The application of pearlescent pigments in plastics

Pearlescent pigmentThe basic raw material of is natural mica. Mica is carefully ground into fine powder of different particle sizes, and then coated with titanium dioxide to form coatings of different thicknesses. Then, after high-temperature firing at more than 700 degrees Celsius and special treatment, it is made into translucent, very stable, and almost chemically inert pearlescent pigments. They are not affected by temperature during the application process. Its flaky structure does not precipitate, frost or melt in the resin. Pearlescent pigments are non-toxic and do not contain metal components themselves. Completely relying on chemical principles, different colors are formed. By controlling the particle size of mica and the thickness of the coating layer, a series of pearlescent pigments of white, metallic and gold series with different particle size ranges can be obtained.

The application of pearlescent pigment in plastic products

    Pearlescent pigment is translucent. During the application process, its optical properties must be noted and utilized to achieve a good pearlescent effect. RecentlyIn the past few decades, the application and development of the plastic industry in the world has been very rapid. It also occupies an important position in China's national economy. With the improvement and development of plastic forming and processing methods, plastic products have become increasingly rich and colorful. The application of pearlescent pigments in plastics is also becoming increasingly popular. From artificial leather, wallpaper, plastic packaging film, cosmetics, packaging of shampoo products, plastic parts of household appliances, to artificial pearls, plastic buttons and other plastic products, pearlescent pigments are widely used to increase attractiveness. Pearlescent pigments can be applied to almost all thermoplastic plastics and some thermosetting plastics. The concentration of pearlescent pigments used in plastics depends on different application conditions. But generally 1-2% (accounting for the weight of the resin) can achieve a satisfactory pearlescent effect. For some film products, a pearlescent pigment concentration of up to 4-8% needs to be used. In addition, some plastics with lower transparency also need to use a higher content of pearlescent pigments or larger particles to achieve a prominent effect. Pearlescent pigment