含氟丙烯酸酯改性水性聚氨酯纳米复合乳液制备及性能研究  

Preparation and study of aqueous polyurethane nano-composite emulsion modified by flouring-containing acrylate

作　　者：祝阳[1] 吕满庚[1,2] 孔中平 顾建惠 常东亮[1,2] 

机构地区：[1]中国科学院嘉兴中心应用化学分中心,浙江嘉兴314006 [2]浙江禾欣实为集团股份有限公司,浙江嘉兴314012

出　　处：《功能材料》2007年第A09期3520-3522,共3页Journal of Functional Materials

基　　金：浙江省重点工业资助项目（2006C21096）;嘉兴市科技计划资助项目（2005AZ3032）

摘　　要：用含氟丙烯酸酯改性水性聚氨酯，乳液共聚法获得具有核壳结构的水性PUA纳米复合乳液，详细考察了PU／PA质量比、HEA用量、DMPA用量等对乳液涂膜性能的影响；实验结果表明该乳液粒径在100nm左右，乳液涂膜具有良好的力学性能，当含氟单体含量为5％时，其表面自由能为20．8mJ·m^-2，耐水性能也得到显著提高。aqueous polyurethane was modified by flouring-containing acrylate. Core-shell type PUA Nano-composite emulsion was obtained by emulsion copolymerization. The effects of PUA films performance were discussed in details by such factors as mass ratio of polyurethane to polyacrylate, dosages of HEA and DMPA. The results of experiments show that the radius of the PUA Nano-composite emulsion is about 100mn. The films have nice mechanics performances. The surface free energy was 20.8 mJ·m^-2 when the flouring-containing acrylate mass ratio was 5%. And the water-resistance properties of the PUA films were dramatically improved.

关 键 词：水性聚氨酯 含氟丙烯酸酯 乳液聚合 纳米复合乳液 

分 类 号：TQ423[化学工程]