Graphite powder is a kind of mineral resource powder with important composition. Its main component is simple carbon, which is soft, dark gray and greasy. Its hardness is 1~2, and it increases to 3~5 with the increase of impurity content in the vertical direction, and its specific gravity is 1.9 ~ 2.3 Under the condition of isolating air and oxygen, its melting point is above 3000℃, which is one of the heat-resistant mineral resources.
At room temperature, the analytical method of chemical knowledge, structure and properties of graphite powder is relatively systematic and stable, and it is insoluble in water, dilute acid, dilute alkali and organic solvent. The research work of materials science has certain safety performance of high-temperature resistant composite conductive network, which can be used as main materials for fire-resistant design, conductive functional materials and wear-resistant lubrication technical materials.
At different high temperatures, it reacts with oxygen to produce carbon dioxide or carbon monoxide. Among carbon, only fluorine can directly react with elemental carbon. When heated, graphite powder is more easily oxidized by acid. At high temperature, graphite powder can react with many metals to form metal carbides, and metals can be smelted at high temperature.
Graphite powder is a very sensitive chemical reaction material, and its resistance will change under different conditions. Graphite powder is a very good non-metallic conductive material. As long as graphite powder is stored in insulating materials, it will be charged like a thin wire, but the resistance value is not an accurate number. Because the thickness of graphite powder is different, the resistance value of graphite powder will also vary with the difference of materials and environment.
Post time: Apr-28-2023