综述了阴离子型水性聚氨酯亲水基团的研究状况。亲水基团的引入方式有多种,可以通过小分子扩链剂引入,也可通过含有离子基团的聚酯或聚醚引入,或在水性聚氨酯的分子结构中同时引入磺酸盐和羧酸亲水基团,形成混合内乳化剂,可提高水性聚氨酯的耐水性和其他物理性能,降低溶剂的使用量。 The research status of anionic waterborne polyurethane hydrophilic groups is reviewed. The introduction of hydrophilic groups in a variety of ways, can be introduced by small molecule chain extender, but also by the introduction of ionic groups containing polyester or polyether, or in the molecular structure of water-based polyurethane and sulfonate carboxylate introduced Acid hydrophilic groups to form a mixed emulsifier to improve water resistance and other physical properties of waterborne polyurethane and to reduce the amount of solvent used.