Natural graphite flake is chemically treated to form Graphite
Intercalation Compound. This intercalation compound is then rapidly heated to decomposition. The result is a rapid expansion of the particle size. The bulk density of the worm-like graphite powders is about 0.003g/cc. Then they are formed into graphite sheets by rolling. expanded graphite sheet, flexible graphite sheet

Specification of expanded graphite rolling

Item	Unit	Value
Tolerance of density	g/cm3	-0.06~+0.06
Tolerance of thickness	mm	-0.04~+0.04
Carbon content	%	99
Tensile strength	MPa	4.5
Compressibility	%	>40
Recovery	%	>10
Sulphur content	ppm	<1100
Chlorine content	ppm	<45
Temperature	°C	-200~+600

Rolling sheet size:

Density(g/cm3)	Length(m)	Width(mm)	Thickness(mm)
0.8(or) 1.0(or)1.1	30,50,80,or other size	<=1500 recommend use 1000mm	0.2~1.0 recommend use 0.2, 0.25,0.3,0.4,0.5,0.6,0.75,0.8mm

 

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