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Graphite has the following special properties due to its special structure.

1) High temperature resistance: The melting point of graphite is 3850±50℃, and the boiling point is 4250℃, even after ultra-high temperature arc. Even by ultra-high temperature arc burning, the loss of weight is very small, and the coefficient of thermal expansion is also very small. The strength of graphite is strengthened with the increase of temperature, and at 2000℃, the strength of graphite is doubled. Its high temperature resistance is suitable for blast furnace.

2) Electrical and thermal conductivity: The electrical conductivity of graphite is one hundred times higher than that of general non-metallic ores. Thermal conductivity exceeds that of steel, iron

lead and other metallic materials. Thermal conductivity decreases with increasing temperature, even at very high temperatures, graphite becomes adiabatic. Thermal body. Graphite can conduct electricity because each carbon atom in graphite forms only three covalent bonds with other carbon atoms, and each carbon atom still retains one free bond.

Each carbon atom still retains one free electron to transfer charge.

(3) Lubricity: the lubricity of graphite depends on the size of graphite scales, the larger the scales, the smaller the coefficient of friction

The larger the scale, the lower the coefficient of friction, the better the lubrication performance.

(4) Chemical stability: graphite has good chemical stability at room temperature, and can resist acid, alkali and organic solvents. Corrosion of organic solvents.

(5) plasticity: graphite has good toughness and can be milled into very thin sheets.

(6) thermal shock resistance: graphite can withstand severe changes in temperature at room temperature without damage, temperature

When the sudden change, the volume of graphite does not change much and will not produce cracks.