摘要
水性聚氨酯是一种重要的聚合物。采用丙烯酸酯单体作为聚氨酯预聚体降黏的溶剂,扩链、中和并加水乳化后再将丙烯酸酯乳液聚合,制备出互穿网络结构水性聚氨酯丙烯酸酯复合乳液。复合乳液制备成胶膜后考察其力学性能,探究丙烯酸酯与聚氨酯不同比例,以及不同种类丙烯酸酯用量对胶膜力学性能的影响。结果表明,采用此方法制备所得胶膜力学性能优异,最佳配方下的胶膜拉伸强度达45.17 MPa、断裂伸长率达400.6%、杨氏模量达332.70 MPa。
Waterborne polyurethane is an important polymer.In this study,acrylate monomer was used as the solvent to reduce the viscosity of polyurethane prepolymer,which was chain-expanded,neutralized,emulsified with water,and then polymerized with acrylate monomers.The mechanical properties of the film were investigated after the composite emulsion was prepared,the ratio of acrylate to polyurethane and the effects of different acrylate on the mechanical properties of the film were investigated.The results show that the mechanical properties of the film prepared by this method are excellent.The tensile strength of the film is 45.17 MPa,the elongation at break is 400.6%,and the Young's modulus is 332.70 MPa.
作者
李明泽
杜淼
潘鹏举
单国荣
LI Minge;DU Miao;PAN Pengu;SHAN Cuorong(State Key Laboratory of Chemical Engineering,College of Chemical and Biological Engineering,Zhejiang University,Hangzhoou 310058,China;Department of Polymer Science and Engineering,Zhejiang University,Hangzhou 310058,China;Institute of Zhejiang University-Quzhou,Quzhou 324000,China)
出处
《高校化学工程学报》
北大核心
2025年第2期333-340,共8页
Journal of Chemical Engineering of Chinese Universities
基金
国家自然科学基金面上项目(52173024)
山西浙大新材料与化工研究院研发项目(2022SZ-TD008)。
关键词
聚合物
水性聚氨酯
无溶剂
丙烯酸酯
力学性能
polymer
waterborne polyurethane
solvent-free
acrylic ester
mechanical property
