specializes in research & development and production of Carbon Black

The application scope and role of carbon black in coatings

Carbon black used in automotive topcoats

When people look at the appearance of a car, the car’s topcoat gives people a sense of beauty. Automotive topcoats are used to provide protection and desired appearance. Carbon black for coatings is widely used as the main color (black) pigment and has the characteristics of high blackness, high gloss, and UV resistance. It also has the characteristics of high purity, low sieve residue, and high blackness.

Carbon black used in automotive primer

Automotive primer is generally invisible, but it is the basis of the surface coating system. Requirements for carbon black in primers include dispersion, purity, and sometimes conductive properties.

Carbon black used in automotive electrophoretic paint

Automobile electrophoretic paint is mainly divided into two categories. One is the electrophoretic coating itself; the other is conductive and can be painted on a non-conductive substrate and then coated with electrophoretic paint. These two types of automotive electrophoretic paints require different carbon black properties.

Carbon black used in industrial coatings

Industrial coatings are generally used to paint equipment and machinery. This type of paint has more requirements for pigments, and the base materials, construction methods and colors are also different.

Carbon black used in architectural coatings

Carbon black is mainly used for color mixing in architectural coatings. Carbon black with coarser particles and easy dispersion is more suitable. If UV resistance is required, carbon black with a particle size of 20 μm is more suitable. As a mixed color pigment, it is usually required to have good stability, be difficult to produce floating and halo colors, and have a blue tone.

Carbon black is used in general colorants

Universal colorants are colorants that can be used in both water-based and solvent-based paints. Universal colorants contain pigments dispersed in a mixture of solvents, co-solvents, diluents and wetting agents. Typically, very little resin solids are added. These include long-term color stability, anti-flocculation, viscosity stability and anti-sedimentation properties. Coarse particle size carbon black has strong stability and is therefore widely used in general color pastes.

Carbon black for powder coatings

Powder coatings emit essentially no volatile organic compounds. The basic preparation method of powder coating is to first disperse the pigment in the desired resin system and then convert the dispersion into a powder. The dispersion of pigment is a continuous process, using a mixing extruder, extruding through the extrusion head, then cutting into short pieces, and then grinding into a powder state.

 

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