羟基石墨烯改性封闭剂的制备及其在锌镍合金镀层三价铬钝化后处理中的应用  

Preparation of hydroxylated graphene-modified sealing agent and its application in post-treatment of trivalent chromium passivated zinc–nickel alloy coatings

作　　者：郭崇武[1] GUO Chong-wu(Guangzhou Ultra Union Chemicals Ltd.,Guangzhou 510460,China)

机构地区：[1]广州超邦化工有限公司,广东广州510460

出　　处：《电镀与涂饰》2018年第7期310-311,共2页Electroplating & Finishing

摘　　要：将自制的纳米级羟基石墨烯溶液与硅溶胶、水溶性硅烷聚合物、有机硅消泡剂、有机硅流平剂和去离子水混合,得到一种改性封闭剂。经三价铬本色或蓝色钝化的碱性或酸性锌镍合金镀层用它进行封闭后,中性盐雾试验600 h仍无白锈。The home-made nanoscale hydroxylated graphene solution was mixed with silica sol,water-soluble silane polymer,organosilicon defoaming agent,organosilicon levelling agent,and deionized water to prepare a sealing agent.The electroplated zinc–nickel alloy coating can endure 600 h of neutral spray test without the formation of white rust after being treated by white or blue trivalent chromium passivator and the hydroxylated graphene-modified sealing agent.

关 键 词：铝合金 锌镍合金 电镀 三价铬钝化 羟基石墨烯 封闭 耐蚀性 

分 类 号：TQ153.2[化学工程—电化学工业] TG178[金属学及工艺—金属表面处理]