Special Properties of Graphite molecular structure

Due to the special Graphite molecular structure, it has the following special properties:

1. High temperature resistance of Graphite molecular structure: the melting point of graphite is 3850±50℃, and the boiling point is 4250℃. Even if it is burned by an ultra-high temperature arc, the weight loss is very small, and the thermal expansion coefficient is also small. The strength of graphite increases with increasing temperature, and at 2000°C, the strength of graphite doubles.

2. The electrical conductivity and thermal conductivity of Graphite molecular structure: the electrical conductivity of graphite is one hundred times higher than that of ordinary non-metallic minerals. The thermal conductivity exceeds that of metal materials such as steel, iron, and lead. The thermal conductivity decreases with increasing temperature, and even at extremely high temperatures, graphite acts as a thermal insulator. Graphite can conduct electricity because each carbon atom in graphite forms only 3 covalent bonds with other carbon atoms, and each carbon atom still retains 1 free electron to transmit charges.

3. Lubricity of Graphite molecular structure: The lubricating performance of graphite depends on the size of graphite flakes. The larger the flakes, the smaller the friction coefficient and the better the lubricating performance.

4. Chemical stability of Graphite molecular structure: Graphite has good chemical stability at room temperature, and is resistant to acid, alkali and organic solvent corrosion.

5. Graphite molecular structure plasticity: Graphite has good toughness and can be rolled into very thin sheets.

6. Thermal shock resistance of Graphite molecular structure: When graphite is used at room temperature, it can withstand severe changes in temperature without damage. When the temperature changes suddenly, the volume of graphite changes little and does not cause cracks.