硅氧烷改性自交联丙烯酸阴极电泳涂料树脂的制备  

Preparation of Self-crosslinkable Acrylic Cathodic Electrodeposition Paint Resins Modified by Organosilicon

作　　者：张凯[1] 黄春保[1] 李金华[2] 张力[2] 

机构地区：[1]黄冈师范学院化学与应用化学学院,中国黄州438000 [2]华南师范大学化学与环境学院,中国广州510631

出　　处：《湖南师范大学自然科学学报》2008年第2期79-83,共5页Journal of Natural Science of Hunan Normal University

基　　金：湖北省教育厅科学技术研究资助项目(07BQ010)

摘　　要：采用自由基聚合法合成了硅氧烷改性自交联丙烯酸阴极电泳涂料树脂.研究了影响改性树脂分散液贮存稳定性、粒径大小及其分布、交联度等性能的主要因素.结果表明,采用一次投料法,聚合温度为85℃时,所得分散液粒径小且分布窄,贮存稳定性好.功能单体的引入提高了涂膜交联度,有机硅氧烷与丙烯酸酯类单体发生了共聚反应,改善了涂膜的耐水性和耐化学品性.Self-crosslinkable acrylic cathodic electrodeposition paint resins modified by organosilicon have been prepared using free polymerization method. In this paper, many effects on the dispersion storage stability, the particle size and distribution of dispersion and the crosslinking degree of the resins are discussed. The experimental results show that using the batch processes, when the polymerization temperature was at 85 ℃, the acrylic resins aqueous dispersion modified by organosilicon is stable and the particle size of the dispersion is minimal. The crosslinking degree of the resins could be improved greatly with incorporation of functional monomers. The organosilicon is copolymerized with acrylic monomers and greatly improved water and chemicals resistance of the films compared with the film based on the pure acrylate coatings.

关 键 词：丙烯酸树脂 阴极电泳涂料 自交联 硅氧烷 改性 

分 类 号：TQ633[化学工程—精细化工] O623.624.1[理学—有机化学]