摘要
以羟基丙烯酸树脂、氨基树脂为成膜物质,复配功能助剂及防锈颜料,开发高性能水性丙烯酸氨基烤漆,考察附着力促进剂、酸催化剂、氨基树脂与丙烯酸树脂质量比及防锈颜料等配方比例对烤漆性能影响。结果表明:(1)附着力促进剂最佳用量为3%(质量分数,后同),能显著增强烤漆附着力,提高涂层铅笔硬度、耐冲击及耐水、耐盐雾等性能;(2)酸催化剂最佳用量为1%,能促进丙烯酸树脂与氨基树脂反应,将烤漆固化温度从150℃降低到135℃;(3)氨基树脂与羟基丙烯酸树脂最佳质量比为1∶5;(4)纳米粒径三聚磷酸铝防锈颜料对烤漆耐盐雾性能影响明显,当其质量分数为5.0%时,烤漆耐盐雾时间最长,达500 h。
High performance waterborne acrylic amino baking coatings were developed with hydroxyl acrylic resin and amino resin as film-forming materials, functional additives and antirust pigments. The effects of adhesion promoter, acid catalyst, amino resin and acrylic resin weight ratio and antirust pigment dosage on the performance of baking coatings were investigated. The results show: 1) the adhesion promoter with the optimum dosage of 3%(weight ratio, the same below) can significantly enhance the adhesion of baking coatings, thus leading to higher pencil hardness, impact resistance, water resistance and salt fog resistance;2) the acid catalyst with the optimum dosage of 1% can promote the reaction between acrylic resin and amino resin and lower the curing temperature from 150 ℃ to 135 ℃;3) the optimum weight ratio between amino resin and hydroxyl acrylic resin is 1∶5;4) nano-sized aluminum triphosphate(ATP) has a significant impact on the salt fog resistance of the baking coatings, and the longest salt fog resistance time up to 500 h is achieved when the ATP dosage is 5.0%.
作者
汪海风
吴春春
陈显群
杨辉
盛建松
傅文明
方竹根
WANG Hai-feng;WU Chun-chun;Chen Xian-qun;YANG Hui;SHENG Jian-song;FU Wen-ming;FANG Zhu-gen(Taizhou Branch of Zhejiang-California International Nanosystems Institute,Taizhou 318000,Zhejiang,China;Research Institute of Zhejiang University-Taizhou,Taizhou 318000,Zhejiang,China;Zhejiang-California International Nanosystems Institute,Zhejiang University,Hangzhou 310058,Zhejiang,China)
出处
《中国涂料》
CAS
2020年第1期30-34,共5页
China Coatings
基金
台州市“500精英计划”项目
台州市领军型创新创业团队项目
浙江省重点研发计划项目(2018C04007).
关键词
水性丙烯酸氨基烤漆
附着力促进剂
酸催化剂
防锈颜料
固化温度
waterborne acrylic amino baking coatings
adhesion promoter
acid catalyst
antirust pigment
curing temperature
作者简介
汪海风(1984–),男,安徽安庆人。副研究员,博士,主要从事水性工业涂料开发研究。
