有机硅改性丙烯酸酯分散体的制备及性能研究  

Preparation and Properties of Silicone Modified Polyacrylate Dispersions

作　　者：郭佳美 韩卓洒 杨金磊 李婷婷 刘德川 向嘉杰 冯炯皓 张胜文 张天彬 Guo Jiamei;Han Zhuosa;Yang Jinei;Li Tingting;Liu Dechuan;Xiang Jiajie;Feng Jionghao;Zhang Shengwen;Zhang Tianbin(School of Chemistry and Materials Engineering,Jiangnan University,Wuxi,Jiangsu 214122,China;Tianchang Yongtai Sealing Material Co.,Ltd.,Tianchang,Anhui 239300,China)

机构地区：[1]江南大学化学与材料工程学院,江苏无锡214122 [2]天长市永泰密封材料有限公司,安徽天长239300

出　　处：《涂料工业》2023年第8期62-68,共7页Paint & Coatings Industry

摘　　要：为了提高水性功能涂层的耐沾污性,通过溶液聚合合成有机硅改性丙烯酸酯(SiPA)树脂,经中和、乳化制备水性有机硅改性丙烯酸酯分散体(WSiPA),并将其与水性固化剂(异氰酸酯及氮丙啶固化剂)复配制备水性有机硅改性丙烯酸酯胶膜及涂层。重点研究了固化剂的引入方式及种类对胶膜及涂层性能的影响。结果表明:在SiPA树脂中和乳化阶段引入复合固化剂制备的胶膜拉伸性能优异、吸水率较低(23.9%);且涂层具有较强的疏水性(水接触角为110.8°)、耐溶剂擦拭性以及较好的耐沾污性。To improve the anti-soiling resistance of water-based functional coatings,the water-borne silicone modified acrylate(SiPA)resin was prepared by solution polymerization,and dispersions(WSiPA)were obtained after neutralization and emulsification.Then,the WSiPA was combined with water-based curing agent(isocyanate and aziridine curing agent)to obtain water-borne silicone modified acrylate films and coating.The effects of incorporation method and types of the curing agents on the properties of cured films and coatings were mainly investigated.The results showed that the film obtained when curing agents were incorporated during neutralization and emulsification process had high tensile property and low water absorption(23.9%),and the correspondent coating had strong hydrophobicity(water contact angle of 110.8°),solvent wiping resistance and better soiling resistance.

关 键 词：有机硅改性 丙烯酸酯分散体 固化涂层 耐溶剂擦拭性 耐沾污性 

分 类 号：TQ637.81[化学工程—精细化工]