Characteristics of graphite powder

Graphite powder has the below characteristics because of its special structure:

1.High temperature resistance:

The melting point of graphite powder is 3850±50℃ and its boiling point is 4250℃. Even if after being burned by ultra-high temperature arc, the weight loss is very tiny, and the thermal expansion coefficient is also very small. The strength of graphite increases with the increase of temperature. At 2000℃, the strength of graphite doubles compare with the original one.

2.Electrical and thermal conductivity:

The electrical conductivity of graphite is one hundred times higher than that of general non-metallic minerals. The thermal conductivity better then that of metal materials , for instance, steel, iron, and lead. The thermal conductivity decreases with the increase of temperature. Even at extremely high temperatures, graphite becomes an insulator.

3. Lubricity:

The lubricity of graphite rely on the dimension of the graphite flakes. The larger the flakes, the smaller the friction coefficient and the better the lubricity.

4.Chemical stability:

Graphite has good chemical stability at room temperature and is resistant to acid, alkali, and organic solvent corrosion.

5.Plasticity:

Graphite has good toughness and can be connected into very thin foliated structure.

6.Thermal shock resistance:

When used under room temperature, graphite powder can withstand drastic changes in temperature without being damaged. When the temperature changes suddenly, the volume of graphite powder does not change much and no cracks will occur.