A kind of graphene composite cold plate and preparation method thereof

Abstract

The invention relates to a graphene composite cold plate and a fabrication method thereof. The graphene composite cold plate comprises a composite cold plate body and a graphene composite film, wherein a sunken cooling cavity is formed in the top of the composite cold plate body, a needle-like array heat conduction post is arranged at a position, corresponding to a hot source, of the cooling cavity and is vertically arranged, and a graphene composite film is pasted and laid in the cooling cavity, penetrates through the needle-like array heat conduction post and is combined with a longitudinalcylindrical surface of the needle-like array heat conduction post in a heat conduction way. A macromolecular graphene composite film is arranged in an aluminum alloy cooling cavity with the needle-like array heat conduction post on the basis of the graphene composite cold plate, rapid conduction of the composite cold plate in a longitudinal direction can be achieved, the problems of poor longitudinal heat conduction and poor heat conduction capability of a planar high-heat conduction graphene composite cold plate are effectively solved, the longitudinal heat conduction capability of the graphene composite cold plate is improved, the cooling capability of the composite cold plate can be greatly improved, so that the comprehensive cooling performance of the composite cold plate is improved.

Description

technical field [0001] The invention relates to the field of reinforced printed boards in high power consumption environments, in particular to a graphene composite cold plate and a preparation method thereof. Background technique [0002] With the rapid development of electronic technology, the size of electronic components continues to shrink, and high-power electronic components will generate a lot of heat. If effective thermal management measures are not taken to transfer the heat, the components will be damaged or even damaged. Graphite is a good thermal conductivity material with layered structure and anisotropy, and its plane thermal conductivity can reach 150-1800W / (m·K). At the same time, the density of graphite is low, the theoretical density is only 2.2g / cm 3 , is a lightweight thermally conductive material with broad application prospects. [0003] Commonly used graphite films or graphite sheets include the following categories: 1) The first category, expanded ...

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Problems solved by technology

[0007] Aiming at the problems existing in the prior art, the present invention provides a graphene composite cold plate and a preparation method thereof. On the basis of the graphite composite cold plate, the polymer graphene composite film is installed on an aluminum plate with a needle-shaped array of heat-conducting pillars. In the alloy heat dissipation cavity, the rapid conduction of the composite cold plate in the longitudinal direction can be realized, effectively solving the problems of poor longitudinal heat transfer and insufficient thermal conductivity of the planar high thermal conductivity graphite composite cold plate, improving its longitudinal thermal conductivity, and making the heat dissipation of the composite cold plate The capacity has been greatly improved, thereby improving the overall heat dissipation performance of the composite cold plate

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