漆膜的附着力与电化学阻抗行为关系的研究  

Study on the relationship between adhesion strength and electrochemical impedance behavior of coating

作　　者：赵鹏[1] 于奔 董佳晨 方琼[3] 张胜寒[2] 于金山[1] 梁可心[2] ZHAO Peng;YU Ben;DONG Jiachen;FANG Qiong;ZHANG Shenghan;YU Jinshan;LIANG Kexin(Electric Power Research Institute of State Grid Tianjin Electric Power Company,Tianjin 300092,China;不详)

机构地区：[1]国网天津市电力公司电力科学研究院,天津300384 [2]华北电力大学环境科学与工程系,河北保定071003 [3]国网天津市电力公司,天津300010

出　　处：《电镀与涂饰》2020年第22期1599-1603,共5页Electroplating & Finishing

基　　金：国网天津市电力公司科技项目(KJ19-1-15)“输电铁塔、壳体涂层腐蚀破损质量检验指标体系建设与应用”。

摘　　要：在热浸镀锌钢板上刷涂不同道数的底漆、中间漆和面漆(1+1+1、1+2+1、2+1+1、2+2+1或2+2+2),通过测量漆膜体系的电化学阻抗谱,分析了等效电路中的元件参数。结果发现,漆膜附着力与表示镀锌层与漆膜之间界面双电层的常相位角元件(CPE)的弥散指数n近似呈线性关系,n越小,漆膜附着力越大。在不破坏漆膜的条件下,可以通过n值来评价漆膜附着力,从而评估漆膜的性能。The hot-dip zinc-coated steel sheets were brushed with different thicknesses of primer,midcoat,and topcoat(1+1+1,1+2+1,2+1+1,2+2+1,or 2+2+2).The electrochemical impedance spectra(EIS)of the coating systems were measured and the parameters of the components in the equivalent circuit were analyzed.The results showed that the adhesion strength of the coating had a nearly near relation to the parameter n of the constant phase element(CPE)which representing the double-layer capacitance at the interface of hot-dip zinc-coated steel sheet and coating.The smaller the n value is,the higher the adhesion strength of the coating is.It is feasible to estimate the adhesion strength of a coating nondestructively through the measurement of n,thus assessing the performance of the coating.

关 键 词：热浸镀锌 漆膜 电化学阻抗谱 等效电路 附着力 无损检测 

分 类 号：O646.6[理学—物理化学] TG174.36[理学—化学]