The advantages of natural graphite mainly include the following aspects:
High electrical conductivity and thermal conductivity: Natural graphite has good electrical conductivity, which is one hundred times higher than that of general non-metallic minerals, and can maintain excellent electrical conductivity even at high temperatures. In addition, the thermal conductivity of natural graphite is also better than many metal materials, especially at high temperatures, its thermal conductivity decreases with increasing temperature, and it even becomes an insulator.
High temperature resistance: The melting point of natural graphite is 3850±50℃, and the boiling point is 4250℃. Even under ultra-high temperature arc burning, the weight loss is very small, and the thermal expansion coefficient is also very small. At 2000℃, the strength of natural graphite will double.
Chemical stability: Natural graphite has good chemical stability at room temperature and is resistant to acid, alkali and organic solvent corrosion. It begins to be oxidized at temperatures above 500℃, so it will not react with organic/inorganic acids, alkalis or solvents under normal conditions.
Lubricity: Natural graphite has excellent lubrication properties, and its lubrication properties depend on the size of the graphite flakes. The larger the flakes, the smaller the friction coefficient and the better the lubrication properties.
Rich resources: Natural graphite has a complete range of ores and is widely distributed. my country's main reserves are concentrated in Heilongjiang and other places, with abundant reserves.
Cost-effectiveness: The processing technology of natural graphite is relatively simple and the cost is low, which makes it more economical in some applications.