Graphene

Graphene refers to a stable two-dimensional crystal formed by the covalent bonding between carbon atoms with a thickness of only one C-atomic layer. Structure: honeycomb shaped, Transparency: transparent, Thickness: 0.335nm

Compared with other organic polymer materials, graphene has a unique atomic structure and mechanical properties. Graphene has a theoretical Young's modulus of 1.0TPa and an inherent tensile strength of 130Gpa, making it one of the strongest materials known. It also has good toughness and can bend, earning it the title of "king of new materials".

Graphene (slurry) parameters

Test Item		Specification Standard	Unit	Measured value	Judgment result	Test method
Graphene		Thickness	nm	0.35~1.00	Comply with	TEM
		L/B	μm	5~12	comply with	SEM
		Appearance	Color	Bright black liquid	Comply with	Visual estimation
Solid content		1.6±0.05	%	1.60	ok	Gravimetric method
Impurity content	Fe	≤5	ppm	3.62	ok	ICP-OES test
	Co	≤5	ppm	0.61	ok
	Ni	≤5	ppm	0.21	ok
	Cu	≤5	ppm	0.02	ok
	Zn	≤5	ppm	0.09	ok
	Cr	≤5	ppm	0.09	ok

Conductivity and thermal conductivity index

Conductivity

Single layer graphene: room temperature conductivity can reach 10 ^ 6 S/m, resistivity as low as 10 ^ -6 Ω

Electron mobility: up to 200000 (v · S), more than 140 times that of silicon materials

Thermal conductivity

Theoretical thermal conductivity: 5300 W/m · K (room temperature) is 13 times that of copper and 2 times that of diamond. Actual measured values:

Actual measurement value: Due to differences in preparation process, there may be slight fluctuations, usually within the range of 5000-5300 W/m · K

Application field

Graphene high thermal conductivity gasket

Graphene conductive agent

Graphene coating

Graphene aluminum/copper composite material