Analyze the performance and industrial use of Expandable Graphite
Expandable Graphite is one of the most widely used flake graphite products in modern industry. Many products need to be completed with Expandable Graphite in the production process. The wide use of Expandable Graphite is closely related to its own properties. Today, graphene is leading you into the wonderful world of Expandable Graphite.
The Expandable Graphite is a loose porous wormlike substance made from natural flake graphite, hence also called graphite worm. Expandable Graphite is an extension of graphite products products, the main characteristics of Expandable Graphite is made of graphite unique heat dissipation performance and conductive performance that can supply all kinds of precision instrument of conductive and heat dissipation effect, easy to install, convenient processing, already beautiful practical effect. The Expandable Graphite has many advantages for industrial production:
1. The adsorption properties of Expandable Graphite are particularly good.
Due to the characteristics of the structure of the Expandable Graphite, the pore is developed and the large hole is mainly the main, so it is easy to adsorb large molecule material, especially non-polar molecule.
2. The Expandable Graphite has strong oxidation resistance and corrosion resistance.
Expandable Graphite in less than 450 ℃ in air oxidation; Besides aqua regia, concentrated nitric acid and fuming sulfuric acid and high temperature of potassium dichromate, potassium permanganate and other a few strong oxidizer, resistant to almost all chemical medium corrosion, for the vast majority of inorganic acid, alkali and salt.
3. The Expandable Graphite is highly radioactive.
The molecular characteristics of the Expandable Graphite can withstand the long-term irradiation of neutron ray, b-ray and gamma-ray radiation and not decompose, deformation and aging.
4. The Expandable Graphite has a strong and high temperature resistance.
A very wide scope of heat-resistant, expansible graphite can bear - ultra-low temperature of 200 ℃ to 200 ℃ high temperature. As a sealing material, in the oxidation medium or inert gas, when used within the range 200-2500 ℃ high temperature does not soften, stay cold brittle, especially because of the pressure and high temperature alternating or not trembled, seal failure occurs.
V. Expandable Graphite has a strong surface activity.
Due to the rapid increase of Expandable Graphite surface free energy surface activity enhanced, thus has strong adsorption and self-adhesive, even in the case of without any adhesive can be directly pressed into various products.
There is a strong anisotropy of the Expandable Graphite.
The expansion graphite has excellent anisotropy in heat transfer, conduction and thermal expansion. The thermal conductivity of the plane layer is 28 times greater than the thickness, and the conductivity is 500 times.
It is up to these advantages that the Expandable Graphite is hot in industry. The concrete can do 30 micron expansible graphite graphite paper, this product USES a very wide range, can be used as a mobile phone, such as today's smart phones, laptops, TV, and other related products, USES a very wide range. With many years of experience in producing and processing Expandable Graphite, graphite has its own mining resources and hopes that customers from all over the country will visit the factory.