異種水酸化物の凝集コロイドを利用する無電解めっきについて

概要

論文の詳細を見る
The applicability of a method of activation using colloid aggregates of Ni(OH)2-Cu(OH)2 was examined for various plastics and for flake-like natural graphite. Furthermore, this activation method was applied to the electroless plating of nickel, cobalt, and nickel-cobalt alloy onto ABS plastic. The main results were as followed: The plastics, including polypropylene, polystyrene, polycarbonate, polyethylene, and polyvinyl chloride, and the flake-like natural graphite containing ash were satisfactorily activated with colloid aggregates of Ni(OH)2-Cu(OH)2 for electroless plating of copper. These results suggest that the surface-electrochemical mechanism of the activation process previously proposed by the authors is reasonable. When ABS plastic was activated with the colloid aggregates of Ni(OH)2-Cu(OH)2 prepared at high concentration ratios of Ni(II) to Cu(II), the Ni films formed on the ABS plastic were amply competitive with those activated by a conventional SnCl2-PdCl2 method. Similar results were obtained for the electroless plating of cobalt on ABS plastic using the colloid aggregates of Co(OH)2-Cu(OH)2. This activation method was also found to be applicable to the electroless plating of nickel-cobalt alloy on ABS plastic.