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第54卷第10期 涂料工业 Vol. 54 No. 10
2024年10月 刘银 等:没 子酸酯/改性苯丙防腐转锈乳胶的制备及性能研究 Oct. 2024
PAINT & COATINGS INDUSTRY
子酸酯/改性 丙防腐 胶的制备及性能研究
刘 萍,张光华 ,杜佳 ,陈玮琦,刘瑞 ,侯飞
*
( 西科技大学化学与化工学院, 西省 化工 剂重点实验室,西安710021)
摘 要:为提升乳胶的相容性及防腐性能,以没 子酸(GA)与乙二醇丁醚(BE)为原料合成没
子酸酯(GA-BE)作为转锈剂,采用预乳化-半连续种子乳液聚合法合成有机硅改性苯丙乳胶(SAL-
Si)作为成膜物,制备没 子酸酯/改性苯丙防腐转锈乳胶(GA-BE/SAL-Si)。采用稳定性分析仪测试
乳胶的稳定性,采用中性盐 测试、盐水浸泡测试和电化学分析探究其防腐性,采用 X 射线衍射
(XRD)、X 射线光电子能谱(XPS)、扫描电镜(SEM)和能谱(EDS)分析探讨锈蚀转化前后基体表面形
貌及转锈机理。结果表明:制备的 GA-BE/SAL-Si具有较好的稳定性;在 3. 5%NaCl溶液浸泡下,覆涂
GA-BE/SAL-Si试样的自腐蚀电流密度相较于锈蚀钢降低了 2个数量级,相较于覆涂 GA/SAL-Si试样
降低了 1个数量级,当 GA-BE 添加量为 2. 0% 时,防腐效果最佳;经过 168 h的中性盐 测试及盐水测
试后,对比 GA/SAL-Si 及 GA-BE/SAL 涂膜,GA-BE/SAL-Si 涂膜表现出更佳的防腐性能;GA-BE 结构
中的酚羟基可与锈蚀产物发生 合反应,生成新的 Fe—O—C配位键,达到转锈的作用,配合 SAL-Si,
使涂膜具有良好的防腐和转锈性能。
关键词:转锈剂;没 子酸酯;苯丙乳胶;有机硅改性;防腐转锈乳胶
中图分类号:TQ635. 2 文献标志码:A 文章编号:0253-4312(2024)10-0045-08
doi:10. 12020/j. issn. 0253-4312. 2024-079
Preparation and Performance Study of Gallic Acid Esters/
Modified Styrene-acrylic Anticorrosive Rust Conversion Latex
LIU Yinping,ZHANG Guanghua,DU Jiani,CHEN Weiqi,LIU Ruijun,HOU Feifan
(Shaanxi Key Laboratory of Light Chemical Auxiliaries,College of Chemistry and Chemical Engineering,Shaanxi
University of Science Technology, i an 710021,China)
Abstract:n order to improve the stability and anticorrosive properties of the latex,allic
g
I
acid(GA)and butyl ethylene glycol ether(BE)were used as raw materials to synthesize gallic
acid ester(GA-BE) as rust conversion agent,and silicone modified styrene-acrylic latex
(SAL-Si) was synthesized by preemulsification-semi-continuous seeded emulsion
polymerization as the film-forming material,so as to prepare gallic acid esters/modified
.
styrene-acrylic anticorrosive rust conversion latex(GA-BE/SAL-Si) A stability analyzer was
used to test the stability of the latex,neutral salt spray test,5%NaCl solution immersion test
and electrochemical analysis were used to explore the corrosion resistance,and XRD,XPS,
SEM,and EDS were used to analyze the surface morphology of the substrate before and after
[基金项目] 西省重点研发计划项目(2023-YBGY-324)
*通信作者:张光华(1962—),男,教授,博士生导师,研究方向为水溶性高分子助剂。
本文规范引用格式:
刘 萍,张光华,杜佳 ,等. 食子酸酯/改性苯丙防腐转锈乳胶的制备及性能研究[J]. 涂料工业,2024,54(10):45-52.
LIU Y P,ZHANG G H,DU J N,et al. Preparation and performance study of gallic acid esters/modified styrene-acrylic anticorrosive rust conversion
latex[J]. Paint & Coatings Industry,2024,54(10):45-52.
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