【摘要】 为了得到低表面自由能的聚氨酯-丙烯酸酯乳胶膜,以2,2,3,4,4,4-六氟丁醇甲基丙烯酸酯(FA)、苯乙烯(St)、丙烯酸丁酯(BA)为单体,在交联聚氨酯溶液(PU)中通过溶液聚合相转化法制得阳离子含氟聚氨酯-丙烯酸酯复合乳液(FPUA).通过FT-IR、TEM、粒径分析及接触角测试对聚合物结构、乳胶粒径及形态、乳胶膜表面性能进行了研究.研究表明,含氟丙烯酸酯的引入使聚氨酯-丙烯酸酯乳胶膜的表面自由能降低50%以上,常温固化的FPUA乳胶膜的表面自由能小于0·0172J·m-2;该复合乳液的粒子形态呈球形,粒径约为220nm.更多还原

【Abstract】 Cationic fluorinated polyurethane-acrylate hybrid dispersions were prepared by the copolymerization of 2,2,3,4,4,4-hexafluorobutyl methacrylate, butyl acrylate and styrene in crosslinked polyurethane acetone solution via phase inversion polymerization in order to obtain polyurethane-acrylate films with low surface free energy. The structure, surface properties, particle size and morphology of FPUA water dispersions were investigated by FT-IR, TEM, submicron particle size analyzer and contact angle measurements respectively. The results showed that the introduction of fluorinated monomer could decrease the surface free energy by more than 50%, and the FPUA films cured at ambient conditions had surface free energy (lower than 0.0172 J·m -2 ).At the same time, the dispersion particle was spherical with particle diameter is about 220 nm.更多还原