Isotropic
graphite graphite crystallites chaotically oriented in the
isotropic structure of graphite materials. Usually refers to different
dimensions of less than 1.10 of graphite materials.
Isotropic graphite of carbon materials in 1960s, Toyo Carbon Co., Ltd. in 1962 with the isostatic pressing method developed isotropic graphite, the Corporation in cooperation with the Osaka industrial technology test ingredients, mixing molding, baking and other key processes, the commercial production in 1971, followed by the world’s industrialized countries have established a HIP equipment to study the production of isotropic graphite.
Performance
Isotropic graphite with high density, high strength, anisotropic than the small, wide grain size range, but also has the modulus and fracture stress of the medium-sized, long time to maintain a high elastic strain before breaking, under polarized light showed the characteristics of non-optically active, anti-wear performance, the opening of low porosity.
Application and development of internal uniformity due to the isotropic graphite, the direction of the anisotropy is small, mechanical strength, corrosion resistance and high temperature properties are better than normal graphite materials, these materials have been widely. For mechanical, chemical, metallurgical, electrical, atomic reactors and bio-carbon materials and manufacturing graphite seals, bearings, brushes, crucibles and EDM electrodes ideal material.
At present, the world’s industrial countries have completed the isotropic graphite industrialization, commercial production. The raw materials used to manufacture conventional carbon products such as coal tar pitch, petroleum asphalt, petroleum coke, pitch coke and synthetic resins, etc. can produce isotropic graphite. The bulk density of the isotropic graphite has reached 1.95 ~ 2.00g/cm3 different dimensions (α parallel to the vertical / α) is reduced from 1.20 to 1.05. Product development to large size, has produced large-sized products in φ1.5m x 3m.
Isotropic graphite of carbon materials in 1960s, Toyo Carbon Co., Ltd. in 1962 with the isostatic pressing method developed isotropic graphite, the Corporation in cooperation with the Osaka industrial technology test ingredients, mixing molding, baking and other key processes, the commercial production in 1971, followed by the world’s industrialized countries have established a HIP equipment to study the production of isotropic graphite.
Performance
Isotropic graphite with high density, high strength, anisotropic than the small, wide grain size range, but also has the modulus and fracture stress of the medium-sized, long time to maintain a high elastic strain before breaking, under polarized light showed the characteristics of non-optically active, anti-wear performance, the opening of low porosity.
Application and development of internal uniformity due to the isotropic graphite, the direction of the anisotropy is small, mechanical strength, corrosion resistance and high temperature properties are better than normal graphite materials, these materials have been widely. For mechanical, chemical, metallurgical, electrical, atomic reactors and bio-carbon materials and manufacturing graphite seals, bearings, brushes, crucibles and EDM electrodes ideal material.
At present, the world’s industrial countries have completed the isotropic graphite industrialization, commercial production. The raw materials used to manufacture conventional carbon products such as coal tar pitch, petroleum asphalt, petroleum coke, pitch coke and synthetic resins, etc. can produce isotropic graphite. The bulk density of the isotropic graphite has reached 1.95 ~ 2.00g/cm3 different dimensions (α parallel to the vertical / α) is reduced from 1.20 to 1.05. Product development to large size, has produced large-sized products in φ1.5m x 3m.
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