Application of carbon black in the field of coatings

The application range of carbon black in coatings mainly includes construction, general color paste, automotive topcoat, automotive primer, automotive electrophoretic paint, industrial coatings, and powder coatings.
1、 Carbon black is used in building coatings
Carbon black is mainly used for color matching in architectural coatings. Carbon black with coarse particles and easy dispersion is more suitable. If UV resistance is required, select 20 μ Carbon black with a particle size of m is more suitable.
As a color mixing pigment, it is usually required to have good stability, not easy to produce floating colors and hair patterns, and have a blue hue. The carbon black products of Pigment Carbon Black Company can meet the color matching requirements with a blue phase, and affordable pigments such as live color carbon black are used.
2、 Carbon black is used for universal color paste
Universal color paste refers to a color paste that can be used for both water-based and solvent based coatings. The universal color paste contains pigments dispersed in a mixture composed of solvents, cosolvents, diluents, and wetting agents.
Generally, resin solids are rarely added. This use includes special requirements for long-term inventory, including long-term effective stability of color, anti flocculation, viscosity stability, and anti settling. Coarse carbon black has strong stability and is widely used in general color pastes.
3、 Carbon black is used for car topcoat
When people observe the appearance of a car, the car topcoat gives a sense of beauty. Car topcoat is used to provide protection and the appearance that people need.
Carbon black used in coatings produced from pigment carbon black is widely used as the main color pigment, with high blackness, high gloss, and UV resistance. There are also high purity, low residual salt content, and higher blackness.
4、 Carbon black is used for car primer
Automotive primer is generally not visible, but it is the foundation of the surface coating system. The requirements for primer carbon black include dispersibility, purity, and sometimes conductivity.
5、 Carbon black is used in automotive electrophoretic paint
Automotive electrophoretic coatings are mainly divided into two categories: one is that they can be electrophoretically coated themselves; Another type is conductive and can be coated on non-conductive substrates before applying electrophoretic paint. The carbon black properties required for these two car electrophoretic paints are different.
6、 Carbon black used in industrial coatings
Industrial coatings are generally used for the coating of equipment and machinery. This type of coating has various requirements for pigments, and the variety of base materials, construction methods, and colors also vary.
Pigmented carbon black products, from lamp black substitutes to high pigment carbon black, can be used in industrial coatings, but suitable varieties need to be selected based on each specific usage requirement.
7、 Carbon black is used in powder coatings
Powder coatings have basically no VOC release. The basic preparation method of powder coatings is to first disperse the pigment in the required resin system, and then convert the dispersion into powder. The dispersion of pigments is a continuous process that uses a mixing extruder to extrude through the extrusion head, then cut short, and then ground into a powder state.
Whether carbon black can be completely dispersed in an extruder with low shear force is the key to producing qualified products in this process. When choosing carbon black varieties, color is of course important, but it also depends on its dispersion efficiency.