100 gram: €52
500 gram: €157
1 kg: €239

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Expandable Graphite, Purity: 99-99.5%, Size: 50 mesh

Description

Expandable graphite (also known as exfoliated graphite) is produced from the naturally occurring mineral graphite. The layered structure of graphite allows molecules to be intercalated in between the graphite layers. Through incorporation of acids, usually sulfuric acid graphite can be converted into expandable graphite. If expandable graphite is heated, the graphite flakes will expand to a multiple of their starting volume. The expanded flakes have a “worm-like” appearance and are generally several millimeters long.

Applications

• Flame retardant
• Graphite foil
• Expandable graphite is used in metallurgy to cover melts and moulds. The material serves here as an oxidation protection and insulator.
• Expandable graphite is included in the chemical processes for paints and varnishes.