无溶剂阴离子聚氨酯/丙烯酸酯乳液的制备及其膜性能研究  

Research on the preparation of solvent-free anionic polyurethane-acrylate emulsion and its film performance

作　　者：费贵强 朱科[1] 王成俊 沈一丁[1] 王海花[1] 陈宗明[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 [2]陕西延长石油(集团)有限责任公司研究院,陕西西安710075

出　　处：《功能材料》2013年第13期1956-1959,1963,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50973057);陕西省青年基金资助项目(2010JQ6012);陕西省教育厅专项资助项目(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,以异佛尔酮二异氰酸酯(IPDI)、聚己内酯二元醇(PCL)、二羟甲基丁酸(DM-BA)、甲基丙烯酸羟乙酯(HEMA)、甲基丙烯酸缩水甘油酯(GMA)、甲基丙烯酸甲酯(MMA)和丙烯酸丁酯(BA)等为主要原料制备得到了无溶剂阴离子聚氨酯-丙烯酸酯(WPUA)复合乳液,并系统地研究了n(NCO)/n(OH)(R值)、亲水扩链剂DMBA和硬单体MMA的用量对WPUA乳液及其膜性能的影响。结果表明,WPUA乳胶粒呈核-壳结构,当R=1.2,m(DMBA)=3.1%,m(MMA)=26.6%时,所得的WPUA乳液粒径较小且分布窄,平均粒径为98.98nm,乳胶膜呈现良好的物理机械性能,拉伸强度为17.02MPa,断裂伸长率为109%,吸水率低至6.9%。Solvent-free anionic polyurethane-acrylate emulsion was prepared by in-situ polymerization with isophorone disocyanate（IPDI）,polycaprolactone diols（PCL）,2,2-dimethylolbutyric acid（DMBA）,2-hydroxyethyl methacrylate（HEMA）,glycidyl methacrylate（GMA）,methyl methacrylate（MMA）,butyl acrylate（BA） as raw materials.Simultaneously,effects of n（NCO）/n（OH）（R value）,content of hydrophilic chain extender（DMBA） and hard-monomer（MMA） on properties of the WPUA emulsion and its films were systematically studied.It was found that the WPUA emulsion particles presented the core-shell structure,and the average particle size was 98.98nm with narrow particle size distribution when R=1.2,m（DMBA）=3.1%,m（MMA）=26.6%.Furthermore,the emulsion film was endowed with excellent mechanical property that the tensile strength was 17.02MPa,the elongation at break was 109% and the water absorption was 6.9%.

关 键 词：无溶剂聚氨酯-丙烯酸酯 原位聚合法 阴离子 乳胶膜 

分 类 号：TQ630.7[化学工程—精细化工]