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The Properties And Application of expanded graphite

2020-11-30 11:31

Description

What is expanded graphite?


As a new type of functional carbon material, expanded graphite (Expanded Graphite, referred to as EG) is a loose and porous worm-like substance obtained from natural graphite flakes through intercalation, washing, drying, and high temperature expansion. In addition to the excellent properties of natural graphite, such as resistance to cold and heat, corrosion resistance, and self-lubrication, EG also has softness, compression resilience, adsorption, ecological environment coordination, biocompatibility, and radiation resistance that natural graphite does not have. And other characteristics. Expanded graphite can instantly expand 150-300 times in volume when exposed to high temperature, changing from flake to worm-like, resulting in a loose structure, porous and curved, expanded surface area, increased surface energy, and enhanced adsorption of flake graphite. Vermicular graphite can be embedded in itself. Together, this increases its flexibility, resilience and plasticity.

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The application of expanded graphite:


Because expanded graphite not only retains the excellent properties of natural graphite, such as high temperature resistance, corrosion resistance, radiation resistance, and conductivity, but also has many unique excellent properties, such as flexibility, resilience, self-adhesiveness, impermeability, adsorption and Low density and other characteristics, so it is widely used in petroleum, chemical, atomic energy, electric power, pharmaceuticals, etc. With the progress of science and technology and the development of high technology, expanded graphite, a new engineering material, has gradually replaced certain metal materials and organic synthetic materials in high-tech fields such as high speed, corrosion resistance, wear resistance and energy saving.