PC/ABS合金塑料电镀工艺改进

Improvement on electroplating process for PC/ABS alloy plastic

对卫浴产品用PC/ABS塑料件的电镀工艺进行了改进:以酰胺类膨胀剂替代苯酚类膨胀剂进行预粗化,以改善镀层的完整性和外观;在催化前采用氨基甲酸盐类高分子有机物进行表面调整,以减少氯化钯催化剂的用量,提高表面沉钯的质量,缩短电镀时间。改进后的流程主要包括:预粗化,除油,亲水,粗化,回收,中和,表调,预浸,催化,加速,化学沉镍,活化,预镀铜,镀酸铜,镀半光镍,镀光镍,镀铬,烘干,包装。以改进后的工艺对德国拜耳Bayblend ABS+PC2953和台湾奇美Wonderloy PC/ABS PC-365塑料件进行批量电镀,镀层百格结合力测试全部合格,外观合格率达90%,每小时产值提高了约1200元。

A process for electroplating of PC/ABS plastic articles used for sanitary wares was improved by： （1） pre-roughening with amide-type swelling agent instead of phenol-type swelling agent to improve coating integrity and appearance; and （2） surface conditioning with carbamate- type high-molecular organic compound prior to catalysis to reduce the amount of PdC12 catalyzer, improve the quality of Pd deposit, and shorten the plating time. The improved process flow mainly includes pre-roughening, degreasing, hydrophilizing, roughening, reclaiming, neutralizing, surface conditioning; pre-dipping, catalyzing, accelerating, electroless nickel plating, activating, copper pre-plating, acid copper plating, semi-bright nickel plating, bright nickel plating, chromium plating, drying, and packaging. The results of batch plating with Bayer Bayblend~ ABS＋PC 2953 and Chi Mei Wonderloy PC/ABS PC-365 plastics by the improved process showed that all products pass the cross-cut adhesion test and 90% of them have qualified appearance. The output value is raised by about 1 200 RMB per hour.