含氟聚氨酯-丙烯酸酯核壳乳液的制备及性能

以甲基丙烯酸羟乙酯封端的水性聚氨酯作为大分子单体，与甲基丙烯酸甲酯及甲基丙烯酸全氟烷基乙基酯在乳液中进行自由基共聚合，制得具有核壳结构的水性含氟聚氨酯丙烯酸酯乳液。通过激光粒度分析、FTIR、DSC、TGA、表面性能测试、力学性能测试等表征手段，对乳液及其乳胶膜的结构和性能进行了检测，另外，还着重探讨了甲基丙烯酸全氟烷基乙基酯的含量对乳胶膜性能的影响。结果表明：所制得的材料具有预期结构，并且表面能及吸水率低，力学性能优异。氟单体的引入使乳胶膜的表面能大大降低，而力学性能明显提高。

Synthesis and Properties of Fluorine-Containing Polyurethane-Acrylate Core-Shell Emulsion

Fluorine containing polyurethane acrylate core shell emulsions were prepared by radical copolymerization of MMA, FA and HEMA endcapped PU macromonomer. The structures and properties of FPUA emulsions and latex films were characterized by laser particle size analyzer, FT-IR, DSC, TGA, contact angle meter and mechanical property testing. Results show that fluorine containing polyurethane acrylate (FPUA) core shell emulsions have been prepared successfully, and the latex films have low surface energy, low water absorption and excellent mechanical properties. With the adding of FA, surface properties are decreased greatly, while mechanical properties are increased obviously.