Expandable Graphite Powder

After being treated momentarily under high temperature ,flake graphite becomes expandable graphite which can expand 100-400 times in volume and still remains the performances of natural flake graphite .Being vermicular ,loose and porous ,its heat-resistant range under the oxygen-isolated environment is from -200°C to 3000°C.Characterized by good expandability and chemical stability under conditions of high temperature,high pressure and radiation ,it is widely used for the dynamic seal and the static seal in petroleum industry,chemical industry,electric industry,space industry,automobile industry,ship industry and instrument industry .

Technical Index of expandable graphite with ultra-low Sulphur

Specification	Fixed Carbon	Ash	Volatile	Expansion Ratio	Sulphur content	PH Value	Moisture	Particle Size (Oversize)
DL32	90-99.9	≤10	≤10	200-400	≤0.03	4-6	≤1.0	≥80
DL50				200-350
DL80				150-250
DL100				80-150

Technical Index of commen expandable graphite

Specification	Fixed Carbon	Ash	Volatile	Expansion Ratio	Sulphur content		PH Value	Moisture	Particle Size (Oversize)
					Before expanding	After expanding
DL32	90-99.9	≤10	≤12	200-400	≤2.2	≤1500	4-6	≤1.0	≥80
DL50				200-350
DL80				150-250
DL100				100-200