文献类型：期刊文献

中文题名：含氟丙烯酸酯乳液及膜表面性能

英文题名：Fluorinated Polyacrylate Emulsion and Surface Properties of Their Films

作者：汪海伟[1];袁荞龙[1];吴树森[1]

机构：[1]华东理工大学材料科学与工程学院,上海200237

年份：2006

卷号：32

期号：6

起止页码：648

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;EI(收录号：2006289997110);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：含氟丙烯酸酯;阴离子乳液;热处理;表面性能

外文关键词：fluorinated acrylate monomer; anionic emulsion; heat process; surface property

摘要：采用半连续滴加预乳化单体与引发剂水溶液的方法制备了平均粒径为120～130 nm的阴离子含氟丙烯酸酯乳液,并研究了含氟丙烯酸酯乳胶膜的表面性能.结果表明：乳胶膜的吸水率随氟单体含量的增大而下降,但氟单体的加入对膜的透湿率影响不大;乳胶膜经120℃处理后其对水的接触角随含氟单体含量的升高而增大,经160℃处理后氟原子在膜表面的富集增加一倍以上,膜表面自由能下降一倍,膜对水的接触角增大4倍,且提高温度可缩短热处理时间;热处理或含氟单体的加入可使丙烯酸酯膜表面粗糙度增加,从而使膜表面的拒水拒油性能提高.
Perfluoro octylacyloxyethyl methacrylate （FA） was synthesized and used in emulsion copolymerization with acrylates. The anionic emulsions of the copolymer were produced by semi continuing feed, and the range of the latex particle was in 120- 130 nm. The surface properties of the latex film formed by casting were studied. The results show that the water absorption of the film is decreased with increasing of FA, but the water permeability of the film is not affected by the addition of the FA. The properties of the fluorinated polyacrylates film can be improved by post-heated. The water contact angle of the film processed at 120 ℃ is enhanced with increasing the content of FA. Furthermore, the enrichment of the fluorinated group on the film surface is increased one more times, if the film is processed at 160 ℃, and the surface free energy of the film can be decreased one more times, the water contact angle of the film surface can also be increased four times. The results of the heat process also show that the heat time can be shortened by increasing the heat temperature. The roughness of the polyacrylates film surface is augmented with addition of the FA and introduction of the heat process. The water-and oil-repellent of the film surface is much improved by fluorine enrichment and roughness increase.