有机硅消泡剂对多彩涂料体系彩点的影响探究  

Study on the Effect of Silicone Defoaming Agents on Color Spots in Colorful Coatings System

作　　者：田新阳 邱奉玲 查纯喜 Tian Xinyang;QIU Fengling;Zha Chunxi(Asia Paint(Shanghai)Co.,Ltd.,Shanghai 201700,China)

机构地区：[1]亚士漆(上海)有限公司,上海201700

出　　处：《上海涂料》2023年第2期14-19,共6页Shanghai Coatings

摘　　要：相较于非有机硅消泡剂,有机硅消泡剂的消泡能力更强。但是聚醚有机硅氧烷会与锂皂石反应,引入阳离子,使锂皂石层间距增加,使得锂皂石反应活性发生改变,同时不同结构的聚醚有机硅消泡剂自身水解稳定性也大不相同,进而对多彩涂料彩点状态又会产生不同程度的影响。通过对比有机硅消泡剂以及非有机硅消泡剂在多彩体系中对高速分散的基料的消泡能力以及即时喷涂、热贮后喷涂对比板面效果以及彩点变化程度,探究多彩体系中有机硅消泡剂与非有机硅消泡剂对彩点的影响,验证了现有市面上不同结构的聚醚有机硅消泡剂均会对多彩涂料中彩点造成不同程度的影响。Compared with non-silicone defoamers,defoaming ability of organic silicon defoamers is stronger.But the polyether organic siloxane can react with the hectorite an dthe cationic is introduced,which makes hectorite layer spacing increase and changes reactivity of hectorite.At the same time the hydrolysis stabilities of polyether silicone defoamers with different structure are different,which will has effect on the state of color points in colorful coatings.Through comparing defoaming ability of rapid dispersi on of binders,plate effect after instant spraying and hot storage spraying,and change degree of color points,the effects of non-silicone defoamers and organic silico n defoamers in colorful systems on color points were studied.Iwta s verified that polyether silicone defoamers with differen t structures in the market will have varying degrees of impact on the color spots in colorful coatings.

关 键 词：聚醚有机硅氧烷 锂皂石 彩点 稳定性 水解 

分 类 号：TQ635.5[化学工程—精细化工]