powder coating widely used

Powder coating are 100% solid powder coating without solvent. The utility model has the advantages of no solvent, no pollution, saving energy and resources, reducing the labor intensity and the mechanical strength of the coating film. It has two major categories: thermoplastic coatings (PE) and thermosetting coatings. Coating by special resin, pigment and filler, curing agent and other additives, are mixed in a certain proportion through hot extrusion, and crushing and screening process for preparation. 

They at normal temperature storage stability, by electrostatic spraying, friction spraying (thermoset) method, fluidized bed or dip coating (thermoplastic), re heating melting and solidification, forming a smooth bright permanent coating, achieve purpose of decoration and corrosion. According to experts, epoxy powder coating is the most important, but also one of the best performance, with excellent adhesion, flexibility, and excellent corrosion resistance and corrosion resistance, the market is widely welcomed and welcome.

PE powder coating has excellent corrosion resistance, chemical resistance, excellent electrical insulation and ultraviolet radiation resistance. The disadvantage is that the 

mechanical strength is not high, the adhesion of the matrix is poor. Can be used for chemical tank, impeller, pump, pipeline inner wall, instrument shell, metal plate, refrigerator inner net plate, auto parts, etc.

Classification standard, the name of various types of powder on the market is uneven. According to the properties of the film forming material is divided into two categories: thermoplastic 

powder coating (PE) and thermosetting coating. Or the appearance of film forming material is divided into: extinction type, high light type, art type, etc.. You can also press the use of the environment is divided into indoor and outdoor two categories. The melt viscosity of the coating is low, and the film flow is good; the curing reaction is not produced by the side product, and the appearance of the coating film is good, and the defects of the film hole and the crater are not easy to produce. Because the epoxy resin molecules have hydroxyl group, the adhesion of metal and other substrates is good, generally do not need a primer. The film has high hardness 

and good scratch resistance. In the epoxy resin structure, bisphenol A skeleton, has the good flexibility ether chain, the film has good physical and mechanical properties. The color matching and powder matching of the coating is good, and the selection range of curing agent is wide. Powder coatings with good adaptability, can be used electrostatic powder spraying, fluidized 

bed coating, flame spraying and air spraying and other coating method.