双组分丙烯酸阴极电泳涂料用乳液的研制  

The Preparation of Emulsion for Two-Component Acrylic Cathodic Electrodeposition Coating

作　　者：顾丽萍[1] 陈卫东[1] 

机构地区：[1]中海油常州涂料化工研究院,江苏常州213016

出　　处：《涂料工业》2013年第12期25-29,共5页Paint & Coatings Industry

摘　　要：采用自由基溶液聚合法,以甲基丙烯酸缩水甘油酯(GMA)、甲基丙烯酸羟乙酯(HEMA)、丙烯酸异辛酯(EHA)、苯乙烯(St)、甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)等单体合成了丙烯酸阴极电泳涂料用树脂。研究了乳液状态、涂膜外观及性能等,实验结果表明:GMA用量为14%,以偶氮二异丁腈为引发剂,可制得稳定的乳液,pH在5.0左右;与自制水性颜料浆配套使用,可得到平整光滑的涂膜,其附着力为0级,20°光泽可达80以上,耐盐雾超过200 h,人工加速老化超过800 h(保光率≥70%),具有优异的耐候性与装饰性。This paper described the synthesis of emulsion for two - coponemt acrylic ca- thodic electrodeposition coating compositional via free - radical solution polymerization by using glycidyl methacrylate （ GMA）, 2 - hydroxyethyl methacrylate （ HEMA）, 2 - ethylhexyl acry- late （EHA）, styrene （St）, methyl methacrylate （MMA） and butyl acrylate （BA）, etc. as monomers. The state of emulsion, the surface appearance and other properties of the electro- deposition primer films were also studied. The results indicated that the emusion was stable and the prepared coatings formulaed with homemade waterborne pigment paste exhibited an u- niform and homogeneous surface with the adhesion of grade 0, gloss over 80, salt spray over 200 hours, accelerated weathering test over 800 hours （gloss retention remains 70% ）, when the amount of GMA was 14%, azodiisobutyronitrile （AIBN） was used as initiator, and the pH value of the emulsion was about 5.0. Above all, the coatings showed an excellent weather- ability and decorative property.

关 键 词：装饰性 丙烯酸 阴极电泳 双组分涂料 

分 类 号：TQ635.9[化学工程—精细化工]