含铜防污剂对防腐蚀防污涂层体系保护性能的影响  

Effect of Anti-Fouling Agent Containing Cu on Protective Performance of Anticorrosive and Antifouling Coating System

作　　者：仝宏韬 唐聿明[1] 曹京宜[2] 赵旭辉[1] 左禹[1] 

机构地区：[1]北京化工大学材料科学与工程学院材料电化学过程与技术北京市重点实验室,北京100029 [2]海军涂料分析检测中心,北京102442

出　　处：《材料保护》2016年第9期4-7,104,共4页Materials Protection

摘　　要：目前,对完好防腐蚀防污涂层体系中铜离子向涂层内部的渗透及其对涂层保护性能的影响报道较少。对在3.5%Na Cl溶液中浸泡近900 d的4种船舶用防腐蚀防污涂层/铝合金试样进行电化学交流阻抗(EIS)测试与分析,4种配套涂层中的防污漆中含有氧化亚铜或硫氰酸亚铜防污剂。对涂层下的铝合金基体表面进行了扫描电镜观察和能谱分析,并分析了4种涂层配套中底漆、中间漆和防污面漆各涂层中的铜元素含量。结果表明:当防腐蚀防污涂层体系完好时,配套的中间漆和防腐蚀底漆能够有效阻挡铜离子向基体方向的渗透,铜离子向涂层内部的渗透速率与防污剂类型及涂层种类关系不大,但是在涂层降解过程中,如果涂层孔隙率较大、吸水率较高,铜离子的渗透会加快,从而影响涂层体系对基体的保护性能。Electrochemical impedance method was used to study the electrochemical behaviors of four kinds of anticorrosive antifouling coating systems with aluminum alloy matrix which applied to the anti-corrosion of ships.The antifouling painl of four coating systems contained cuprous oxide or cuprous thioeyanate as anti-fouling composition.The aluminum alloy matrix under coating was studied by scanning electron microscope(SEM) and energy spectrum analysis(EDS),and the copper contents of the primer,intermediate and top paint in the 4 kinds of anticorrosive antifouling coating systems were analyzed.Results showed that when the coaling system was in integrity with no damages,the intermediate and anticorrosive primer could prevent the penetration of copper ions to the matrix effectively.Moreover,the infiltration rate of Cu ions to the inner coating was relative to the anti-fouling composition and coating type.However,if the coating poroaity and water absorption was higher during the degradation process of the coaling,the penetration rate of copper ions became faster,which had bad effect on the protective performance of the coating system on the matrix.

关 键 词：防腐蚀防污涂层 铜防污剂 交流阻抗 铝合金 

分 类 号：TQ637[化学工程—精细化工]