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Preparation method of graphene copper composite ultrahigh-conductivity material

A graphene and conductive material technology, used in superconducting/high-conducting conductors, superconducting devices, metal processing equipment, etc., can solve the problems of reducing the strength and conductivity of composite materials, poor dispersion, etc., and improve the performance of ball milling. Efficiency, improved uniformity, reduced agglomeration effect

Active Publication Date: 2021-08-17
深圳市黑金工业制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the higher the graphene content, the poorer the dispersion of graphene and copper powder will be, which will significantly reduce the strength properties and electrical conductivity of the resulting composite.

Method used

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  • Preparation method of graphene copper composite ultrahigh-conductivity material
  • Preparation method of graphene copper composite ultrahigh-conductivity material
  • Preparation method of graphene copper composite ultrahigh-conductivity material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A preparation method of graphene-copper composite ultrahigh-conductivity material:

[0037] (1) Take 25ml of deionized water, add 0.1g of copper chloride dihydrate, add 0.5g of vitamin C, add 0.01g of polyethylene glycol 4000, and stir well. Add 0.4 g of trioctylamine, sonicate for 15 minutes to obtain a milky white liquid, add 0.2 g of graphene, sonicate for 15 minutes, and keep it in an anti-corrosion pressure vessel at 125°C for 16 hours. Centrifuge, wash twice with 50% (v / v) ethanol aqueous solution, then wash twice with deionized water, and dry in a vacuum oven at 50° C. for 12 hours. Tube furnace at 600°C for 3h.

[0038] (2) Add 20 g of copper powder, and perform ball milling under liquid nitrogen immersion. The weight ratio of the ball to the material is 15:1, the speed of the ball mill is 20rpm, and the ball mill is 15h.

[0039] (3) Dry in a vacuum oven at 50° C. for 3 hours.

[0040] (4) Treat at 200° C. for 3 hours under a hydrogen atmosphere to obtain a...

Embodiment 2

[0043] A preparation method of graphene-copper composite ultrahigh-conductivity material:

[0044] (1) Take 25ml of deionized water, add 0.1g of copper chloride dihydrate, add 0.5g of vitamin C, add 0.01g of polyethylene glycol 4000, and stir well. Add 0.3 g of trioctylamine, sonicate for 20 minutes to obtain a milky white liquid, add 0.2 g of graphene, sonicate for 15 minutes, and keep it in an anti-corrosion pressure vessel at 110°C for 20 hours. Centrifuge, wash twice with 50% (v / v) ethanol aqueous solution, then wash twice with deionized water, and dry in a vacuum oven at 50° C. for 12 hours. Tube furnace at 600°C for 3h.

[0045] (2) Add 20 g of copper powder, and perform ball milling under liquid nitrogen immersion. The weight ratio of the ball to the material is 20:1, the speed of the ball mill is 20rpm, and the ball mill is 10h.

[0046] (3) Dry in a vacuum oven at 50° C. for 3 hours.

[0047] (4) Treat at 200° C. for 3 hours under a hydrogen atmosphere to obtain a...

Embodiment 3

[0050] A preparation method of graphene-copper composite ultrahigh-conductivity material:

[0051] (1) Take 25ml of deionized water, add 0.1g of copper chloride dihydrate, add 0.5g of vitamin C, add 0.01g of polyethylene glycol 4000, and stir well. Add 0.4 g of trioctylamine, sonicate for 15 minutes to obtain a milky white liquid, add 0.2 g of graphene, sonicate for 15 minutes, and keep it in an anti-corrosion pressure vessel at 125°C for 16 hours. Centrifuge, wash twice with 50% (v / v) ethanol aqueous solution, then wash twice with deionized water, and dry in a vacuum oven at 60° C. for 10 h. Tube furnace at 650°C for 3h.

[0052] (2) Add 20 g of copper powder, and perform ball milling under liquid nitrogen immersion. The weight ratio of the ball to the material is 15:1, the speed of the ball mill is 20rpm, and the ball mill is 15h.

[0053] (3) Dry in a vacuum oven at 60° C. for 3 hours.

[0054] (4) Under a hydrogen atmosphere, treat at 220°C for 3 hours to obtain a grap...

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Abstract

The invention discloses a preparation method of a graphene copper composite ultrahigh-conductivity material, and belongs to the technical field of new materials. The method comprises the following steps: S11, mixing ionized water with a copper salt, a reducing agent and a surfactant, then mixing with an extracting agent, then mixing with graphene, carrying out high-temperature reaction and centrifugation to obtain a solid substance, and cleaning and carrying out vacuum drying; s12, carrying out oxidation treatment; s13, mixing with copper powder, and carrying out ball milling; s14, performing vacuum drying; and S15, roasting to obtain graphene copper composite powder, namely the graphene copper composite ultrahigh-conductivity material. According to the preparation method of the graphene and copper composite ultrahigh-conductivity material, through preliminary dispersion of the copper powder obtained through reduction of the copper salt and the graphene, the ball-milling uniformity of the graphene and the copper powder is improved, the agglomeration phenomenon under the high graphene content can be reduced, and the obtained ultrahigh-conductivity material has good strength and conductivity.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a method for preparing a graphene-copper composite ultrahigh-conductivity material. Background technique [0002] Copper wire has good electrical and thermal conductivity, corrosion resistance and processing performance. Graphene is widely cited in the preparation of metal composites due to its mechanical properties, thermal conductivity, and thermal expansion properties. [0003] In the preparation of graphite-copper composite materials, the higher the graphene content, the better the electrical conductivity. However, the higher the graphene content, the worse the dispersion of graphene and copper powder will be, which will significantly reduce the strength properties and electrical conductivity of the resulting composite. The chemical reduction method has been applied in the preparation of copper powder because of its uniform powder, controllable particle si...

Claims

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Application Information

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IPC IPC(8): H01B12/00B22F1/00B22F1/02B22F9/04B22F9/24
CPCB22F1/0003H01B12/00B22F9/24B22F9/04B22F2009/043B22F1/142B22F1/145B22F1/16
Inventor 贾涛洪旺周若楠习向智杨粉丽李蔓
Owner 深圳市黑金工业制造有限公司
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