Pretreatment for electroplating mineral-filled nylon

Details Pretreatment for electroplating mineral-filled nylon Pretreatment for electroplating mineral-filled nylon

1984-12-20

1986-08-05

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

156643, 204 384, 204192EC, 204192E, C25D 554

Patent

active

046041680

ABSTRACT:
A method of preparing the surface of molded mineral-filled nylon to receive an adherent electrodeposited metal coating comprising the steps of: exposing the surface to a plasma glow discharge; vacuum depositing a film of chromium or titanium onto the plasma-treated surface; vacuum depositing a nickel film onto the chromium or titanium film to prevent oxidation thereof; and then vacuum depositing a copper film onto the nickel film. The plasma gas is preferably inert (e.g., argon, helium, etc.) and metal deposition is effected so as to avoid oxidation of the chromium/titanium and nickel films during processing.

REFERENCES:
patent: 4395313 (1983-07-01), Lindsay et al.
patent: 4402998 (1983-09-01), Kumagai et al.
patent: 4466874 (1984-08-01), Belke, Jr. et al.
C. I. Courduvelis, "Application of Plasmas in the Electroplating of Plastics".
Levy & Ma, "Interfacial Bonding of Nickel to Polyamide-Imide".
Hall et al., "Effect of Activated Gas Plasma Treatment Time on Adhesive Bondability of Polymers".

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