高固含量高强度水性聚氨酯乳液的合成及性能研究  

Study on Preparation and Properties of Waterborne Polyurethane with High Solid Content and High Strength

作　　者：王家儒 洪江徽 宋远庆 叶恒 李震[1] 李洁华[1] 谭鸿[1] WANG Jia-rui;HONG Jiang-hui;SONG Yuan-qing;YE Heng;LI Zhen;LI Jie-hua;TAN Hong(College of Polymer Science and Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学高分子科学与工程学院,四川成都610065

出　　处：《塑料工业》2018年第8期22-26,94,共6页China Plastics Industry

基　　金：国家自然科学基金项目资助(51733005)

摘　　要：以聚酯二元醇(PBA)、异佛尔酮二异氰酸酯(IPDI)、六亚甲基二异氰酸酯(HDI)、1,4-丁二醇(BDO)、乙二胺基乙磺酸钠(AAS)为主要原料,分别合成了高亲水性的小粒径水性聚氨酯乳液(WPU1)和低亲水性的聚氨酯预聚物(WPU2)。以WPU1乳液乳化WPU2得到了固含量高达70%的水性聚氨酯乳液WPU3,其成膜后的力学性能优异,拉伸强度最高超过50 MPa,胶膜的吸水率较低,有良好的耐水性。A series of waterborne polyurethane dispersions（ WPU1） with high content of hydrophilic group and the polyurethane（ WPU2） prepolymer with low hydrophilicity were prepared by polyester diol（ PBA）,isophorone diisocyanate（ IPDI）,hexamethylene diisocyanate（ HDI）,1,4-butanediol（ BDO）,N-（ 2-aminoethyl）-2-aminoethane sulphonic sodium（ AAS）, respectively. Then WPU1 were used to emulsify WPU2 prepolymer and the waterborne polyurethane emulsions（ WPU3） with 70% solid content was obtained. The films of WPU3 behaved with excellent mechanical properties with the tensile strength as high as50 MPa. All of the films of WPU3 had low water absorption,indicating good water resistance.

关 键 词：高固含量 水性聚氨酯 高强度 磺酸 

分 类 号：TQ316.6[化学工程—高聚物工业]