POLYVINYLIDENE FLUORIDE COATING FOR METAL SUBSTRATES

摘要

The invention relates to a one-step fluoropolymer, especially polyvinylidene fluoride (PVDF), coating for use on metals, especially use on metal fuel line and brake tubes, etc, to provide a protective barrier with superior chemical resistance, impact resistance and heat resistance as well as good flexibility. The coating composition contains, on a resin solids basis, 75-94 percent polyvinylidene fluoride resin, 5-20 percent acrylic resin, and 1-15 percent polyepoxide polyepoxide resin. The coating has excellent adhesion on metal substrates, particularly on non-pretreated galvanized steel, without the need for a primer coating.