丙烯酸-没食子酸基新型改性转锈剂乳液及耐高温涂料的合成研究  

Synthesis of New Modified Rust Transfer Agent Emulsion and High Temperature Resistant Coating Based on Acrylic Acid and Gallic Acid

作　　者：汪秀[1] WANG Xiu(Department of Primary Education,Tongcheng Teachers College,Tongcheng 231400,China)

机构地区：[1]桐城师范高等专科学校小学教育系,安徽桐城231400

出　　处：《长春师范大学学报》2024年第8期99-103,117,共6页Journal of Changchun Normal University

基　　金：安徽省高校自然科学研究重点项目“丙烯酸转锈剂乳液的合成与性能研究”(KJ2021A1300201);安徽省高校自然科学研究重点项目“成核剂对低密度聚乙烯改性性能影响及应用研究”(2022AH053017);安徽省中青年教师培养行动项目——优秀青年教师培育一般项目“丙烯酸稀土防腐涂料制备及性能研究”(YQYB2023124)。

摘　　要：转锈剂具有反应条件温和、高效等优点,因此被广泛应用于金属表面的防锈处理。为解决大型钢材建筑除锈难的问题,本研究以丙烯酸、没食子酸为原料,采用种子乳液聚合法制备了一种新型的转锈剂乳液,并以此为成膜物质。以环氧树脂、多异氰酸酯为主要原料,采用溶胶-凝胶法制备了一种耐高温涂料。结果表明,改性丙烯酸转锈乳液粒径相对均匀,涂覆锈转化涂料的样品腐蚀电位为-0.613 V,比裸钢及附着锈钢的腐蚀电位要低得多,对锈转化有一定的抑制作用。通过一系列单因素实验得出耐高温涂料的最佳制备条件为:研磨时间为50 min、分散时间为60 min、颜基比为3.0、漆膜厚度为300μm、固化剂用量为15%。研究制得的转锈剂乳液稳定性较好,耐腐蚀性能优异,可实现金属设备的防腐蚀要求。Rust transfer agent has the advantages of mild reaction conditions and high efficiency,so it is widely used in rust prevention treatment of metal surface.In order to solve the difficult problem of rust removal in large steel buildings,a new rust transfer agent emulsion was prepared by seed emulsion polymerization with acrylic acid and gallic acid as raw materials,and a high temperature resistant coating was prepared by sol-gel method with epoxy resin and polyisocyanate as the main raw materials.The results show that the particle size of the modified acrylic acid emulsion is relatively uniform,and the corrosion potential of the sample coated with rust conversion coating is-0.613 V,which is much lower than that of bare steel and rust-attached steel,and has a certain inhibition effect on rust transformation.Through a series of single factor experiments,the optimum preparation conditions of high temperature resistant coatings are as follows:grinding time is 50 min,dispersion time is 60 min,face base ratio is 3.0,paint film thickness is 300μm,and curing agent dosage is 15%.The rust transfer agent emulsion prepared by research has good stability and excellent corrosion resistance,and can meet the anti-corrosion requirements of metal equipment.

关 键 词：丙烯酸 没食子酸 转锈剂乳液 耐高温涂料 耐蚀性 

分 类 号：TQ630.7[化学工程—精细化工]