Summary for kevlar resin paint adhesion Discussion
Painting kevlar fabric impregnated with phenolic/PVB resin is the central question here: Paul Austin of Protech Armor Products asks how to get a water-based polyurethane finish to adhere to molded Kevlar helmets, and whether primers, blasting, or chemical etching are best. The excerpt shown does not include a technical answer to the coating question, so no specific recommendation is provided in the thread text. A separate follow-up from Erwin Venter asks whether the PVB resin could be recycled trim from windshield lamination waste, and a later RFQ from Johan Liebenberg asks where recycled PVB can be purchased in Port Elizabeth. Because the visible excerpt contains questions only, the page mainly documents material and sourcing concerns rather than a resolved finishing method.
Q. We are preparing to manufacture helmets molded from Kevlar fabric impregnated with phenolic/PVB resin. We will be using a water based polyurethane for the finish coats. What is the best method for ensuring that the paint adheres to this material? Are there primers that provide a surface for the finish to adhere to? Should we treat the surface by blasting or chemical etching?
Paul Austin
Protech Armor Products – Pittsfield, Massachusetts
2005
Q. The PVB resin used can this also be recycled trim from windshield lamination production waste?
ERWIN VENTER
– Port Elizabeth, South Africa
2005
RFQ: Where in Port Elizabeth can one purchase recycled pvb?
Johan liebenberg
colour centre – port elizabeth, South Africa
September 5, 2013