To get the matting effect, you can use the following methods:
a. Mix powder coatings with different curing speeds by dry mixing method, then the gloss of the resulting coating film is significantly reduced, and it plays a matting effect. Due to the rapid curing of the highly reactive powder coating, the slow-curing resin in the continuous phase is leveled and the reaction is hindered, and the final cured coating film loses its luster. Although this method is effective, it increases manufacturing steps and costs.
.b. Add thermoplastic resin. Adding cellulose acetate to epoxy powder coating, and adding fine powdery low molecular weight polyethylene and polypropylene resin to polyester powder coating can obtain matte powder coating. Coating gloss is affected by manufacturing conditions. Because the addition of thermoplastic resins will affect the storage stability of powder coatings, the addition amount is limited to 2-3% of the resin amount.
c. Use special curing agent with matting effect.
d. Add filler with matting effect. Adding fillers such as ultra-fine silica, talc, etc., significantly reduces gloss. In particular, the particle size of the filler has a great influence on the gloss of the coating film. The larger the particle size, the lower the gloss. It should be noted that increasing the amount of filler will reduce the flatness and mechanical strength of the coating film. In epoxy powder coatings, the effect of calcium carbonate particle size on film gloss is shown in the table. Adding ultra-fine silica and kaolin to acrylic and polyester powder coatings can get matte coatings.
In addition, matting paints can also be obtained by adding waxes such as polyethylene paraffin and hydrogenated castor oil.

In recent years, China's paint industry is still in the ascendant, and the total output of paint has leapt to the forefront of the world, forming a related industry group, and actively promoting the technological revolution and development in the traditional coating field. During this period, high-gloss bright coatings were favored by consumers due to their bright colors and bright colors, and dominated the coatings market for a long time. However, with the continuous improvement of people's living standards, on the one hand, consumers feel that high-gloss bright coatings have a serious reflection after film formation, which is harmful to human eyes; on the other hand, consumers' aesthetic concepts are increasingly inclined to casual, Stylish and personal. Coupled with the booming needs of China's automotive and home appliance industries. These factors have led to a sharp increase in demand for low gloss coatings with a soft appearance. At the same time, how to produce coatings with matting properties has become a problem that paint designers must consider.