Use cases ·

Applications of expanded graphite for industry

Graphite is one of the allotropic forms of carbon and to obtain expanded graphite purified graphite flakes are exposed to a process called exfoliation The graphite exfoliation process consists of the expansion of crystalline graphite flakes by contact with sulfuric acid, thus forming a worm-shaped flake expansion.

Applications of expanded graphite for industry

Graphite is one of the allotropic forms of carbon and to obtain expanded graphiteurified graphite flakes are exposed to a process called exfoliation. The graphite exfoliation process consists of the expansion of crystalline graphite flakes by contact with sulfuric acid, thus forming a worm-shaped flake expansion.

After a washing process, the expanded graphite is compressed or rolled to form continuous rolls or sheets of different gauges or thickness. It is worth mentioning that the bonding of laminated graphite is mechanical and usually without binders.

However, there are applications where the sheets are compacted with a steel core to give stability to the expanded graphite. Some applications include gaskets for combustion engines or sealing gaskets for pipes in the chemical industry ... . Finally, the sheets are cut to size for your final application.

Common applications of expanded graphite

The applications of this material are diverse, due to the properties of graphite, but some of the main ones are:

  • aphite sealing sets are used for fluid and gas handling in applications where good chemical shock resistance is required.
  • On the other hand, panded graphite tapes a applied in the manufacture of sealing gaskets, dulled rings, as well as pumps and valves working in cryogenic temperatures or at very high temperatures.
  • They are also used in aphite gaskets and packing. this sense, a high resistance to high pressures and temperatures is obtained, as well as a great sealing material even if the surfaces have imperfections.
  • That is why it is very frequently used in anges, pumps, filling for spiral wound gasketsexchangers, etc.
  • Due to its characteristics and properties, expanded graphite is used in applications in the chemical industry, power generation, nuclear plants, automotive industry for the production of gaskets and in lithium batteries.

As mentioned above, expanded graphite and the parts made with it offer high mechanical resistance, as well as resistance to most chemical agents.

They are also resistant to high temperatures, withstanding temperatures above 1000 to 1500 degrees Celsius depending on the purity of the graphite in inert atmosphere conditions.

In ESGRAF we have a great variety of graphite with which we can offer our customers smooth and corrugated tapes for packing pipes and ducts, raw material for the elaboration of gaskets, gaskets, rings and mechanical seals of graphite, etc.