A New Palladium-Free Surface Activation Process for Cu Electroless Plating on ABS Plastic

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An environment-friendly surface etching and activation technics for ABS surface metallization were investigated as a replacement for conventional chromic acid etching bath and palladium catalyst. After etching by H2SO4-MnO2 colloid, the ABS surfaces became roughness; meanwhile the carboxyl and hydroxyl groups were formed on the surface. With absorption and a reduction by a dimethylamineborane solution, nickel particles were deposited on the ABS surface, which serves as a catalyst replacement for SnCl2/PdCl2 colloid. The effects of NiSO4 concentration, (CH3) 2NHBH3 concentration, reduction temperature and reduction time on the adhesion strength between the ABS surface and the electroless copper film were investigated.

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54-57

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July 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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