Q. Is there a powder available that can coat gas spring, curing at 100°C? We’d like to coat our parts with powder, but the part cannot take a high cure. B.H.
A. The answer to your question is yes, there are powder coatings that can be used to coat gas springs that cure at 100°C. These products are cured by UV light. The coating is applied with standard electrostatic spray equipment. It is melted in a thermal oven (infrared or convection) that raises the temperature to around 200°F (93°C). The powder melts and flows, and then it is exposed to the UV lamps. The UV energy activates a photo-initiator in the coating and the coating chemically cross-links very rapidly as a result of exposure to the UV rays.