健康安全环境
第46卷第6期 2016年6月
涂料工业
PAINT&COATINGS INDUSTRY
Vol.46No.6 Jun.2016
氟改性UV固化超支化水性聚氨酯的制备与性能研究
孙常青，姚伯龙”，高旭瑞，王利魁，郑春森，李洪萍（江南大学化学与材料工程学院，江苏无锡214122）
二（）三（O）（）元醇（PCDL）、含氟二元醇、二羟甲基丁酸（DMBA）、季戊四醇三丙烯酸酯（PETA）为主要原料合成一NCO半封端的聚氨酯，将六羟基多元醇加人到聚氨酯中，制备了氟改性UV固化超支化水性聚氨酯（FWPU）。采用光学接触角、纳米粒度仪、电子拉力机、原子力显微镜等对涂膜的结构与性能进行了测试。研究了含氟二元醇添加量对涂膜疏水性、力学性能、硬度、热稳定性等的影响。结果表明：随着含氟二元醇的加入，乳液粒径逐渐增大、分布变宽，涂膜接触角增加、吸水率大幅降低、热稳定性增强、拉伸强度大幅度增大、硬度达到4H。当含氟二元醇含量为8%时，涂膜的综合性能最佳。
关键词：含氟二元醇；UV固化；超支化；水性聚氨酯；改性中图分类号：TQ630.4文献标识码：A
文章编号：0253-4312(2016)06-0034-09
PreparationandProperties of UVCurableHyperbranched
WaterbornePolyurethaneModifiedbyFluorine
Sun Changqing,Yao Bolong, Gao Xurui, Wang Likui, Zheng Chunsen, Li Hongping(School of Chemical and Material Engineering,Jiangnan University,Wuxi, Jiangsu 214122,China)
Abstract: A hexahydroxy polyol was synthesized via copolymerization of HDI trimer(HDT) and diethanolamine (DEOA). A fluorinated diol was synthesized via copolymerization of isophorone disocyanate (IPDI)， perfluorohexyl ethyl alcohol （TEOH-6)and trimethylol propane(TMP).A NCO-terminated polyurethane prepolymer was prepared from isophorone disocyanate （IPDI)，polycarbonate glycol （PCDL),fluorinated diol,2,2-dimethylol butanoic acid（DMBA)and pentaerythritol triacrylate（PETA)as the main materials.A fluor-inated diol modified hyperbranched UV curable waterborne polyurethane(FWPU)was pre-pared via copolymerization of hexahydroxy polyol and polyurethane prepolymer, The structure and properties of the cured film were characterized by optical contact angle measuring instru-ments, particle size analyzer, electronic tensile machine and atomic force microscopy. The in-fluence of different content of fluorinated diol on the water resistance,mechanical property, hardness and thermal resistance of the cured film was also investigated. The results indicated that the increasing addition of fluorinated diol resulted in the increase of emulsion particle size
【基金项目］江苏省自热科学基全（批准号；BK20130144）；国家自然科学基金（批准号：51302109)。
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