Twin Moulded Non Conducting Plastic Also Getting Plated.(2000)
We have received a twin material ABS - polycarbonate logo to be Satin nickel plated only on the grey ABS portion.
Our problem is that the blue polycarbonate, supposedly nonconducting material is also getting partially / fully covered with plating.
What are we doing wrong; is it the chromic acid etch, or the silver nitrate based activation or the electroless copper.
How can we avoid coating the blue polycarbonate ?
Bangalore, Karnataka, India
I think the only real difference between ABS and polycarbonate from a plating perspective is that ABS etches better for better adhesion of the plating; there is nothing inherent in the polycarbonate that prevents it from becoming activated and getting plated. I haven't worked on a similar job, so I could be completely wrong, but I don't think you'll solve this problem through chemistry adjustments, but only by masking at some point.
But I am not familiar with silver nitrate being a part of an ABS plating cycle. As far as I know, you use palladium seed chemistry for electroless copper or nickel, not silver nitrate.
Ted Mooney, P.E.
Pine Beach, New Jersey
This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site