Graphite powder has the following special properties due to its special structure:
1. High temperature resistant type of graphite powder: The melting point of graphite powder is 3850±50℃ and the boiling point is 4250℃. Even after ultra-high temperature arc burning, the weight loss is very small and the thermal expansion coefficient is also very small. The strength of graphite increases as the temperature increases. At 2000°C, the strength of graphite doubles.
2. Electrical conductivity and thermal conductivity: The electrical conductivity of graphite powder is one hundred times higher than that of ordinary non-metallic minerals. Thermal conductivity exceeds that of steel, iron, lead and other metal materials. The thermal conductivity decreases as the temperature increases, and even at extremely high temperatures, graphite becomes a thermal insulator.
3. Lubricity of graphite powder: The lubrication performance of graphite depends on the size of graphite flakes. The larger the flakes, the smaller the friction coefficient and the better the lubrication performance.
4. Chemical stability: Graphite powder has good chemical stability at room temperature and is resistant to acid, alkali and organic solvent corrosion.
5. Plasticity: Graphite powder has good toughness and can be grown into very thin flakes.
6. Thermal shock resistance of graphite powder: When graphite powder is used at room temperature, it can withstand drastic changes in temperature without being damaged. When the temperature suddenly changes, the volume of graphite will not change much and will not cause cracks.