Preparation method and system of high-conductivity graphite film

A technology of high thermal conductivity graphite and manufacturing method, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve problems such as not being ideal.

Active Publication Date: 2014-02-19
SHANGHAI JIEYUAN ENVIRONMENTAL SCI & TECH
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  • Abstract
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Problems solved by technology

It should be pointed out that the artificial graphite film material produced by this method is not very ideal in terms of thermal conductivity, electrical conductivity and strength.

Method used

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  • Preparation method and system of high-conductivity graphite film
  • Preparation method and system of high-conductivity graphite film
  • Preparation method and system of high-conductivity graphite film

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Embodiment Construction

[0039] ginseng figure 1 As shown in the figure, a carbonization furnace 100, a graphitization furnace 200, and a temperature oscillation unit 300 connected to the graphitization furnace are shown. In the temperature oscillation unit 300, a temperature reference point selection module 310, a threshold range setting module 320, a period setting module 330, an oscillation times setting module 340, and a temperature oscillation execution module 350 are provided respectively.

[0040] In this embodiment, the polymer film material used is polyimide (PI) film as an example and not limitation. The thickness of the film is between 5 μm and 500 μm.

[0041] The carbonization furnace 100 is a functional structure for carbonizing polymer film materials. In the present invention, taking polyimide as an example, the implementation process is as follows: the carbonization temperature is suitable to be selected between 600°C and 1800°C, and as an example, it can be selected as 1000°C. Heat...

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Abstract

The invention provides a preparation method and system of a high-conductivity graphite film and belongs to the technical field of radiation. The method comprises the following steps of: 1, collecting a polymer thin film material for carbonization and graphitization, and carbonizing; 2, carrying out hyperthermic treatment on the carbonized carbide film material so as to gradually achieve the graphitization temperature; and 3, selecting a temperature reference point within the graphitization temperature range so that the temperature reference point is taken as a reference temperature, and carrying out periodic oscillation within the change range of a threshold range, wherein three or more oscillation periods are finished within the entire graphitization temperature range. By the preparation method, the preparation technology of the graphite film material is improved in a temperature oscillation manner, and the quality of the graphite film material is also improved.

Description

technical field [0001] The invention belongs to the technical field of heat dissipation and relates to a graphite film material with high thermal conductivity. technical background [0002] At present, due to its excellent characteristics, including high thermal conductivity, heat resistance, corrosion resistance and high electrical conductivity, graphite film materials are widely used in heat dissipation of electronic products, heat-resistant sealing materials, heating elements and other technologies in current industrial applications. field. [0003] For example, among the currently widely used handheld terminals, smartphones need to use high thermal conductivity, light weight, and stable materials to realize the heat dissipation function due to their small size, high density of electronic components, and large heat generation. In practical applications, graphite film materials with high heat dissipation performance are an excellent solution. [0004] The current typical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/04C01B32/205
Inventor 徐世中其他发明人请求不公开姓名
Owner SHANGHAI JIEYUAN ENVIRONMENTAL SCI & TECH
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