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Electricity-insulation heat-conduction powder and material, and preparation methods thereof

An insulating and heat-conducting, powder technology, applied in insulators, heat-exchange materials, chemical instruments and methods, etc., can solve the problems of impractical heat conduction, expensive diamond cost, difficult processing, etc., and achieve the effect of high thermal conductivity

Active Publication Date: 2014-06-18
SHENZHEN BAROY NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because diamond is very expensive and difficult to process, it is not practical to use diamond for heat conduction between electronic components

Method used

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  • Electricity-insulation heat-conduction powder and material, and preparation methods thereof

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Embodiment 1

[0026] This embodiment provides an insulating and heat-conducting powder. The insulating and heat-conducting powder includes graphite intercalation composite particles in the micron size range of 50 μm to 100 μm. The microstructure of the graphite intercalation composite includes a plurality of graphite crystals. grains, nano-scale thermally conductive insulating metal oxides distributed between the carbon atomic layers of a single graphite grain and in the gap between two graphite grains, and the graphite grain is the matrix, such as figure 1 As shown, the gap between the carbon atom layers 111 of a single graphite grain 11 is filled with nano-scale aluminum oxide 12, the average thickness of the nano-scale aluminum oxide is 0.05nm, and it is distributed in the gap 13 between two graphite grains. The average thickness of the nanoscale alumina is 10nm (not shown in the figure), and the graphite intercalation composite is filled with In addition to nano-scale alumina, the perip...

Embodiment 2

[0030] This embodiment provides an insulating and thermally conductive powder, which includes micron-sized graphite intercalation composite particles and micron-sized alumina powder, and the average particle diameter of the graphite intercalation composite particles is 10 μm. The average particle size of the micron-sized alumina powder is 1 μm, and the microstructure of the graphite intercalation composite includes multiple graphite grains, distributed between the carbon atomic layers of a single graphite grain, and distributed between two graphite grains. Interstitial nanoscale heat-conducting insulating metal oxide, the graphite grains as the matrix, such as figure 1 As shown, the gap between the carbon atom layers 111 of a single graphite grain 11 is filled with nano-scale aluminum oxide 12, the thickness of the nano-scale aluminum oxide 12 is 0.34nm, distributed in the gap 13 between two graphite grains The average thickness of the nanoscale alumina is 100nm (not shown in ...

Embodiment 3

[0034] This embodiment provides an insulating heat-conducting powder, which includes nano-scale graphite intercalation composite particles and nano-scale titanium oxide, the average particle diameter of the graphite intercalation composite particles is 500nm, the graphite The microstructure of the intercalation composite is a nanoscale thermally conductive insulating metal oxide that includes a plurality of graphite grains, is distributed between the carbon atomic layers of a single graphite grain, and is distributed in the gap between two graphite grains, and the graphite grains are matrix, such as figure 1 As shown, the gap between the carbon atom layers 111 of a single graphite grain 11 is filled with nano-scale titanium oxide 12, the average thickness of the nano-scale titanium oxide is 0.08nm, and it is distributed in the gap 13 between two graphite grains. The average thickness of the nanoscale titanium oxide is 50nm (not shown in the figure), and the graphite intercalat...

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Abstract

The invention relates to an electricity-insulation heat-conduction powder, an electricity-insulation heat-conduction material based on the electricity-insulation heat-conduction powder, a preparation method of the powder, and a preparation method of the material. The electricity-insulation heat-conduction powder comprises graphite intercalation compound particles, the microstructure of the graphite intercalation compound particles comprises a plurality of graphite crystal grains, and a nanometer heat-conduction electricity-insulation metal oxide distributed between carbon atom layers of single graphite intercalation compound particles, and the surface of the graphite intercalation compound particles is coated with a heat-conduction electricity-insulation metal oxide. The graphite intercalation compound particles in the electricity-insulation heat-conduction powder prepared through the preparation method of the powder have the characteristics of electricity insulation and heat conduction. The electricity-insulation heat-conduction powder has a high heat conductivity and an electricity insulation characteristic, and is very suitable for preparing heat conduction plastics, heat conduction rubber, heat conduction materials and the like.

Description

【Technical field】 [0001] The invention relates to an insulating and heat-conducting powder, an insulating and heat-conducting material based on the insulating and heat-conducting powder, and a preparation method thereof. 【Background technique】 [0002] More than 55% of the clapping of electronic components is caused by the temperature rise during operation, so the heat dissipation of electronic components is very important, and if the heat dissipation effect of electronic components is to be good, it is necessary to use very good thermal conductivity materials to conduct heat on the electronic components to other cooling devices. Among the many heat-conducting materials, the thermal conductivity of diamond is 5 times that of copper at room temperature. At the same time, diamond also has excellent properties such as non-magnetic and poor electrical conductivity. Therefore, theoretically, diamond is very good for electronic components. of thermally conductive materials. Howe...

Claims

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Application Information

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IPC IPC(8): C09K5/14H01B17/60H01B17/64C08L101/00C08L21/00C08K9/10C08K3/04C08K3/22C09D7/12C09D5/25
Inventor 胡军辉刘建州
Owner SHENZHEN BAROY NEW MATERIAL TECH CO LTD
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