PROCEDE POUR OBTENIR DES ARTICLES EN RESINE EPOXY CHARGEE, REVETUS DE NICKEL

摘要

METHOD OF OBTAINING NICKEL COATED FILLED EPOXY RESIN ARTICLE Electroless nickel coating of epoxy resin foundry patterns and core boxes can be carried out without a palladium chloride/ stannous chloride activation of the surface, if the pattern or core box contains a high density of metal particles which act as "keying" sites, and if the metal-filled resin surface is properly prepared. The preparation steps include a very light abrading with a fine (minus 60 U.S. mesh and preferably even finer) grit and a very brief acid pickling step. The electroless-plated article has a continuous coating of nickel bonded essentially directly to the resin through the metallic "keying" sites.