Preparation method of graphene oxide/carbon nanotube multi-arm heat conducting filler

A technology of carbon nanotubes and thermally conductive fillers is applied in the preparation of graphene/carbon nanotube multi-arm thermally conductive fillers, and the preparation of graphene oxide and carbon nanotube multi-armed thermally conductive fillers, which can solve the problem of hybridization efficiency. Low, unstable processing and other problems, to achieve the effect of improving dispersion performance, improving thermal conductivity, and expanding applications

Inactive Publication Date: 2016-02-03
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method of graphene oxide and carbon nanotube multi-arm fixed configuration thermally conductive filler, and to study a method of manufacturing graphene oxide / carbon nanotube fixed configuration combined with mechanical force activation and chemical reaction. Multi-arm thermally conductive filler to overcome the problem of low hybridization efficiency caused by unstable processing

Method used

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  • Preparation method of graphene oxide/carbon nanotube multi-arm heat conducting filler
  • Preparation method of graphene oxide/carbon nanotube multi-arm heat conducting filler
  • Preparation method of graphene oxide/carbon nanotube multi-arm heat conducting filler

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Graphene microchips are placed in a polytetrafluoroethylene ball milling jar, and silicon carbide ball milling balls with a particle size of 0.5, 1 and 2 mm are selected. The ratio is 1:0.6:0.2, and the ball milling ball accounts for 40% of the ball milling jar volume. Add A certain volume of concentrated sulfuric acid was ball milled at a speed of 400 rpm for 12 hours. During ball milling, ice water was introduced into the outer wall of the ball mill tank, and the cooling water was changed every 3 hours to obtain mechanically exfoliated graphene oxide.

[0031]Put carbon nanotubes with an aspect ratio of 80:1 and a tube diameter of 20nm into a polytetrafluoroethylene ball mill jar, and select silicon carbide balls with a particle size of 0.5, 1 and 2 mm, and the ratio is 1:0.8:0.05 , the balls account for 20% of the volume of the ball milling tank, add a certain volume of isopropyl tris (dioctyl pyrophosphate acyloxy) titanate in isopropanol solution, wherein isopropyl ...

Embodiment 2

[0034] Graphene microchips are placed in a polytetrafluoroethylene ball mill jar, select boron nitride ball mill balls with a particle size of 0.5, 1 and 2 mm, and the ratio is 1:0.8:0.05, and the ball mill ball accounts for 60% of the ball mill jar volume, Add a certain volume of nitric acid, and ball mill at a speed of 2000 rpm for 24 hours. During ball milling, ice water is introduced into the outer wall of the ball mill tank, and the cooling water is changed every 3 hours to obtain mechanically exfoliated graphene oxide.

[0035] Put carbon nanotubes with an aspect ratio of 200:1 and a tube diameter of 10nm into a polytetrafluoroethylene ball mill jar, and select silicon carbide balls with a particle size of 0.5, 1 and 2 mm, and the ratio is 1:0.6:0.2 , the milling ball accounts for 40% of the volume of the ball milling tank, and a certain volume of isopropyl tris (dioctyl phosphate acyloxy) titanate isopropanol solution is added, wherein isopropyl tris (dioctyl phosphate a...

Embodiment 3

[0038] Graphene microchips are placed in a polytetrafluoroethylene ball milling jar, and silicon carbide ball milling balls with a particle size of 0.5, 1 and 2 mm are selected. The ratio is 1:0.7:0.1, and the ball milling ball accounts for 50% of the ball milling jar volume. Add A certain volume of perchloric acid was ball milled at a speed of 600 rpm for 16 hours. During ball milling, ice water was introduced into the outer wall of the ball mill tank, and the cooling water was changed every 3 hours to obtain mechanically exfoliated graphene oxide.

[0039] Put the carbon nanotubes with an aspect ratio of 100:1 and a tube diameter of 40nm into a polytetrafluoroethylene ball mill jar, and select silicon carbide balls with a particle size of 0.5, 1 and 2 mm, and the ratio is 1:0.6:0.15 , the ball milling ball accounts for 30% of the volume of the ball milling tank, add a certain volume of isopropyl dioleate (dioctyl phosphate acyloxy) titanate in isopropanol solution, wherein is...

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Abstract

The invention relates to a mechanical and chemical preparation method of graphene / carbon nanotube multi-arm heat conducting filler, belonging to the technical field of high-performance powdery material preparation. The preparation method comprises the steps of fixedly linking the end of a carbon nanotube to the surface of graphene oxide serving as an inner core by using a simple mechanicl and chemical method, and forming multi-arm filler with high heat conductivity by virtue of the high heat conductivity of graphene and the carbon nanotube. Based on the high heat conductivity of a nanocarbon material the increment of specific surface area, the novel heat conducting filler prepared by using the preparation method can be used for improving the dispersing performance and heat conducting effect of the carbon nanotube to the great extent and is stable in structure.

Description

technical field [0001] The present invention relates to a preparation method of graphene oxide and carbon nanotube multi-arm fixed configuration thermally conductive filler, in particular to a preparation method of graphene / carbon nanotube multi-arm thermally conductive filler prepared by mechanical force-chemical method, The invention belongs to the technical field of high-performance powder material preparation. Background technique [0002] Metal materials are good conductors of heat in the traditional sense. In common industrial products, a large number of metal materials are used to make heat conduction and heat dissipation devices. While meeting the heat conduction requirements, it also brings products with simple appearance, heavy weight, and Resistance to chemical corrosion defects. With the advancement of science and technology, people's requirements for thermally conductive materials have been further improved. Light weight, easy processing and molding, impact res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K7/24C08K3/04C08K9/02C08K9/04
Inventor 陈敏仪徐睿杰谢嘉宜林晓桂雷彩红张笑晴
Owner GUANGDONG UNIV OF TECH
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