Application of pearlescent pigments in plastics

The basic raw material of pearlescent pigments is natural mica. Mica is carefully ground into fine powders of different particle sizes, and then coated with titanium dioxide to form coatings of different thicknesses, and then fired at a high temperature above 700 degrees Celsius and special treatments to make translucent, very stable, almost It is a chemically inert pearlescent pigment. They are not affected by temperature during application. Its flaky structure will not precipitate, bloom or melt in the resin. Pearlescent pigments are non-toxic and do not contain metal components. They completely rely on chemical principles to form different colors. By controlling the particle size of the mica and the thickness of the coating layer, a series of white, metallic and golden pearlescent pigments with different particle size ranges can be obtained.

Application of pearlescent pigments in plastic products

    Pearlescent pigments are translucent. In the application process, it is necessary to pay attention to its optical properties and use them in order to achieve a good pearlescent effect. In recent decades, the application of the plastics industry in the world has developed rapidly. It also occupies an important position in my country's national economy. With the improvement and development of plastic forming processing methods, plastic products are becoming more and more colorful. The application of pearlescent pigments in plastics is also becoming increasingly popular. From artificial leather, wallpaper, plastic packaging film, cosmetics, shampoo packaging, home appliance plastic parts, 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 thermoplastics and some thermosetting plastics. The concentration of pearlescent pigments used in plastics depends on different application conditions. However, it is generally 1-2% (by weight of the resin), which can achieve a satisfactory pearlescent effect. For some film products, a pearlescent pigment concentration of as high as 4-8% must be used. In addition, some plastics with lower transparency also need to use higher content of pearlescent pigments or larger particles to achieve special effects. Pearlescent Pigment