Multi-layer graphite heat conducting plate and preparation method thereof

A technology of graphite heat conduction and graphite flakes, applied in chemical instruments and methods, modification and lamination through conduction and heat transfer, etc., can solve problems such as heavy weight of copper tubes, difficulty in forming special-shaped tubes, heavy weight of electronic products, etc., and achieve high The effect of thermal conductivity

CN109693427AInactive Publication Date: 2019-04-30GUANGDONG SUQUN NEW MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-04-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a multi-layer graphite heat conducting plate and a preparation method thereof, wherein the preparation method comprises the following steps: selecting a plurality of high heatconducting graphite sheets according to the set thickness, and pasting the graphite sheets together to form a graphite heat conducting plate by a thin surface glue; and cutting the graphite heat conducting plate into a set shape, placing the graphite heat conducting plate in a deposition device, taking a macromolecular material as a deposition medium, carrying out CVD chemical vapor deposition, and generating an insulating macromolecular thin film on the surface of the graphite heat conducting plate, wherein the deposition thicknesses of the macromolecular thin films on the upper surface, thelower surface and all sides of the graphite heat conducting plate are the same. The invention has certain bending performance and high thermal conductivity, can be made into various shapes, and meetsuse of various types of environmental spaces.
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Description

technical field

[0001] The invention belongs to the technical field of graphite heat conducting plates, in particular to a multilayer graphite heat conducting plate and a preparation method thereof. Background technique

[0002] Graphite heat conduction plate has excellent thermal conductivity, and its heat conduction speed is very fast, and it has the characteristics of high heat flux. At the same time, the graphite heat conduction plate also has electrical conductivity. Therefore, in order to ensure insulation during application, the graphite heat conduction plate needs to be insulated. At present, the heat dissipation of electronic products such as mobile phones and tablet computers uses graphite heat conduction plates and heat dissipation copper pipes.

[0003] A single graphite heat conduction sheet is usually very thin. In order to meet the thermal conductivity, it is usually necessary to combine multiple graphite heat conduction sheets to form a whole graphite heat c...

Examples

Embodiment Construction

[0021] In order to further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] The invention discloses a preparation method of a multilayer graphite heat conducting plate, comprising the following steps:

[0023] According to the set thickness, select a number of high thermal conductivity graphite sheets, and use thin surface glue to paste each high thermal conductivity graphite sheet together to form a graphite heat conduction plate. There is no limit to the specific number of graphite sheets, and the corresponding number is selected according to the required overall thickness. The graphite flakes can be natural graphite flakes, synthetic graphite flakes or graphene flakes.

[0024] Cut the graphite heat conduction plate into a set shape, which can be regular or irregula...