摘要
采用常规溶剂聚合水分散法,通过对聚合物中羧基含量的探讨,制备了一种粒径可控的高光泽耐候水性含氟树脂,该树脂不含溶剂,稳定性好。含氟链段的引入极大地提高了树脂涂膜的水、油接触角,水接触角>105°,油接触角>40°。同时涂膜耐溶剂擦拭性好,MEK(甲乙酮)擦拭100次外观无变化,涂膜60°初始光泽>90,人工辐射暴露紫外老化(QUVb)3000h后清漆光泽保持率>85%,特别适用于制备具有高光泽和耐紫外光老化要求的罩光清漆,应用于户外设备、高铁等领域。
Researching on influence of -COOH contains in polymer,a particle size controllable waterborne fluorine contained high gloss and weather resistant resin has been prepared by using normal solvent polymerization and water dispensation method. The resin was solvent-free and stable. Water and oil contact angle were greatly improved by introducing fluorine-containing chain,its water contact angle higher than 105° and its oil contact angle higher than 40°. At the same time,and the coating film shows good solvent resistance,and no appearance changing was observed after 100 times abrasion with MEK. The 60° gloss of the coating film is higher than 90,and its varnish gloss retention is higher than 85% even after 3 000 hours of QUVb test. The prepared resin is suitable for preparation of varnish for those need both high gloss and good UV aging resistance application,such as outdoor equipment,highspeed rail and other fields.
作者
曽鑫
南晋一
朱文旭
Zeng Xin;Minami Shinichi;Zhu Wenxu(Daikin Fluorochemicals(China)Co.,Ltd.,Shanghai Minhang Branch,Shanghai,200040,China)
出处
《上海涂料》
CAS
2019年第4期14-18,共5页
Shanghai Coatings
关键词
高光泽
耐候
水性含氟树脂
high gloss
weather resistant
waterborne fluorine contained resin
