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塑料电镀与金属电镀的主要区别在于前处理不同,因为塑料是绝缘体,故必须预先使塑料表面形成一层导电体——金属薄膜,作为底层金属方可进行电镀。目前国内大多数塑料电镀厂采用的工艺是:在塑料制品经过粗化后,用酸性的氯化亚锡溶液进行敏化处理,再经过硝酸银溶液活化后进行化学镀铜,此工艺由于有下列原因而趋向淘汰。 1.工序繁琐,劳动强度大。其工艺流程为:敏化—自来水清洗—蒸馏水清洗—蒸馏水清洗—活化—还原—水清洗—化学镀铜。并且要求从敏化到还原多
The main difference between plastic plating and metal plating is that the pre-treatment is different. Because plastic is an insulator, it is necessary to form a layer of conductor-metal film on the surface of the plastic in advance to be plated as the underlying metal. At present, most of the plastic electroplating process used in the country is: After the plastic products after roughening, acidified with stannous chloride solution for sensitized treatment, and then after the activation of silver nitrate solution for electroless copper plating, this process due to the following Reason and tend to be eliminated. 1. Tedious process, labor-intensive. The process is: sensitization - tap water cleaning - distilled water cleaning - distilled water cleaning - activation - reduction - water cleaning - electroless copper plating. And request from the sensitization to restore more