Source: Shenzhen Waldorf Carbon Technology Co., Ltd. Popularity: 15 Published: 2017-06-20 17:09:21 【Small and medium-sized】
Graphite function:
1) high temperature type: graphite melting point of 3850 ± 50 ℃, boiling point of 4250 ℃, even by ultra-high temperature arc burning, the weight loss is very small, thermal expansion coefficient is also very small. Graphite strength is enhanced with increasing temperature, doubling the graphite strength at 2000 ° C.
2) conductive, thermal conductivity: graphite conductivity than the general non-metallic mine one hundred times higher. Thermal conductivity than steel, iron, lead and other metal materials. Thermal conductivity decreases with increasing temperature, even at very high temperatures, graphite into a thermal insulation. Graphite can be conductive because each carbon atom in the graphite and other carbon atoms only form three covalent bonds, each carbon atom still retains a free electron to transfer charge.
3) Lubrication: graphite lubrication performance depends on the size of graphite scales, the larger the scale, the smaller the coefficient of friction, the better the lubrication performance.
4) Chemical stability: graphite at room temperature has good chemical stability, acid, alkali and resistance to organic solvent corrosion.
5) Plasticity: graphite toughness is good, can be a thin film.
6) thermal shock resistance: graphite at room temperature when used to withstand the dramatic changes in temperature without damage, the temperature mutation, the graphite volume change is not, will not produce cracks.
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