Preparation method of high-thermal-conductivity aluminum base graphene composite material

A composite material and graphene technology, applied in the field of material surface treatment, can solve the problem of insufficient thermal conductivity of metals, achieve the effect of easy operation of instruments and equipment, simple process, and improved thermal conductivity

Active Publication Date: 2016-06-22
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a method for preparing a high thermal conductivity aluminum-based graphene composite material, the method is simple in process, and the equipment is easy to operate; the prepared high thermal conductivity aluminum-based graphene composite The material solves the problem that the thermal conductivity of the metal itself is not high enough

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  • Preparation method of high-thermal-conductivity aluminum base graphene composite material
  • Preparation method of high-thermal-conductivity aluminum base graphene composite material
  • Preparation method of high-thermal-conductivity aluminum base graphene composite material

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Embodiment 1

[0025] (1) Prepare dopamine into a 20 mg / mL aqueous solution with distilled water, and adjust its pH to 8.5 with NaOH solution to obtain a dopamine aqueous solution; place graphene oxide in distilled water, and then ultrasonicate for 4 hours to form a 0.5 mg / mL oxidation solution. Graphene aqueous solution;

[0026] (2) The aluminum sheet is ultrasonically cleaned in ethanol, acetone, and ethanol for 5 minutes respectively to remove the oil stain on the surface of the aluminum sheet;

[0027] (3) Immerse the cleaned aluminum sheet vertically in the dopamine aqueous solution, and let it stand for 60 minutes; after the aluminum sheet is taken out from the dopamine aqueous solution, wash it with distilled water, then vertically immerse the aluminum sheet in the graphene oxide aqueous solution, and let it stand React for 3 hours; take the aluminum sheet out of the graphene oxide aqueous solution, wash it with distilled water, put the aluminum sheet flat on a petri dish, and put it...

Embodiment 2

[0035] (1) Prepare dopamine into a 20 mg / mL aqueous solution with distilled water, and adjust its pH to 8.5 with NaOH solution to obtain a dopamine aqueous solution; place graphene oxide in distilled water, and then ultrasonicate for 4 hours to form a 0.5 mg / mL oxidation solution. Graphene aqueous solution;

[0036] (2) The aluminum sheet is ultrasonically cleaned in ethanol, acetone, and ethanol for 5 minutes respectively to remove the oil stain on the surface of the aluminum sheet;

[0037] (3) Immerse the cleaned aluminum sheet vertically in the dopamine aqueous solution and let it stand for reaction for 40 minutes; after the aluminum sheet is taken out from the dopamine aqueous solution, wash it with distilled water, then vertically immerse the cleaned aluminum sheet in the graphene oxide aqueous solution , standing for reaction for 4 hours; take out the aluminum flake from the graphene oxide aqueous solution, wash it with distilled water to obtain the aluminum flake I, pu...

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Abstract

The invention relates to a preparation method of a high-thermal-conductivity aluminum base graphene composite material, and belongs to the field of material surface treatment. The method comprises the following steps that an aluminum piece is vertically dipped in dopamine water solution with pH of 8-8.5 for standing by 20-80 min; after the aluminum piece is taken out from the dopamine water solution, water with purity not lower than purity of distilled water is used for cleaning, and the cleaned aluminum piece is vertically dipped in graphene oxide water solution for standing by 2-6 h; and after the aluminum piece is taken out from the graphene oxide water solution, the water with the purity not lower than the purity of the distilled water is used for cleaning, and the cleaned aluminum piece is annealed at 100-300 DEG C by 0.5-3 h to obtain the high-thermal-conductivity aluminum base graphene composite material. The method is simple in process and convenient for instrument equipment operation; and the prepared aluminum base graphene composite material is excellent in thermal conductivity.

Description

Technical field: [0001] The invention relates to a preparation method of a high thermal conductivity aluminum-based graphene composite material, which belongs to the field of material surface treatment. Background technique: [0002] Metal matrix composites are one of the hotspots of current research. At present, the methods of preparing high thermal conductivity metal composite materials are mainly concentrated in the following two aspects: one is to use nanotechnology to study metal matrix composite materials with metal as the basic phase; the other is to use the prepared high thermal conductivity materials through physical means such as bonding Realize the combination of high thermal conductivity material and metal. With the rapid development of nanotechnology, especially nanocarbon-reinforced metal matrix composites, people are trying to obtain metal matrix composites with high thermal conductivity. The thermal conductivity of metal materials is good, but the thermal e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/10
CPCC22C1/10C22C21/00
Inventor 卢士香侯晓敏徐文国
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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