What are the Most Widely Used Types of Powder Coating?

The most widely used powder coating are as follows:
1. Thermosetting powder coating: in powder coating, epoxy resin and polyester resin are the main film-forming substances. Thermosetting powder coating is the most widely used type in powder coating at present. Good decoration (over baking resistance, leveling, appearance fullness), excellent adhesion and other physical properties, low cost, which is obviously better than pure epoxy powder coating, but the corrosion resistance and hardness are slightly poor. It is widely used in the coating of indoor light industrial household appliances such as refrigerators, washing machines, electric fans and industrial sewing machines.

2. Environmentally friendly powder coatings: with the rapid development of electrical and electronic materials and composites, the demand for the characteristics of environmentally friendly powder coatings is becoming higher and higher. In addition to rapid curing, low stress and heat resistance, it also puts forward higher demands for the refinement of products such as high purity, low viscosity, flame retardancy and transparency; Powder coatings are transforming from general-purpose products to high-function and high value-added product series. The development of heat-resistant, flame-retardant, waterborne, high-purity and environmental friendly coatings and their supporting products will be the focus of R & D by coating consumption enterprises at home and abroad in the future
3. Aluminum profile powder coating: aluminum profile powder coating adopts powder coating, and electrostatic spraying is adopted in the process. Under the influence of accelerating wind, the powder particles will carry positive charge when ejecting from the gun body, contact with the profile with negative charge, produce electrostatic adsorption, and then cure at high temperature. It also strengthens the adsorption strength of the coating, and the aluminum strip prevents the paint film from falling.

4. Weather resistant polyester powder coating: the powder coating used in three sided advertising is weather resistant polyester powder coating. Most of the polyester resins used in powder coating are saturated. Generally, we can divide them into two categories according to the structure of their end groups: carboxyl end group and hydroxyl end group. When the aluminum profile is sprayed with powder and then heat transfer printing technology, it has a more fashionable trend, and the powder sprayed profile has a larger development space.