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A kind of 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 achieve improved ball milling. Efficiency, improve uniformity, ensure the effect of uniform dispersion

Active Publication Date: 2022-03-29
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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  • A kind of preparation method of graphene copper composite ultrahigh conductivity material
  • A kind of preparation method of graphene copper composite ultrahigh conductivity material
  • A kind of 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, rinse twice with 50% (v / v) ethanol aqueous solution, then rinse twice with deionized water, and dry in a vacuum oven at 50°C for 12h. Tube furnace at 600°C for 3h.

[0038] (2) Add 20g 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) Under a hydrogen atmosphere, treat at 200°C for 3 hours to obtain a graphene-...

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, rinse twice with 50% (v / v) ethanol aqueous solution, then rinse twice with deionized water, and dry in a vacuum oven at 50°C for 12h. Tube furnace at 600°C for 3h.

[0045] (2) Add 20g 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) Under a hydrogen atmosphere, treat at 200°C for 3 hours to obtain a graphene-...

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, rinse twice with 50% (v / v) ethanol aqueous solution, then rinse twice with deionized water, and dry in a vacuum oven at 60°C for 10h. Tube furnace at 650°C for 3h.

[0052] (2) Add 20g 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 graphene-...

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Abstract

The invention discloses a method for preparing a graphene-copper composite ultrahigh-conductivity material, which belongs to the technical field of new materials. The method includes the following steps: S11, mixing ionized water with copper salt, reducing agent, and surfactant, then mixing with extractant, then mixing with graphene, reacting at high temperature, centrifuging to obtain solid matter, cleaning, and vacuum drying; S12, oxidation treatment ; S13, mixing with copper powder, ball milling; S14, vacuum drying; S15, roasting to obtain graphene-copper composite powder, that is, graphene-copper composite ultrahigh conductivity material. The preparation method of the graphene-copper composite ultra-high conductivity material of the present invention, through the preliminary dispersion of copper powder and graphene obtained by copper salt reduction, improves the uniformity of graphene and copper powder ball milling, and can reduce the agglomeration phenomenon under high graphene content , the obtained ultrahigh conductive material has good strength and electrical 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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Patent Type & Authority Patents(China)
IPC IPC(8): H01B12/00B22F9/24B22F9/04B22F1/142B22F1/145B22F1/12
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