水性超支化聚氨酯丙烯酸酯的合成及性能研究  

The synthesis and properties of water-soluble hyperbranched polyurethane acrylate

作　　者：肖文清[1] 周新华[1] 李晶[1] 蒋旭红[1] 涂伟萍[2] 

机构地区：[1]仲恺农业工程学院化学化工学院,广州510225 [2]华南理工大学化工所,广州510640

出　　处：《化工新型材料》2011年第6期78-80,共3页New Chemical Materials

基　　金：广东省自然科学基金(8451022501000530)

摘　　要：以TDI、HPA、丁二酸酐、超支化聚酯为原料,合成了一种新型可紫外光固化的水性超支化聚氨酯丙烯酸酯,用FT-IR跟踪研究了合成过程基团的变化。测试了超支化预聚体水溶液粒径,结果表明该粒径随丁二酸酐含量的增加而减小。对固化膜的力学性能测试和热重分析测试结果表明,随着超支化聚氨酯丙烯酸酯中端丙烯酸酯基含量的增加,固化膜的热性能和力学性能均有提高。A kind of novel water-soluble hyperbranched polyurethane acrylate（WHPUA） was synthesized based upon the raw materials of toluene 2,4-diisocyanate（TDI）,hydroxypropyl acrylate（HPA）,succinic anhydride（SA） and hyperbranched aliphatic polyester（HBPE）.The transformations of different groups were characterized using Fourier Transform Infrared（FT-IR） during the synthesis process.Dynamic light scattering measurements showed that the particle size in the dispersions decreased with increasing SA content in thepolymers.The thermal stability and physical properties of the UV-curable films of the water-soluble hyperbranched polyurethane acrylates were measured.The results showed that both the thermal stability,flexility and the pencil hardness of the cured coatings increased with increasing acrylate group content in the polymers.

关 键 词：超支化聚氨酯丙烯酸酯 水性树脂 紫外光固化 

分 类 号：TQ633[化学工程—精细化工]