By Hongli Wang and Shun Saitoh, AGC Chemicals. Fluoropolymers have superior chemical, corrosion and thermal resistance as well as excellent weathering, surface and optical properties when applied as coating materials on different substrates. Typical examples include: However, these fluoropolymers are not necessarily suitable for use in powder coatings in architectural applications. PTFE cannot be used as a film former in powder coatings because of its physical properties. For example, it does not have a clean melt ...