Expandable Graphite
Size
0.50mm or 0.106mm, etc
Package
25 kg small bags into ton bags
Origin
China
Features
Preservative/Electrical and thermal conductivity, etc.
Application
Fireproof sealing element, flame retardant, refractory brick, etc.
Expandable graphite crystal is a typical layered carbon material. Other heterogeneous particles such as atoms, molecules, ions, and even atomic clusters are inserted into the interlayer of crystalline graphite by physical or chemical methods to form a new layered compound, which is called graphite interlayer compound, namely expandable graphite.
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Expandable graphite is a kind of flexible graphite product made of high-quality natural phosphorus sheet graphite produced by our company. It is an ideal new sealing material and is widely used in dynamic and static sealing of petroleum, chemical, electrical, aviation, automobile, ship, and instrument industries.
Expandable graphite high-temperature instantaneous processing, become vermicular scaly, expandable volume 100-400 times, that expanded graphite remains the nature of the natural graphite, and it has good plasticity, flexible, ductility, and sealing, is all sorts of graphite plate, the seal of high-quality raw materials can also be used to a new type of powder metallurgy industry, heating agent.
Expandable graphite is also known as flexible graphite. Using natural flake graphite as raw material, through special chemical treatment, cambium interlayer compound; After high-temperature treatment, the rapid decomposition, expansion again, the volume can be increased to hundreds of times the original, known as expanded graphite. Loose porous, elastic. Wide temperature range, between -200-3600℃. Can withstand neutron, γ-, β- and other long-term radiation. It works under high temperature, high pressure, or radiation, without decomposition, deformation, or aging
Expandable graphite is scale graphite after pickling, after insertion treatment than before the graphite expansion of about 300 times, can do coil and flexible graphite raw materials. Expandable graphite refers to the natural flake graphite after acidification treatment, forming graphite interlaminar compounds, washed to neutral drying after rapid heating, so that it expands into worm-like substances. Also known as graphite worm. Expanded graphite as a loose porous carbon material, its surface, and internal pore structure are very developed, the specific surface area can reach 50-200m2/g, is an excellent adsorption material (expanded graphite has the characteristics of low density, lightweight, and high and low-temperature resistance, corrosion resistance, oxidation resistance. It also has high chemical stability and non-toxic characteristics.
In daily life, there are many places, such as hybrid engines or solid fuel ramjets and other propulsion devices, expandable graphite is used. Expandable graphite has a wide range of uses, so it is a valuable reserve resource for all countries. It plays an important role in conductive and flame retardant industries. One of the important applications of expandable graphite is to prepare conductive nylon and expandable graphite nanocomposites.
Flame retardant expandable graphite is a kind of expandable graphite. It is an expandable graphite product obtained by modifying natural phosphorus flake graphite. It is an ideal flame retardant material with a high expansion ratio, good dispersion, and better particle size distribution.
The expansion rate is greater than 300ml/g is the standard flame retardant products, with dispersibility, reasonable particle size distribution, suitable for polyurethane foam, graphite polystyrene board, EPS, fire sealing strip, polystyrene insulation board, and so on; The expandable graphite with expansion rate greater than 230mL /g has dispersibility at initial expansion temperature >250℃, which is suitable for XPS extruded plate and other extruded products. Low-temperature flame retardant products with initial expansion temperature ≤165℃ are mainly suitable for export and high-end flame retardant customers with high expansibility.
Therefore, there are many applications of expandable graphite, and it is also used more and more in life. It is also the national strategic reserve resource. We should be more reasonable and cherish the use of expandable graphite.
