Carbon black VS Graphite powder

Natural graphite is crystalline, and carbon black is amorphous. Compared with chemical properties, carbon black is more active, and carbon black has a stronger ability to adsorb impurities. Carbon black is an amorphous carbon. Light, loose and extremely fine black powder with a very large surface area ranging from 10 to 3000m2/g. It is a carbonaceous substance (coal, natural gas, heavy oil, fuel oil, etc.) that undergoes incomplete combustion or thermal decomposition under the condition of insufficient air. obtained product. Specific gravity 1.8-2.1. The one made from natural gas is called “gas black”, the one made from oil is called “lamp black”, and the one made from acetylene is called “acetylene black”. In addition, there are “trough black” and “furnace black”. According to the performance of carbon black, there are “reinforcing carbon black”, “conductive carbon black”, “wear-resistant carbon black” and so on. It can be used as a black dye, used in the manufacture of Chinese ink, printing ink, paint, etc., and also used as a reinforcing agent for rubber.

Distinctions between graphite powder and carbon back

(1) Carbon black is an amorphous carbon. Light, loose and extremely fine black powder with a very large surface area ranging from 10 to 3000m2/g. It is a carbonaceous substance (coal, natural gas, heavy oil, fuel oil, etc.) that undergoes incomplete combustion or thermal decomposition under the condition of insufficient air. obtained product. Graphite: An allotrope of carbon, it is gray-black, opaque solid, with a density of 2.25 grams per cubic centimeter, a melting point of 3652°C, and a boiling point of 4827°C. It has stable chemical properties, corrosion resistance, and is not easy to react with chemicals such as acids and alkalis. At 687°C, it burns in oxygen to produce carbon dioxide.

(2) Carbon black is represented by the extent to which carbon black particles are aggregated into chains or grapes. Carbon black composed of agglomerates composed of the size, shape and number of particles in each agglomerate is called high-structure carbon black. Graphite is a transitional crystal between atomic crystals, metal crystals and molecular crystals. In the crystal, carbon atoms in the same layer form covalent bonds by sp2 hybridization, and each carbon atom is connected to three other carbon atoms, and six carbon atoms form a regular hexagonal ring on the same plane, stretching to form a sheet structure .

(3) Carbon black The pyrone structure can be detected in furnace black, which determines the basic nature of furnace black. Volatile content can determine the concentration of surface functional groups, and can also measure the polarity of carbon black.

Graphite is soft, black-gray, greasy, and can contaminate paper. The hardness is 1-2, and its hardness can increase to 3-5 along with the increase of impurities along the vertical direction. The specific gravity is 1.9-2.3. The specific surface area is concentrated in the range of 1-20m2/g, and its melting point is above 3000°C under the condition of cutting off oxygen. It is one of the most temperature-resistant minerals. It conducts electricity and heat.

The future development of graphite powder will continue to be needed, the demand will gradually rise, and the production capacity will continue to grow. Driving a number of industrial chains becomes a new type of energy-saving raw materials, especially now that society is gradually moving towards the new energy vehicle industry, the demand for lithium-ion batteries is extremely high, graphite powder has become an indispensable material.