长活化期快干型水性双组分聚氨酯涂料的制备及性能研究  

Preparation and Properties of Quick-drying Waterborne Two-Component Polyurethane Coatings with Long Activation Period

作　　者：熊效 刘文浩 罗东 舒金兵 申亮 XIONG Xiao;LIU Wen-hao;LUO Dong;SHU Jin-bing;SHEN Liang(The Department of Coatings and Polymeric Materials,College of Chemistry and Chemical Engineering,Jiangxi Science&Technology Normal University,Nanchang 330013,Jiangxi,China;Jiangxi Provincial Engineering Research Center for Waterborne Coatings,Nanchang 330013,Jiangxi,China)

机构地区：[1]江西科技师范大学化学化工学院涂料与高分子系,南昌330013 [2]江西省水性涂料工程研究中心,南昌330013

出　　处：《中国涂料》2023年第12期60-67,76,共9页China Coatings

摘　　要：通过探究羟丙分散体与羟丙乳胶配比、成膜助剂及增稠剂的种类和用量制备了一款长活化期快干型水性双组分聚氨酯(2KPU)涂料。实验结果表明:当混拼的羟丙分散体使用溶剂BCS,酸值低于8.83 mg KOH/g,羟丙分散体/羟丙乳胶质量比例为5︰5时得到的水性羟基树脂相容性最佳,综合性能最优;涂料配方中以DPnB和PM作为成膜助剂,搭配Coapur XS-83为增稠剂时制备的水性2KPU涂料具备优异的机械性能,且活化期长,干燥速度快。Fast-drying waterborne 2K-PU coatings with long activation period were prepared by exploring the ratio of hydroxypropyl dispersion to hydroxypropyl latex,the type and amount of film-forming additives and thickeners.The experimental results show that when the mixed hydroxypropyl dispersion uses solvent BCS,the acid value is less than 8.83 mg KOH/g,and the ratio of hydroxypropyl dispersion/hydroxypropyl latex is 5∶5,the waterborne hydroxyl resin obtained has the best compatibility and comprehensive performance.The waterborne 2K-PU coatings prepared with DPnB and PM as film-forming additives and Coapur XS-83 as thickener in the coatings formulation have excellent mechanical properties,long activation period and fast drying speed.

关 键 词：水性双组分聚氨酯 长活化期 快干 羟基丙烯酸二级分散体 羟基丙烯酸乳胶 

分 类 号：TQ630.71[化学工程—精细化工]