Description of Carbon Bead
Carbon beads are spherical carbon particles with sizes from 1 to 80 microns. They are produced during the refining of spinning pitch. Three purity grades exist: green, carbonised and graphitised powders. They are used as composite materials to deliver measured electrical conductivity, thermal conductivity and other specific properties.
Synonyms: Mesokohlenstoff-Mikroperle, Kohlenstoffperle, kugelförmige Kohlenstoff-Feinpartikel, Carbosphäre, kugelförmiges Kohlenstoffpulver, kugelförmige Kohlenstoffpartikel, kugelförmige runde Kugel, mcmb.
CAS-Nr.: 7782-42-5.
Properties:
Green Powder: C = 93,0 to 94,0%
Carbonised Powder: 99,0%
Graphitised Powder: 99,9%
Spezifications of Carbon Beads
Ash Content
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0.1 - 0.3
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True Specific Gravity
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1.3 - 2.2
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Electrical Resistivity
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Varies according to grade
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Shore Hardness
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70 - 120
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Applications of Carbon Beads
Special carbon materials are used for EDM electrodes, seals, hot pressing tools and casting moulds.
Resin composite materials find use in lining components, PTC heaters, electrically conductive paints and varnishes, specialised electrodes, EMI shielding materials and heat-resistant rubber.
Ceramic composite materials serve in filters, heat-resistant products, sliding materials and lightweight ceramics.
Surface modification utilises high-performance activated carbon and materials for intercalation compounds.