EXPANDABLE GRAPHITE-HIGH PURITY

Expandable graphite is made from natural flake graphite through chemical or electro-chemical treatment process. Expandable graphite has all the unique characteristics of natural crystalline graphite with high temperature resistance, corrosion resistance, and self-lubricity. The expansion temperature starts at 150°C to 220°C and expansion volume can be as high as 400 times its original volume.

SUNGRAF is the most professional expandable graphite producer and now it is sole high purity expandable graphite supplier who can gurantee the quality of purity graphite.

INDUSTRIAL APPLICATION

1.Manufacturing graphite foil, graphite braided packings and other sealing products.
2.Lubricant additive.
3.Fire retardant additive in plastics and fire retardant foams for insulation

Benefits of expandable graphite as flame retardant:

1.Forms an intumescence layer with Thermal Radiation Shielding, with superior Heat Diffusion.
2.Stops or slows the spread of fire and toxic gases.
3.Easy to apply, cost Effective, satisfied performance with low adding levels.
4.Non-toxic, non-halogenated fire-stop additive.
5.Neutral surface pH makes compatible with any catalyst system.

Expandable graphite is one of the fastest growing markets along with Li ion batteries. It is the only graphite market to have experienced price increases over the last couple years and is largely based on XL flake material which is the strength of the Bissett Creek deposit. It involves treating XL flake graphite with a dilute acid solution and heating it to cause the flakes to split apart, expand and increase hundreds of time in volume. This material is pressed into sheets to create a foil which can be cut into shapes and used in many applications including thermal management in consumer electronics, high end gaskets that are heat and corrosion resistant, fire retardants, smart building products, flow batteries and fuel cells. Fuel cells are already a billion dollar industry with commercial buses, forklift trucks, standby power plants, etc. already in operation. There are commercial fuel cell cars now and many observers expect them to become more popular more quickly than EVs.

Because of the growth in demand, and declining production from Shandong Province, China, there are now shortages of large/XL flake concentrates. Prices and margins are high and new sources of supply are required.