氯醚-丙烯酸酯树脂二级分散体的制备及性能研究  

Preparation and performance study of secondary dispersion of chloroether-acrylic resin

作　　者：董群锋 牛红让 刘传奇 杨立峰 黄勇杰 裴克梅[2] Dong Qunfeng;Niu Hongrang;Liu Chuanqi;Yang Lifeng;Huang Yongjie;Pei Kemei(Zhejiang Tiannu Group Paint Co.,Ltd.,Tongxiang 314505,Zhejiang,China;School of Chemistry and Chemical Engineering,Zhejiang SCI-TECH University,Hangzhou 310018,Zhejiang,China)

机构地区：[1]浙江天女集团制漆有限公司,浙江桐乡314505 [2]浙江理工大学化学与化工学院,浙江杭州310018

出　　处：《中国胶粘剂》2024年第9期62-68,共7页China Adhesives

基　　金：浙江省“尖兵”“领雁”研发攻关计划项目“电子元器件用超高耐电击穿聚合物基涂层材料的制备及产业化”(2022C01221)。

摘　　要：以氯醚树脂为改性树脂,通过溶液聚合方法合成了氯醚-丙烯酸酯树脂二级分散体。然后按照m(氯醚-丙烯酸酯树脂二级分散体)∶m(氨基树脂固化剂)=5∶1的比例制备了双组分水性涂料。探究了溶剂含量、反应温度、中和剂种类和中和度、羟基含量对二级分散体的影响,测试表征了改性树脂的分子结构和分散体的粒径,研究了氯醚-丙烯酸酯树脂水分散体及其双组分烘烤涂料的性能。研究结果表明:氯醚树脂改性丙烯酸树脂溶液的优化制备条件是,反应温度为90~100℃,反应时间为5 h,溶剂为丙二醇丁醚及乙二醇丁醚(含量为水分散体总质量的11%左右),引发剂为BPO,HPA作为交联功能单体;在最佳的合成条件下制备了氯醚树脂改性的丙烯酸酯水分散体,改性水分散体外观为乳白色泛蓝光,固含率约为48%,黏度为3 015 mPa·s,平均粒径为185 nm左右,(50±2)℃/7 d的条件下贮存性稳定;与市售的羟基丙烯酸水分散体相比,本文制备的氯醚-丙烯酸酯树脂分散体的漆膜性能更优异。The secondary dispersion of chloroether-acrylic resin was synthesized by solution polymerization method using chloroether resin as a modified resin.Then,the two-component water-based coating was prepared in a ratio of m(chlorinated ether-acrylic resin secondary dispersion):m(amino resin curing agent)=5:1.The effects of solvent content,reaction temperature,neutralizer type and neutralization degree,and hydroxyl content on the secondary dispersion were explored.The molecular structure of the modified resin and the particle size of the dispersion were tested and characterized.The properties of chloroether-acrylic resin aqueous dispersion and its twocomponent baking coating were studied.The research results showed that,the optimized preparation conditions for chloroether resin modified acrylic resin solution were the reaction temperature of 90−100℃,the reaction time of 5 hours,solvents of propylene glycol butyl ether and 2-butoxyethanol(with the content of about 11%of the total mass of the aqueous dispersion),initiator of BPO,and HPA as crosslinking functional monomer.Under the optimal synthesis conditions,the chloroether resin modified acrylic ester aqueous dispersion was prepared.The modified aqueous dispersion had a milky white appearance with blue light,the solid content of about 48%,the viscosity of 3015 mPa·s,the average particle size of about 185 nm,and stable storage at(50±2)℃/7 days.Compared with commercially available hydroxy acrylic acid aqueous dispersion,the coating film properties of the chloroetheracrylic resin dispersion prepared in this article were more superior.

关 键 词：氯醚树脂 改性 丙烯酸酯树脂 二级分散体 性能 

分 类 号：TQ630.7[化学工程—精细化工] TQ430.4