Artificial graphite heat radiation substrate and making method thereof

A heat-dissipating substrate and artificial graphite technology, applied in graphite, chemical instruments and methods, lamination devices, etc., can solve the problems of inability to save materials, poor thermal conductivity, complicated manufacturing process, etc., and achieve favorable processing and mass production. Effects of material cost reduction and equipment cost reduction

Inactive Publication Date: 2014-05-07
HUGETEMP ENERGY
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  • Claims
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Problems solved by technology

[0006] 1. The chemical process requires chemical materials and related equipment, and the process is complicated and expensive
[0007] 2. The formation of massive graphite with a large thickness r

Method used

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  • Artificial graphite heat radiation substrate and making method thereof
  • Artificial graphite heat radiation substrate and making method thereof
  • Artificial graphite heat radiation substrate and making method thereof

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] refer to figure 1 and figure 2 , in the first embodiment of the present invention, the manufacturing method of the artificial graphite heat dissipation substrate 100 mainly includes a carbonization step 101, a graphitization (form of a film) step 102 and a compression shaping step 103, each step is described as follows.

[0027] Carbonization step 101: In an inert gas environment, apply a pressure not higher than 0.1 kg / cm2 to the sheet-shaped polymer substrate and gradually increase the temperature to obtain a condensed carbonized film.

[0028] In this embodiment, a sheet-shaped polyimide (polyimide) film is heat-treated in a nitrogen atmosphere, and the polyimide film is heated from room temperature to Temperature to 1000 degrees Celsius, and apply a pressure between 0.01 to 0.1 kg / cm2 to obtain a carbonized film; it should be noted that ...

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Abstract

A making method of an artificial graphite heat radiation substrate comprises the following steps: applying a pressure of 0.1kg/cm<2> or less to a polymer sheet in inert gas environment, and gradually heating to obtain a condensed carbonization membrane; gradually heating the condensed carbonization membrane to obtain a graphite membrane composed of a plurality of layers of graphene; and stacking a plurality of the graphite membranes along a stacking direction, and carrying out compressing fixation of the graphite membranes by a predetermined pressure in the stacking direction. Compared with present making methods, the making method disclosed in the invention has the advantages of process simplification, production cost reduction and easy processing; and the artificial graphite heat radiation substrate made through the making method has a good heat conduction effect.

Description

technical field [0001] The invention relates to a heat dissipation substrate and a manufacturing method thereof, in particular to an artificial graphite heat dissipation substrate and a manufacturing method thereof, which are manufactured by a physical thermocompression method, save materials, and have high thermal conductivity. Background technique [0002] At present, there are several methods of making artificial graphite, some are made by chemical vapor deposition, and some use a mixture of polymer solution and graphite powder, and then carbonize the mixture by heat treatment and graphitize at high temperature to obtain graphite film. [0003] In terms of the application of graphite film, graphite film is currently attached to the surface of the heat source, but the heat conduction efficiency is not good. [0004] In addition, the graphene blocks produced by the currently known chemical vapor deposition method are combined by van der Waals'forces between the layers. Hig...

Claims

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Application Information

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IPC IPC(8): B32B37/10C01B31/04B32B9/00C01B32/205C01B32/21
Inventor 翁明生萧龙达曾哲律李宏元
Owner HUGETEMP ENERGY
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