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Heat-emitting graphite material comprising amorphous carbon particles and a production method therefor

A technology of amorphous carbon and heat dissipation materials, applied in heat exchange materials, chemical instruments and methods, thin material processing, etc., can solve the problems of reducing economy, high production costs, and generating toxic gases, etc., to improve thermal diffusion and thermal conductivity, improve the effect of vertical heat conduction, and improve performance

Inactive Publication Date: 2012-07-11
崔锡洪 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method not only complicates the process and produces toxic gas, but also reduces the economy because the production cost is too high

Method used

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  • Heat-emitting graphite material comprising amorphous carbon particles and a production method therefor
  • Heat-emitting graphite material comprising amorphous carbon particles and a production method therefor
  • Heat-emitting graphite material comprising amorphous carbon particles and a production method therefor

Examples

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Embodiment 1

[0050] The graphite used in the present invention is expanded graphite with a high expansion volume of 380ml / g, which can prevent the decline in thermal properties caused by unexpanded graphite, mix a certain amount of 60nm amorphous carbon particles, and utilize roller (roller) compression molding The process carries out compression molding with a compression rate of more than 30% to make a tablet with a density of 1-2g / cm 3 slices.

[0051] As shown in Table 1 below, amorphous carbon fine particles were mixed with expanded graphite. Then respectively with a thickness of 1mm, a compression rate of more than 30%, and a pressure of 500-700kg / cm 2 Make into flakes.

[0052] Table 1

[0053] sample number

Graphite (wt%)

Amorphous carbon particles (wt%)

1

100

0

2

95

5

3

90

10

4

85

15

5

80

20

6

70

30

[0054] The thermal conductiv...

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Abstract

The present invention relates to a heat management system in the context of the emission of heat generated in electronic equipment. More specifically, the present invention relates to: an effective heat-emitting material which can dramatically improve not only heat diffusion in the horizontal direction but also heat conductivity in the vertical direction by using amorphous carbon particles to fill the voids which exist in peeled graphite sheets; and a production method therefor. Amorphous carbon particles are thermally isotropic and structurally constitute microcrystals of graphite and diamond, and their size is prererably from 10 to 110 nm.

Description

technical field [0001] The invention relates to a graphite-based heat-dissipating material that can be used to make heat-dissipating fins, heat-dissipating rolls, heat-dissipating pads, heat-dissipating plates and the like. The present invention further relates to a heat dissipation material capable of removing heat generated by collective circuits of various electronic products and light sources such as LEDs. Specifically, the thermal heat dissipation material of the present invention can prevent the reliability and durability of electronic devices such as notebook computers, portable PCs, general PCs, portable terminals, and display panel LCD related products due to excessive temperature rises. Background technique [0002] Recently, LCD TVs, PDP TVs, LED TVs, all electronic devices, LED electronic lighting devices and other items have high efficiency and high functionality as their main goals, but this goal will result in a large amount of heat generated in a small area. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/00
CPCH01L23/373C09K5/14H01L2924/0002Y10T428/25Y10T428/30H01L2924/00C09K5/00
Inventor 崔锡洪朴尚羲
Owner 崔锡洪
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