Multi-layer graphite heat conducting plate and preparation method thereof

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.

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...

AI Technical Summary

Problems solved by technology

However, the copper tube has a minimum process thickness, and for thin and light mobile phones, it cannot be made thinner

At the same time, the weight of the copper tube is also heavy, which makes the weight of the electronic product also heavy

It is difficult to form ultra-thin heat pipes, especially shaped pipes, which increases production costs

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