Adhesion over Powder Coated Surfaces
Is there a way to improve adhesion of two-component polyurethane adhesives to polyester- and epoxy-based powder-coated surfaces?
Share
Q. Is there a way to improve adhesion of two-component polyurethane adhesives to polyester- and epoxy-based powder-coated surfaces? K.P.
A. It is possible to apply an adhesive over a powder. The challenge is to find an adhesive/powder combination that works. You need to select a powder that meets the performance and appearance properties you need, and then work with an adhesive supplier to find the correct adhesive. Polyester powder is more likely to provide adhesion than epoxy powder. You can roughen the surface where you need the adhesion, but that may not be feasible. Talk to an adhesive supplier and you should be able to make it work.
RELATED CONTENT
-
Touch-up Options for Powder Coated Parts
Is it true that powder coating cannot be touched up? Powder coating expert Rodger Talbert offers options for powder coating touch-ups.
-
Calculating Oven Heat Load Capacity
Please explain how to calculate the heat load capacity of a paint baking oven, using aluminum alloy wheels as an example.
-
Preparation of Stainless Steel for Powder Coating
Should type 316 stainless steel castings be sandblasted before powder coating, or can they be chemically etched? Should the parts be pre-heated in an oven before coating?
