PVA共混改性磺酸盐型紫外光固化水性聚氨酯的制备及性能  

Synthesis and characterization of sulphonate type waterborne UV-curable polyurethane modified by poly(vinyl alcohol)through blending method

作　　者：李小瑞[1] 王东[1] 费贵强 王海花[1] 范洁[1] 

机构地区：[1]陕西科技大学化学与化工学院,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2016年第1期77-81,共5页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(51373091;21204046);教育部留学回国人员科研启动基金项目(1707);陕西省科技厅科学技术研究发展计划项目(2013KJXX-77);陕西省教育厅重点实验室科研计划项目(13JS018);陕西省教育厅专项科研计划项目(2010JQ440)

摘　　要：以异佛尔酮二异氰酸酯(IPDI)、磺酸型聚酯多元醇(BY3301)、季戊四醇三丙烯酸酯(PETA)为主要原料,二羟甲基丁酸(DMBA)作为辅助亲水扩链剂,采用丙酮法合成了磺酸盐紫外固化水性聚氨酯(UV-SWPU),再将其与聚乙烯醇(PVA)溶液机械共混制得了UV-SWPU/PVA共混乳液.采用了红外光谱和X射线衍射表征了聚合物结构和结晶性能,通过动态光散射仪、扫面电镜等测试方法研究了乳液粒径、截面形貌等,结果表明成功制备了UV-SWPU/PVA共混乳液;随着PVA含量的增高,胶膜结晶性、力学性能均提高;乳液粒径也随之增大,且分布系数没有明显变化,表明两者相容性很好.Sulphonate type waterborne UV-curable polyurethane（UV-SWPU）was prepared by acetone method using isophorone diisocyanate（IPDI）,sulphonate type polyester polyol（BY3301）,pentaerythritol triacrylate（PETA）as main materials,dimethylolbutyric acid as hydrophilic chain extender.UV-SWPU/PVA blend emulsion was prepared by the UV-SWPU mix with polyvinyl alcohol（PVA）solution,the structure and crystallization properties of blend films were characterized by infrared spectrum and X-ray diffraction.Through dynamic light scattering instrument,scanning electron microscopy research the emulsion particle size and morphology sectional.The results showed that a series of UV-SWPU/PVA blend emulsions were prepared successfully.With the content of PVA increasing,crystallinity and the mechanical properties of the blend films increased;emulsion particle size also increased,but the distribution coefficient didn′t change much,which showed good compatibility between UV-SWPU and PVA.

关 键 词：紫外光固化 聚氨酯 聚乙烯醇 共混 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业] TQ630.7