200 Expansion Rate High Carbon Expandable Graphite Powder Price

Product Description

Our material Advantages:

High temperature resistant, good low temperature resistance, corrosion resistance, and thermally conductive, etc., in addition, graphite, expanded graphite is also called a worm worm between gears mesh, expanded graphite formation plate strip, has a good compressibility, resilience and low stress relaxation rate.
It can be used for various dynamic and static seals in petrochemical, electric power, metallurgy and machinery industries, and shows the advantages of low cost, low energy consumption, long service life and good effect.

200 expansion rate high carbon expandable graphite powder price

Product discription: 

Expandable graphite, also known as flexible graphite, is made of high-quality natural flake graphite, which is processed by high temperature and scaly into worm-like shape. The volume can be expanded by 100-400 times. This expanded graphite still retains the properties of natural graphite and has good properties. Forming plasticity, flexibility, ductility and sealing, it is an ideal new sealing material and high quality raw materials for various graphite sheets. It is a dynamic seal in the petroleum, chemical, electric, aerospace, automotive, marine and instrumentation industries. It has a wide range of applications and can also be used as a new type of mold flux and heat generation agent for the metallurgical industry.

 

Application:

As the expandable graphite has the ability of anti destruction and high expansion rate in high temperature, it can be used as an effective intumescent flame retardant material in the composition of fire-proof package, plastic fire-proof plugging material and fire-proof ring for building fire-proof plugging (such as sealing building pipes, cables, wires, gas pipes, gas pipes, etc.) Air duct through the hole, etc. The fine particles of expandable graphite can be added into the common coatings to produce a better flame retardant and antistatic coating, and improve its high temperature resistance and fire resistance. A large number of light non combustible carbon layers formed in the fire can effectively block the heat radiation to the substrate and effectively protect the substrate. In addition, because graphite is a good electric conductor, the coating can prevent the accumulation of static charges, and can be used in oil storage tanks to achieve the dual effect of fire and static electricity. Fireproof board, fireproof paper, anti-corrosion and high temperature resistant board: expandable graphite layer is lined on the metal base, carbonization bonding layer is between the expandable graphite layer and the metal base, and carbonization protection layer is covered outside the expandable graphite layer. It has the properties of corrosion resistance, high temperature resistance and high pressure resistance. At the same time, it is resistant to heat shock and can be used normally at low temperature. It is not afraid of fast cooling and fast heating, and has excellent heat conductivity. The service temperature is - 100 ~ 2000 ºC. It has the advantages of wide application, easy manufacture and low cost. In addition, the graphite paper formed by high temperature expansion of expandable graphite is also used in places of fire prevention and insulation.


Physical and chemical index:

Delivery : 10-25 days after advance payment
Packing:  100g/bag, 500g/bag, 1kg/bag, according to customer's requirements.

Material characteristics:

1) High temperature resistant type: the melting point of graphite is 3850 ± 50 ºC, and the boiling point is 4250 ºC. Even if the graphite is burned by ultra-high temperature arc, the weight loss is very small, and the coefficient of thermal expansion is also very small. The strength of graphite increases with the increase of temperature. At 2000 ºC, the strength of graphite is doubled.

2) Conductivity and thermal conductivity: the conductivity of graphite is 100 times higher than that of ordinary non-metallic minerals. The thermal conductivity exceeds that of steel, iron, lead and other metal materials. The thermal conductivity decreases with the increase of temperature. Even at very high temperature, graphite becomes an insulator.

3) Lubricity: the lubricity of graphite depends on the size of graphite scale. The larger the scale is, the smaller the friction coefficient is, and the better the lubricity is.

4) Chemical stability: graphite has good chemical stability at room temperature, and can resist acid, alkali and organic solvent corrosion.