Preparing Copper for Powder Coat
I have a customer who is coating copper with an epoxy-based powder coating. Is there a recommended pretreatment for this type of system?
Q. I am a manufacturer of powder coatings. I have a customer who is coating copper with an epoxy-based powder coating. The finished parts will be subjected to 300°F for some time in their service life. Is there a recommended pretreatment for this type of system? J.K.
A. You have several choices with preparing copper for powder coating. One is mechanical abrasion (scuff sanding) and wiping with alcohol. The other is using a chemical etchant to remove any oxides and clean the surface. Unfortunately, there are no conversion coatings for copper (i.e. phosphate, chromate, etc.). If the substrate is clean from organic and inorganic soils, you should have no problems.
Related Content
-
Low-Temperature-Cure Powder Coatings Offer Unique Opportunities
An in-depth look at the advantages of low-temperature-cure powder coatings and the considerations for incorporating them into your process.
-
Powder Coating 4.0: Smarter, Faster, More Efficient and Connected
New tools reduce cost and waste, lower manufacturing footprint of powder coating operations.
-
Curing Oven Basics
Simply heating up the substrate does not cure the coating. There are many variables to consider when choosing the best cure oven for your application...