半本体法合成醇溶性聚丙烯酸酯及在快干型涂料中的应用研究  

Study on Application of Alcohol-Soluble Polyacrylate by Semi-Bulk Polymerization in Fast-Dried Coating

作　　者：陈中华[1,2] 穆爱婷[1] 高菲菲[1] 张鸿[1] 

机构地区：[1]华南理工大学材料科学与工程学院材料学系,广州510640 [2]广州集泰化工有限公司,广州510520

出　　处：《涂料工业》2012年第2期66-70,74,共6页Paint & Coatings Industry

基　　金：国家自然科学基金(50973033);广东省/教育部产学研结合项目(2008B090500050)

摘　　要：以丙烯酸丁酯、甲基丙烯酸甲酯、苯乙烯、丙烯酸羟乙酯为单体,以过氧化二苯甲酰为引发剂,工业酒精为溶剂,采用半本体法合成醇溶性的丙烯酸酯聚合物。研究了引发剂种类、引发剂浓度、功能单体用量、软硬单体配比、加料方式对聚合物性能和相应涂料防腐性能的影响。结果表明:选用过氧化二苯甲酰为引发剂,且用量为2%、苯乙烯用量为5%、极性单体用量为10%、m(丙烯酸丁酯):m(甲基丙烯酸甲酯)=1:1时,以半本体法合成的聚合物配制的涂膜在25℃,相对湿度为90%的条件下,表干时间小于10 min,实干小于40 min,综合防腐性能好。With butyl acrylate （ BA ）, methyl methacrylate （ MMA ）, styrene （ St ）, 2 - hydroxyethyl acrylate （HEA） as monomers, benzoyl peroxide（BPO） as initiator,alcohol as solvent, the alcohol -soluble acrylate resin was synthesized by semi - bulk polymerization. Effects of initiator and its concentration, HEA concentra- tion,mass ratio of BA to MMA, feeding methods on the properties of acrylate resin and coating con＇osion re- sistance were investigated. The results indicated that the tack - free dry time was below 10 min and thorough dry time below 40 rain at 25℃ RH 90% ,with good comprehensive corrosion resistance could reach when the BPO was used as initiator at 2%;HEA at 10%;m（BA）：m（MMA） =1：1;St at 5% by use of semi-bulk pelymerization process.

关 键 词：半本体法 醇溶性 快干 防腐 苯乙烯改性 

分 类 号：TQ630.4[化学工程—精细化工]