How spray liquid paint on aluminum tubes?
Outdoor environment or to be careful, and do not apply common epoxy paint outdoors. Only acrylic polyurethane finish, acrylic polyurethane has good resistance to weathering resistance, but because the paint itself, there is a slight pores, without primer and spray painted in, after long-term exposure to rain and other environmental, moisture will penetrate the paint film formed in contact with the aluminum aluminum compound, resulting in peeling paint.
There are primed to do with ordinary epoxy adhesion fairly even weaker. Be sure to do a primer, in outdoor acrylic polyurethane topcoat with only a try. If not, the outdoor open-air environment, then do not often collide, indoor use only, can be directly used epoxy paint, no problem.
Spraying paint is the primary consideration of the primer on aluminum and aluminum adhesion. The general market is more comparative phosphate primer, a sacrificial phosphate primer paint (substrate will cause losses) and high performance requirements of the attachment is not ideal.
