GMA改性无溶剂阴离子聚氨酯/丙烯酸酯复合乳液的合成及性能研究  

Synthesis and properties of GMA modified solvent-free anionic polyurethane/polyacrylate composite emulsion

作　　者：费贵强 陈宗明[1] 沈一丁[1] 王海花[1] 朱科[1] 

机构地区：[1]陕西科技大学化学化工学院,教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《功能材料》2013年第9期1257-1260,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50973057);陕西省青年科学基金资助项目(2010JQ6012);陕西省教育厅专项基金资助项目(2010JQ440);陕西科技大学学科人才培养资助项目(XSG2010011)

摘　　要：采用原位聚合法,制备得到了无溶剂阴离子聚氨酯/丙烯酸酯(WPUA)复合乳液,系统地研究了GMA用量对WPUA乳液及其膜性能的影响。结果表明,当m(GMA)=10.2%时,WPUA乳液粒径较小且分布窄,平均粒径为141.1nm,且聚合物具有良好的热稳定性,涂膜呈现良好的耐水性和耐醇性,吸水率低至6.85%,涂膜硬度达到2H,附着力达到0级,耐冲击合格。Solvent-free anionic polyurethane/polyacryiate composite emulsion was prepared by in-situ polymerization Simultaneously, effects of content of GMA on properties of the WPUA emulsion and its films were system atically studied. It was found that the average particle size of the WPUA emulsion was 141. lnm with narrow particle size distribution when rn （GMA）： 10.2%. Furthermore, the film was endowed with excellent thermal stability, water resistance and durability to ethanol, and the water absorption was 6.85 %, the pencil hardness of the film reached 2H,adhesive force grade reached the 0 level,the impact resistance was up to GB/T1732-93.

关 键 词：原位聚合法 无溶剂 阴离子 聚氨酯 丙烯酸酯 甲基丙烯酸缩水甘油酯 

分 类 号：TQ630.7[化学工程—精细化工]