阳离子丙烯酸/醇酸树脂水性涂料的性能研究  

Propertiesof waterborne cationic acrylic / alkyd coating

作　　者：费贵强 税小军[1] 沈一丁[1] 王海花[1] 贾贵玉 郭丽媛[1] 侯婧莉 

机构地区：[1]陕西科技大学化学与化工学院,教育部轻化工助剂化学与技术重点实验室,西安710021

出　　处：《功能材料》2015年第10期10042-10046,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(21204046,51373091);陕西省中国科学技术研究发展计划资助项目(2013KJXX-77);陕西省教育厅重点实验室项目资助项目(13JS018)

摘　　要：以阳离子丙烯酸/醇酸树脂乳液、钛白粉、分散剂、增稠剂、消泡剂等原料制备一种阳离子丙烯酸/醇酸树脂水性涂料。主要研究了涂料的稳定性、流变行为、热性质、表面形貌和防腐性能,研究表明,分散剂用量为1.5%(质量分数)(占涂料总质量,下同),增稠剂用量为0.9%(质量分数)时,涂料的稳定性最好;在最佳稳定条件下,涂料的流变行为表明涂料具有触变性,有利于涂料的施工和贮存;热重分析表明,涂料的热分解温度为215.3℃,可适用于温度低于200℃的工业环境;防腐性能表明,涂料的腐蚀电流密度为1.076×10-4A/cm2,具有240 h的耐盐雾性能;原子力显微镜表明涂层表面粗糙度为3.893 nm,并呈现出纳米级的凹凸结构。A cationic acrylic / alkyd resin coating was successfully prepared using cationic acrylic / alkyd resin emulsions,titanium dioxide,dispersant,thickener and defoamer as raw materials. The stability,rheological property,thermal property,surface morphology and anti-corrosion property of coating were characterized. The result suggested the stability of coating was best with dispersant dosage of 1. 5wt% and thickener dosage of 0. 9wt%. The result also showed the coating displayed good thixotropic property that favored to storage and bush coating. In addition,the coating could apply to industry under 200 ℃ with the degradation temperature at 5% weight loss of 215. 3 ℃. The anti-corrosion property test suggested the coating showed corrosion current of 1. 076 × 10- 4A / cm2 and exposure in salt spray for 240 h. Meanwhile,the film also showed concavoconvex structure with surface roughness of 3. 893 nm.

关 键 词：水性涂料 醇酸树脂 阳离子 丙烯酸树脂 性能 

分 类 号：TQ630[化学工程—精细化工]