工程机械等领域表面应用的双组分水性聚氨酯色漆。%Through two kinds of grinding process by preparation of two-component waterborne polyurethane paint formulations, color paste grinding process was studied. The dispersion efficiency, waterborne hydroxyl acrylate dispersion, waterborne polyisocyanate curing agent ratio, flow and leveling agent, substrate wetting agent and thickening agent on resistance of paint effects, excellent water resistance were discussed. The prepared coatings could be applied in the bus, rail transportation, engineering machinery and other areas with good performances.