KH-550/E-44改性水性丙烯酸树脂的合成与性能  

Preparation and Properties of Waterborne Acrylic Resin Modified by KH570/E-44

作　　者：王永贵[1] 吕程程 张慧 张言 谢文龙 夏凤 蔡晓婧 桑瑞 Wang Yonggui;Lv Chengcheng;Zhang Hui;Zhang Yan;Xie Wenlong;Xia Feng;Cai Xiaojing;Sang rui

机构地区：[1]滁州学院材料与化学工程学院,安徽滁州239000

出　　处：《滁州学院学报》2020年第2期36-39,共4页Journal of Chuzhou University

基　　金：安徽省高校自然科学研究一般项目“有机硅环氧改性水性丙烯酸树脂涂料的机理及性能研究”(KJ2017B05);国家级大学生创新创业训练项目“生物基腰果酚改性树脂防锈漆的制备及性能研究”(201910377031);安徽省大学生创新创业训练项目“水性UV固化上光油的研制与性能”(S201910377121)。

摘　　要：先将甲基丙烯酸甲酯、丙烯酸丁酯、丙烯酸接和E-44树脂接枝共聚,然后用硅氧烷KH-550扩链,合成具有亲水性羧基和硅氧烷单元的KH-550/E-44改性水性丙烯酸树脂。采用FTIR、XRD、TGA对接枝产物做了结构表征和热分析。实验表明:KH-550为丙烯酸单体总量的4%,E-44为丙烯酸单体总量的8%的KH-550/E-44改性水性丙烯酸树脂,稳定性好,固化涂膜吸水率为8.1%,铅笔硬度为5H,附着力为1级,在涂料行业具有较好应用前景。The waterborne epoxy modified was prepared by KH-550 and the epoxy-acrylic graft copolymer which was synthesized by E-44,methyl methacrylate,butyl acrylate and acrylic acid.As a result,hydrophilic group and organosilicon unit were incorporated into epoxy molecules and then KH-550/E-44 modified waterborne epoxy resin was produced.The structure of modified waterborne epoxy was characterized by FTIR,XRD and the thermal stability was determined by TGA respectively.The results indicated that when KH-550 is 4%of total acrylic monomer,E-44 is 8%of total acrylic monomer,the waterborne acrylic resin modified by KH550/E-44 was good stability in water,water absorption of cured film was 8.1%,pencil hardness reached 5H,adhesive force was 1,and has good application prospect in paint industry.

关 键 词：水性丙烯酸树脂 环氧树脂 吸水率 KH550 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]