Expandable Graphite

Specifications

Expandable graphite is a synthesized intercalation compound of graphite that expands or exfoliates when heated. Once heated, it results an increase in the volume of up to 400 times, a lowering of bulk density, and approximately a 10-fold increase in surface area. Then it’s compressed into a highly cohesive flexible sheet.
Another principal application is as a flame retardant. As a result of the heat of a fire the graphite expands and creates an intumescent layer on the surface of the material. This retards the spread of fire and minimizes one of the most harmful effects of combustion: the creation of toxic gases and fumes.
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.
Our Regular Flake Graphite is the right solution for:

Graphite Foil, Sheet, Roll, Gaskets.

Fire Retardant.

Conductive Additive.

Graphene.

Typical Grades

Grade Name	Mesh	Expansion Ratio (cc/g)	Purity (%)	Moisture (%)	PH	Sulfur (ppm)	Onset Temp (°C)	Application
HS555	+50	250:1	95-97	<1	6-9	*	160-180	PU foam, Bituman.
HS855	+50	250:1	98-99	<1	6-9	*	160-180	PU foam, Bituman.
HS955	+50	250:1	99-99.5	<1	6-9	*	160-180	PU foam, Bituman, for application require least instruments damage.
HS085	+80	250:1	90-95	<1	6-9	*	160-180	PU foam, EPS foam, XPS foam, sealing strip.
HS585	+80	250:1	95-97	<1	6-9	*	160-180	PU foam, EPS foam, XPS foam, sealing strip.
HS055	+50	250:1	90-95	<1	6-9	*	160-180	PU foam, EPS foam, XPS foam, sealing strip.
HS988	+80	180:1	99-99.5	<1	6-9	<1500	*	Graphite foil, roll, gaskets.
HS980HP	+80	200:1	99.5-99.8	<1	6-9	<1500	*	Graphite foil, roll, gaskets.
HS980UHP	+80	200:1	>99.9	<1	6-9	<1500	*	Battery.
HS557	+50	270:1	95-97	<1	6-9	*	160-180	Steel oxygen protection.
HS611	-100	100:1	96-98	<1	6-9	*	160-180	Fireproof textile.
HS223	-200	30:1	92-95	<1	6-9	*	160-180	Thin coating.
HS5HE	+50	350:1	95-97	<1	6-9	*	160-180	Collar pillar.
HS9HE	+50	350:1	99-99.5	<1	6-9	*	160-180	Collar pillar, for application require least instruments damage.
HS558HT	+50	180:1	95-97	<1	6-9	*	220	Mixing, extruding or processing at higher temperatures. Used as fire-retardant additive in PE, PP, and HIPS.
HS558UHT	+50	180:1	95-97	<1	6-9	*	250	Processing temperatures are very high. Used as fire-retardant additive in PE, PP, and HIPS.

- Special grades with different specs are also available on request. Please contact us for details.