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nature : also known as flexible graphite. Layered with graphite structure, alkali metals, halogen, metal halide, strong oxidizing acid oxygen can be embedded between layers, forming intercalation compounds. Graphite as raw materials, special chemical treatment to form intercalation compounds; At high temperatures, so that it rapid decomposition, the recurrence of inflation, the volume can be increased to several hundred times the original, said expanded graphite. The porous, flexible. Temperature range, the range between the -200-3600. Withstand neutron, gamma-and beta-rays such as the long-term exposure. At high temperature, high pressure or radiation conditions, not decomposed, deformation or aging. Chemical properties and stability. For sealing components, the separation of cryogenic hydrogen purification device, sulfuric acid recovery plant, the nuclear industry, such as boric acid pump under harsh conditions used. Also Crucible, insulation, linings, insulation and prevent vibration materials and catalyst carriers, adsorbents, bleaching agents. It is a promising new engineering materials. Weakness is intensity is not high enough.
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