一种新型环保铜箔表面钝化处理工艺研究

来源期刊：有色金属科学与工程2013年第2期

论文作者：黄永发 王艳 赖学根 李立清 唐云志

文章页码：14 - 18

关键词：铜箔；表面钝化；钼酸钠；添加剂

Key words：copper foil; surface passivation treatment; sodium molybdate; additives

摘    要：为了取代现有铜箔钝化工艺中有毒物质六价铬的使用，以钼酸钠、植酸等作为新型添加剂，对经过“粗化—固化”处理后的铜箔直接进行钝化实验，探讨了钼酸钠、磷酸钠、氧化锌等添加剂含量和电流密度、钝化时间及植酸存在等单因素条件变化对钝化膜的影响，得出最佳工艺参数为：钼酸钠 8 g/L，磷酸钠 4 g/L，氧化锌 3 g/L，植酸 2 mL/L，钝化时间 10 s，电流密度 0.2 A/dm2.在最佳工艺下，得到的铜箔钝化膜表面平整均匀、质量较好，通过抗氧化试验和盐雾试验后，该铜箔表面无任何缺陷，未出现氧化、腐蚀现象，表现出较理想的抗氧化能力和抗腐蚀能力，具有良好的应用前景.

Abstract: In order to replace the poisonous hexavalent chromium in the passivation treatment technology of copper foil, a new passivation treatment technology is studied by using sodium molybdate and phytic acid as additives. The passivation treatment experiment was conducted directly to the copper foil that had been treated by coarsening and curing disposition. The effects of the passivation coating are explored by changing the content of sodium molybdate, sodium phosphate, zinc oxide and the experimental conditions of current density, passivation time and existence of phytic acid. The optimization process parameters are shown as follows, sodium molybdate 8 g/L, zinc oxide 3 g/L, sodium phosphate 4 g/L, phytic acid 2 mL/L, current density 0.2 A/dm2, passivation time 10 s. The copper foil with good quality obtained under the optimal condition is well-distributed. More importantly, the copper foil has no drawbacks after the antioxidative experiment and salt spray test, which exhibits good antioxidant and anticorrosion ability with promising application.