A graphene heat sink

Abstract

The graphene heat sink provided by the invention comprises a heat sink and a graphene composite layer, wherein the heat sink is electrified to generate heat, and the graphene composite layer has excellent heat dissipation performance and can dissipate heat generated by the heat sink. The heating sheet and the graphene composite layer are alternately arranged and connected in series. The graphene composite layer comprises a first graphene layer, a second graphene layer and a porous graphene layer, wherein the porous graphene layer is positioned between the first graphene layer and the second graphene layer, and the first graphene layer and the second graphene layer are respectively closely bonded with the heating sheets on both sides of the graphene composite layer, so that the heat conduction efficiency is high; And the porous graphite layer is positioned between the first graphene layer and the second graphene layer, and the porous graphite layer has interconnected and open pores, sothat the porous graphite layer has extremely high specific surface area and therefore has good heat conductivity. The graphene heat conduction radiator structure of the invention has the advantages offast heat conduction and dissipation, easy manufacture, low cost and convenient operation and maintenance.

Description

technical field [0001] The invention belongs to the technical field of graphene radiators, and in particular relates to a graphene heat conduction radiator. Background technique [0002] Graphene is a quasi-two-dimensional material with ultra-light, ultra-thin, ultra-strong and ultra-large specific surface area, with a surface density of about 0.77mg / m 2 , the thickness of single-layer graphene is about 0.34nm, the toughness of graphene is excellent, the elastic modulus is 1.0TPa, the microscopic strength can reach 30GPa, which is more than 100 times that of the traditional one, and the theoretical specific surface area is 2630m 2 / g, and has very high electrical and thermal conductivity, and the horizontal thermal conductivity at room temperature is about 5×10 3 W / m·K, so it has been used in the field of radiators, and uses its excellent thermal conductivity to achieve a good heat dissipation effect. Most of the existing graphene heat sinks are formed by coating graphene ...

AI Technical Summary

Problems solved by technology

However, the preparation process of graphene coating is relatively complicated and time-consuming, and the binder used in the coating will affect the heat dissipation performance of graphene

And in the prior art, the high thermal conductivity of graphene has not been combined with heating elements to make it used in heating fields, such as ovens, etc.