Thermosetting electrostatic powder coatings

Thermosetting plastic powder can be divided into two categories: thermoplastic thermosetting. Thermosetting powder coating takes thermosetting synthetic resin as film-forming material. In the drying process, the resin is melted first, then chemically crosslinked to form a smooth hard film. The appearance, mechanical properties corrosion resistance of the film can meet the requirements of automobile finishing. Thermosetting plastic powder is widely used, there are many thermosetting plastic powder manufacturers in the market. We should carefully screen the suitable products when purchasing.

Thermosetting powder coatings are composed of thermosetting resins, curing agents, pigments, fillers additives. Thermosetting powder coatings include epoxy resin, polyester acrylic resin. 

Thermosetting powder coating is a kind of hard coating which can be formed by heating thermosetting resin as film-forming material curing agent for crosslinking reaction. No matter how high the temperature is, the coating will soften like the thermoplastic coating, but will only decompose. Because the resin used in thermosetting powder coating is a prepolymer with low polymerization degree low molecular weight, the leveling property of the coating is good has good decorative property. Moreover, the low molecular weight prepolymer can form network crosslinked macromolecules after curing, so the coating has good corrosion resistance mechanical properties. Therefore, the development of thermosetting powder coatings is particularly rapid.