复配功能填料对无溶剂环氧涂层防腐性能的影响  

Effect of Compounded Functional Fllers on Anticorrosive Performance of Solvent-free Epoxy Coating

作　　者：孔明洁 李昱锋 赵家玉 李斌[2] 杨小刚[1] Kong Mingjie;Li Yufeng;Zhao Jiayu;Li Bin;Yang Xiaogang(College of Environment and Safety Engineering,Qingdao University of Science and Technology,Qingdao,Shandong 266042,China;College of Material Science Engineering,Qingdao University of Science and Technology,Qingdao,Shandong 266042,China)

机构地区：[1]青岛科技大学环境与安全工程学院,山东青岛266042 [2]青岛科技大学材料科学与工程学院,山东青岛266042

出　　处：《涂料工业》2024年第2期12-19,共8页Paint & Coatings Industry

基　　金：国家自然科学基金资助项目(41106070);泰山产业领军人才工程资助(tscy20221117)。

摘　　要：针对不同种类的功能型填料对无溶剂环氧涂层性能的影响进行研究,选择了云母氧化铁协同钙交换SiO_(2)作为防锈填料来增强涂料的耐腐蚀性,沉淀硫酸钡配合陶瓷粉来增强涂料的耐磨性,在合适的颜基比下采用正交试验法制备出不同填料复配的无溶剂型环氧涂料。通过基础性能测试、电化学交流阻抗(EIS)以及耐盐雾测试等,分析研究了复配填料的质量比对涂层性能的影响。结果表明:在成膜物质与填料的质量比为3∶2,填充填料与防锈填料质量比为1∶1,陶瓷粉与沉淀硫酸钡质量比为2∶1,云母氧化铁与钙交换SiO_(2)质量比为3∶1时,制备的涂层在物理性能优异的同时,还拥有很高的涂层电阻,经3.5%NaCl溶液浸泡3000 h后,涂层电阻仍能保持在6.486×10^(10)Ω·cm^(2),展现出了良好的耐腐蚀性。This paper studied the influence of different kinds of functional fillers on solvent-free epoxy coating performance.Micaceous iron oxide and calcium exchange SiO_(2)were selected as the antirust fillers to enhance the corrosion resistance of the coatings.Barium sulphate precipitated with ceramic powder were used to improve the wear resistance of the coatings,and solvent-free epoxy coatings with different filler compounds were prepared by orthogonal test method at the appropriate pigment/binder ratio.The effects of the mass ratio of the fillers on the coating properties were analyzed and studied by basic physical property tests,electrochemical impedance tests(EIS),and salt spray resistance tests.The results showed that the prepared coating possessed high impedance(Rc)along with excellent physical properties,at the mass ratio of film-forming substance to filler of 3∶2,filler to antirust filler of 1∶1,ceramic powder to precipitated barium sulfate of 2∶1,and micaceous iron oxide to calcium-exchanged SiO_(2)of 3∶1.The coating impedance could still remain at 6.486×10^(10)Ω·cm^(2)after soaking in 3.5%NaCl solution for 3000 h,showing good corrosion resistance.

关 键 词：无溶剂 环氧涂料 防锈填料 防腐涂层 交流阻抗技术 中性盐雾试验 

分 类 号：TQ635.2[化学工程—精细化工]