Carbon black is an amorphous form of carbon. Light, loose and extremely fine black powder with a very large specific surface area, ranging from 10-3000m2/g, which is obtained by incomplete combustion or thermal decomposition of organic matter (natural gas, heavy oil, fuel oil, etc.) under the condition of insufficient air product. Specific gravity 1.8-2.1. The higher the oil absorption value, the higher the carbon black structure, which is easy to form spatial network channels, and is not easy to be damaged. The finer the carbon black, the higher the degree of light absorption (blackness). High-structure carbon black has good dispersibility, and its tinting strength is naturally stronger. The use of black pigments with organic UV absorbers and antioxidants can prolong the service life of plastic products. Carbon black is considered the best UV stabilizer. Carbon black is an important reinforcing filler in the reinforcing filling system, which has an important influence on the physical and mechanical properties and processing technology of the rubber compound.