Powder coating is a new, solvent-free, 100% solid powde […]
Powder coating is a new, solvent-free, 100% solid powder coating. It has the characteristics of no solvent, no pollution, energy and resource saving, reduced labor intensity and high mechanical strength of the coating film.
It has two major categories of thermoplastic powder coatings (PE) and thermosetting powder coatings.
Disadvantages: uneven powder on edges and corners, difficult to cover up film defects after curing, and high curing conditions.
There are many classification standards, and the names of various powders on the market are uneven. According to the properties of film-forming substances, it is divided into two categories: thermoplastic powder coatings (PE) and thermosetting powder coatings. Or the appearance of the film-forming material can be divided into: matte type, high gloss type, art type, etc. It can also be divided into two categories according to the use environment: indoor type and outdoor type.
Application of powder coating
The largest growth areas of the powder coating coating market in my country are: shipbuilding industry and pipeline industry. The problem is that the impact resistance and hygroscopicity need to be improved and improved. Researchers focus on the modification with various base materials. In terms of storage stability and coating workability, domestically produced pipeline anticorrosive epoxy powder coatings still have a certain gap compared with foreign high-quality products.
Due to the progress in the preparation technology of foreign automotive powder coatings, automotive finishing, wood and plastic coatings are the most dynamic potential markets. The automotive industry will be its major consumer, and the powder coatings and coating markets in Greece, Turkey and Eastern Europe are growing well. The Asia-Pacific region has greater market potential and is considered to be the fastest growing region in the world.
Manufacturing process of powder coating
The coating is made of special resin, pigments, fillers, curing agents and other additives, mixed in a certain proportion, and then prepared by processes such as hot extrusion, crushing and sieving. They are stable in storage at room temperature. After electrostatic spraying, friction spraying (thermosetting method) or fluidized bed dip coating (thermoplastic method), they are heated and baked to melt and solidify to form a smooth and bright permanent coating film to achieve decoration. And the purpose of anti-corrosion.