摘要
以干性长油度醇酸树脂为成膜物质,松香酸锌为缓蚀剂并加入其他助剂制备了松香基醇酸树脂防腐磁漆。利用Tafel极化曲线、电化学交流阻抗及盐雾试验测试了涂料的防腐性能。结果表明:添加了缓蚀剂松香酸锌的醇酸树脂涂层具有更好的防腐蚀性能。松香酸锌的添加量为0.25%时的涂层防腐性能最佳,腐蚀电流密度由39.6μA∙cm^(-2)下降到1.9μA∙cm^(-2),阻抗值可从1.2 kΩ∙cm^(2)提升到7.0 kΩ∙cm^(2);盐雾试验分析、附着力测试及硬度测试表明添加松香酸锌为0.25%时的涂层具有更好的防腐性能、更强的附着及更高的硬度,可以显著提高醇酸树脂防腐磁漆的性能。
A rosin-based alkyd resin anticorrosive enamel paint was prepared using the drying long oil alkyd resin as the film-forming substance,zinc rosinate as corrosion inhibitor and other additives.The anticorrosive properties of enamel paints were analyzed by Tafel curve,AC impedance technique and salt spray fog test.The results showed that the enamel paints had the better corrosion resistance after addition of zinc rosinate.The anticorrosive properties of coatings were the best when 0.25%of zinc rosinate was added into the formula of enamel paints.The corrosion current of anti-corrosive coatings decreased from39.6μA∙cm^(-2) to 1.9μA∙cm^(-2),and the impedance value increased fromabout 1.2 kΩ·cm^(2) to 7.0 kΩ·cm^(2).The salt spray test analysis,adhesion test and hardness test also showed that the enamel paints had better anti-corrosion properties,better adhesion and higher hardness when 0.25%of zinc rosinate was added into the formula,and the properties of alkyd resin enamel paints can be significantly improved.
作者
谭政亮
余会成
石展望
文新萍
雷福厚
苏东荣
TAN Zhengliang;YU Huicheng;SHI Zhanwang;WEN Xinping;LEI Fuhou;SU Dongrong(Guangxi Key Laboratory of Chemistry and Engineering of Forest Products,School of Chemistry and Chemical Engineering,Guangxi University for Nationalities,Nanning 530006,China;Key Laboratory of Guangxi Colleges and Universities for Food Safety and Pharmaceutical Analytical Chemistry,School of Chemistry and Chemical Engineering,Guangxi University for Nationalities,Nanning 530006,China;Guangxi Wuzhou Dragon-Fish Paint Industry Co.,Ltd.,Wuzhou 543001,China)
出处
《电镀与精饰》
CAS
北大核心
2022年第6期31-36,共6页
Plating & Finishing
基金
广西重点研发计划(桂科AB18281024)
广西自然科学基金项目(2018GXNSFAA294086)。
关键词
磁漆
松香酸锌
电化学测试
盐雾试验
腐蚀阻力
enamel paint
zinc rosinate
electrochemical test
salt spray fog test
corrosion resistance
