Examination for powder coating on aluminum alloy building exterior use

Part3 Discussion for practical use

Abstract

The solvent fluorine resin paintings are widely used for the surface finish of the aluminum alloy building materials for the long-term durability. In Japan, the powder coatings which doesn't contain the solvent are remarkable, because of the VOC exhaust problem.In the last presentation,we gave an account of the evaluated results about the cured powder coating's film on the aluminum alloy. We experimentally made the powder coating by adding oriented thermosetting fluorine resin with high weather resistance to polyester resin. In this study, we are aiming at practical application of the powder coating, we present next two matters. ①The outdoor weathering test results for four years in Okinawa.②Change of the gloss value on the cured coating surface with resin components.