聚氨酯／聚丙烯酸酯复合乳液及其相容性  

Preparation and Compatibility of Polyurethane/Polyacrylate Latex

作　　者：张剑秋[1] 王捷[1] 俎建华[1] 庄菁[2] 许燕侠 

机构地区：[1]上海大学环境与化学工程学院,上海201800 [2]上海交通大学化学化工学院,上海201800 [3]亨斯迈聚氨酯(中国)有限公司,上海201800

出　　处：《高分子材料科学与工程》2009年第5期5-7,11,共4页Polymer Materials Science & Engineering

基　　金：上海市重点学科第二期(T105)资助;上海市教委项目(6AZ108)资助

摘　　要：用N-甲基二乙醇胺、甲苯二异氰酸酯、聚异丙二醇等制得了水性的阳离子聚氨酯(PU),再和含丙烯酸等丙烯酸酯类混合单体聚合反应制得稳定的聚氨酯/聚丙烯酸酯(PUA)乳液。将PUA膜与PU的差谱覆盖在聚丙烯酸酯(PA)红外图谱上,在3408.57cm-1和1582.86cm-1处出现了新的峰,表明漆膜分子内形成了新的相互作用。DSC测得漆膜只有一个玻璃化转变温度,说明漆膜是共混相容的离聚物。比较了不同AA/MDEA摩尔(叔氨基和羧基)比值下的乳液粒径、黏度以及漆膜的各项力学性能,比值在0.8:1附近时,漆膜的热稳定性较好,各项力学性能均满足技术性能要求。MDEA, TDI, PPG and so on were used in the preparation of cationic waterborne polyurethane which synthesized stable polyurethane/polyacrylate（PUA） latex with crylic acid and acrylate monomers. PA FT-IR was covered with PUA membrane and PU FT-IR difference spectrometry. New IR spectra which showed new force formed in PUA membrane was found at 3408.57 cm^-1 and 1582.86 cm^-1. Also, DSC was used to detect PUA membrane has only one glass transition temperature, so PUA membrane is compatibility ionomer blends. The interaction effect of the two opposite charge groups （tertiary amine and carboxyl） formed the ionic group in the product. The results show the ionic group existed in the system improves the compatibility of the blending. From the relation during the emulsion viscosity, Tg of the film and the film mechanical performance as also the ratio of AA/ MDEA, PUA latex thus obtained has good film forming property and stability.

关 键 词：聚氨酯.聚丙烯酸酯 阳离子聚氨酯 相容性 离聚物 

分 类 号：TQ316.334[化学工程—高聚物工业]