How do you make graphite expandable?

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Expandable and Exfoliated graphite both are made of the naturally occurring mineral graphite. Molecular can be embedded between layers of graphite because graphite has a layered structure. Typically, graphite sulfurate can be made into expandable graphite with the addition of acid. The graphite sheet can expand up to twice its volume if heated. The main products available on the market have a starting temperature in the 200-degree range. Flattened flakes can appear “worm-like” and may be several millimeters in length.

How is expandable graphite utilized?
Flame retardant agent
Flame retardant is one of the most important uses of expandable graphite. Exposed to heat, expandable graphite expands and forms a layer of expansion on its surface. This helps to slow down fire spreading and reduces dangers from smoke and toxic gases.

Graphite foil
Expanded graphite can also be compressed to create foil. These can be used to make radiators, seals, or radiators which are resistant to heat and chemical.

Expandable Graphite for Metalurgy
The use of expandable graphite in metalurgical to cover melting and moulds is another reason. It is also used in metallurgy as an insulator and oxidation protectant.

Expandable graphite to chemical industry
Expandable graphite can be used in paints or varnishes.

Make graphite more expandable.
Natural graphite is treated with acid and an oxidant bath to make expandable graphite. Common oxidants include hydrogen peroxide (or potassium permanganate) and chromic acids. As the compound to add, concentrated sulfuric acid (or nitric) is most commonly used. This reaction occurs at temperatures between 30°C and 130°C for about 4 hours. After the reaction, the flakes should be rinsed off with water before being dried. The graphite’s production conditions as well the particle size will affect both the temperature of the initial and subsequent expansion. Temperature and expansion rate are affected by the quality of graphite.

What three kinds of graphite are there?
Graphite comes in two forms: synthetic graphite (natural graphite) and regular graphite.
Three types of natural graphite exist. All three are made of graphite of natural origin. The three main forms of natural graphite are flake graphite (amorphous), flake graphite (crystalline veined), and flake graphite (flake graphite). Each has its own characteristics that make them suitable for specific applications.

Why is expandable graphite so important?
The graphite layer structure allows for molecules to be interwoven between layers. As intercalation agents, sulfur compounds and nitrogen compounds are often used. The heat causes these layers to separate and then the graphite sheet expands.

Graphite powder Price
Price is affected by many things, such as the demand and supply in the market and industry trends. Economic activity and market sentiment are also important.
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How can I purchase graphite?
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