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Preparation method of carbon nano tube and graphene hybrid reinforced metal matrix composite

A technology of carbon nanotubes and composite materials, which is applied in the field of preparation of carbon nanotubes and graphene hybrid reinforced metal matrix composite materials, can solve the problems of poor dispersion of carbon nanotubes, achieve convenient and effective process methods, short process, The effect of increasing content

Active Publication Date: 2018-04-10
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical purpose of the present invention is mainly to solve the problem that the current traditional method of dispersing carbon nanotubes is not effective in the metal matrix, and to develop a method that does not destroy the structure of carbon nanotubes, and does not introduce a large amount of other substances, and can also be well dispersed in the metal matrix. Method for dispersing carbon nanotubes, reducing oxidation of metal matrix, and increasing content of carbon nanotubes in metal composite materials

Method used

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  • Preparation method of carbon nano tube and graphene hybrid reinforced metal matrix composite
  • Preparation method of carbon nano tube and graphene hybrid reinforced metal matrix composite
  • Preparation method of carbon nano tube and graphene hybrid reinforced metal matrix composite

Examples

Experimental program
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Effect test

Embodiment 1

[0029] (1) Weigh 100 mg of graphene oxide and 500 mg of carbon nanotubes into 60 ml of deionized water, and ultrasonicate the mixture at room temperature for 20 min, accompanied by mechanical stirring. The above mixed dispersion was placed in a drying oven at a temperature of 200° C. and a drying time of 7 hours. The dried solid was taken out and placed in a tube furnace for reduction at a temperature of 300° C. and a holding time of 8 hours. The reduced powder was added to 160ml of acetone, and ultrasonicated at room temperature for 20 minutes, accompanied by mechanical stirring.

[0030] (2) Weigh 49.4g of pure magnesium powder and add it to the dispersion liquid obtained in (1), and stir for 40min. Then it was placed in a vacuum drying oven at a drying temperature of 70° C. for 180 minutes. The dried powder was subjected to extrusion molding, the extrusion temperature was 350° C., and the extrusion ratio was 10.

Embodiment 2

[0032] (1) Weigh 700 mg of graphene oxide and 100 mg of carbon nanotubes into 80 ml of distilled water, and ultrasonicate the mixture at room temperature for 60 min, accompanied by mechanical stirring. The above mixed dispersion was placed in a drying oven at a temperature of 80° C. and a drying time of 24 hours. The dried solid was taken out and placed in a tube furnace for reduction at a temperature of 400° C. and a holding time of 6 hours. Add the reduced powder into 180ml of absolute ethanol, and ultrasonicate at room temperature for 60min, accompanied by mechanical stirring.

[0033](2) Weigh 49.2 g of aluminum alloy (1060) powder and add it to the dispersion obtained in (1), and stir for 120 min. Then it was placed in a vacuum drying oven at a drying temperature of 85° C. for 120 minutes. The dried powder was subjected to extrusion molding, the extrusion temperature was 400° C., and the extrusion ratio was 10.

Embodiment 3

[0035] (1) Weigh 100 mg of graphene oxide and 900 mg of carbon nanotubes and add them into 100 ml of distilled water, and ultrasonicate the above mixture at room temperature for 120 min, accompanied by mechanical stirring while ultrasonicating. The above mixed dispersion was placed in a drying oven at a temperature of 150° C. and a drying time of 12 hours. The dried solid was taken out and placed in a tube furnace for reduction at a temperature of 500° C. and a holding time of 5 hours. Add the reduced powder into 200ml of absolute ethanol, and ultrasonicate at room temperature for 120min, accompanied by mechanical stirring.

[0036] (2) Weigh 49.0 g of titanium alloy (TA22) powder and add it to the dispersion obtained in (1), and stir for 90 min. Then it was placed in a vacuum drying oven at a drying temperature of 100° C. for 80 minutes. The dried powder was subjected to extrusion molding, the extrusion temperature was 500° C., and the extrusion ratio was 16.

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Abstract

The invention provides a preparation method of a carbon nano tube and graphene hybrid reinforced metal matrix composite and belongs to the field of dispersion of carbon nano tubes and preparation of the composite. According to the method, through addition of oxidized graphene and a series of technological processes, the carbon nano tubes are effectively dispersed in a metal base body, the contentof the carbon nano tubes in the composite is increased, and oxidation of the metal base body is reduced. The method comprises the main implementation steps of (1) preparation of carbon nano tube and graphene dispersion liquid; (2) preparation of the carbon nano tube and graphene metal matrix composite. The method has the advantages that the dispersion effect is good; operation is easy; the technological process is short; less new impurities are introduced; and environmental pollution is small.

Description

technical field [0001] The invention belongs to the field of dispersion of carbon nanotubes and preparation of composite materials, and in particular relates to a preparation method of a carbon nanotube and graphene hybrid reinforced metal matrix composite material. Background technique [0002] Since 1991, Carbon Nanotube (CNT for short) was discovered by Dr. Iijima Haruo (S.Iijima) of Japan Electronics Corporation, because of its excellent mechanical, thermal and electrical properties, it has been widely used in materials science, etc. All walks of life. Carbon nanotubes are seamless, hollow tubes rolled from graphene sheets formed by carbon atoms. They are one-dimensional carbon materials with extremely high axial strength, axial Young's modulus close to 2Tpa, and tensile strength up to 100GPa, 100 times that of steel. In addition, its high elastic modulus, large specific surface area, good high temperature stability, good anti-friction and wear resistance, high thermal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C1/05C22C26/00C22C32/00
CPCC22C1/05C22C26/00C22C32/0084C22C2026/002
Inventor 杜文博孟繁婧王朝辉刘轲李淑波杜宪赵晨辰
Owner BEIJING UNIV OF TECH
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