Expandable Graphite Development

Release Date:

2020-03-17

The above is some knowledge about expandable graphite for your reference. If you have any questions or need to purchase products, please feel free to call us!

Graphite crystals have a hexagonal net planar layered structure composed of carbon elements. Carbon atoms on the layer plane are bonded by strong covalent bonds, while layers are bonded by very weak van der Waals forces, and the interlayer distance is relatively large. Therefore, under appropriate conditions, various chemical substances such as acids, alkali metals, and salts can be inserted between graphite layers and combine with carbon atoms to form a new chemical phase—Graphite Intercalation on Compounds (GIC). When this interlayer compound is heated to an appropriate temperature, it can instantly and rapidly decompose, producing a large amount of gas, causing the graphite to expand along the axial direction into a worm-like new substance, namely expandable graphite. This unexpanded graphite intercalation compound is what is known as Expandable graphite 。
Expandable graphite First discovered by the German Schaufautl. In 1841, Schaufautl immersed natural graphite in a mixture of concentrated HNO3 and concentrated H2SO4. After several hours, he removed and dried it, finding that the graphite had expanded. Union Carbide Corporation in the United States first applied for a patent for expandable graphite manufacturing technology in 1963 and began industrial production in 1968 Moxierite production in 1968
The above is Expandable graphite some knowledge content for your reference. If you have any questions or need to purchase products, please feel free to call!

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