通过阴离子自乳化法成功合成了水性聚氨酯丙烯酸酯（WPUA）低聚物，然后用WPUA低聚物、二缩三丙二醇二丙烯酸酯（TPGDA）、甲基丙烯酸六氟丁酯（HFBMA）、光引发剂（Darocur 1173）制备出了不同HFBMA含量的紫外光固化水性含氟聚氨酯丙烯酸酯（UV-WFPUA）固化膜。用FT-IR、SEM对UV-WFPUA固化膜结构、形貌进行表征，并考察了HFBMA对水性聚氨酯固化膜耐水性、力学性能、耐热性等性能的改善效果。结果表明，引入HFBMA后，水性聚氨酯固化膜的耐水性、耐热性以及力学性能都有明显提高。当HFBMA质量分数在10%时，凝胶率为93.24%、吸水率为4.32%、水接触角为83.8°、铅笔硬度为3H、拉伸强度为5.08 MPa、断裂伸长率为16.14%，UV-WFPUA固化膜综合性能最佳。

Waterborne polyurethane acrylate (WPUA) oligomer is successfully synthesized via anionic self-emulsification method, and then UV-curable waterborne fluorine-containing polyurethane acrylate (UV-WFPUA) cured films with different hexafluorobutyl methacrylate (HFBMA) contents are prepared from WPUA oligomer, tripropylene glycol diacrylate (TPGDA), HFBMA and Darocur1173 photo initiator.The structure and morphology of UV-WFPUA cured films are characterized by means of FT-IR and SEM, and the effects of HFBMA on the water resistance, mechanical properties, heat resistance and other properties of the films are investigated.Research results show that water resistance, heat resistance and mechanical properties of UV-WFPUA cured films have significantly been improved after the addition of HFBMA.As HFBMA content is 10 wt%, the gel fraction of the films reaches 93.24%, the water absorption reaching 4.32%, the water contact angle 83.8°, the pencil hardness 3H, the tensile strength 5.08 MPa, and the elongation at break 16.14%, showing the best overall performance.

王杰(1996-),男,硕士生,研究方向为水性聚氨酯高分子材料,1358667375@qq.com