• Expandable Graphite is a carbon material in which sulfuric acid are intercalated between the layers of Flake Graphite.  The layers of graphite (graphene) are bonded by interatomic bond with a weak vertical force, and it can insert liquid between the layers.  The layers are expanded by the vaporization energy of the liquid sulfuric acid inserted between the layers at applying heat of 100 to 300°C, and the volume expands to 200 times or more.

Main Applications

• Expandable Graphite is widely used as flame retardant.  It is a halogen-free substance and is added to and compounded into building materials and automobile parts.

• Developing to various thermoplastic resins, rubbers, and elastomers, the applications are expanding as fireproof, fire-resistant and providing flame-retardant property.

List of Expandable Graphite Products

Product Name	Fixed Carbon (%)	Ash Content (%)	Expansion Ratio (cc/g)	Expansion Start Temperature (℃)	Granularity (%)	PH
EXP-S120K	95 or more	5	200	120	50μm 75	6-8
EXP-50S120N	95 or more	5	250	120	50μm 75	6-8
EXP-50S150	95 or more	5	250	120	50μm 75	6-8

Expandable Graphite Representative Products

Product Name	Fixed Carbon (%)	Ash Content (%)	Expansion Ratio (cc/g)	Expansion Start Temperature (℃)	Granularity (%)	PH
EXP-50KK	95 or more	5	200	260-280	+50μm 75	６-８
EXP-50HO	95 or more	5	200	220	+50μm 75	６-８
EXP-80S220	99 or more	1	200	200	+80μm 75	６-８
EXP-50SL	98 or more	2	300	200	+50μm 75	６-８
EXP-150S	95 or more	5	50	200-220	-150μm 60	６-８
EXP-200S	95 or more	5	30～50	200-220	-200μm 60	６-８
EXP-50S	98 or more	2	250	170-200	+50μm 75	６-８
EXP-80S	98 or more	2	200	180	+80μm 75	６-８
EXP-100S	95 or more	5	130	180	-100μm 60	６-８
EXP-32S160	95 or more	5	400	160	+50μm 75	６-８
EXP-50S160	98 or more	2	300	160	+50μm 75	６-８