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Copper-coated multilayer graphene composite material and preparation method thereof

A multi-layer graphene and composite material technology, applied in conductive materials, conductive materials, nanotechnology for materials and surface science, etc., can solve the problems of high cost and difficult dispersion of carbon nanotubes and graphene, and achieve the The effect of electrical conductivity, good dispersion and excellent electrical conductivity

Inactive Publication Date: 2020-12-11
杭州梵云新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, the cost of carbon nanotubes and graphene is also high, and under the action of van der Waals force, it is easy to re-stack and not easy to disperse.

Method used

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  • Copper-coated multilayer graphene composite material and preparation method thereof
  • Copper-coated multilayer graphene composite material and preparation method thereof
  • Copper-coated multilayer graphene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of preparation method of copper clad multilayer graphene composite material of the present embodiment, comprises the following steps:

[0038] Measure 8mL of DMF and 2mL of distilled water and mix them together to form a homogeneous mixed solvent. Weigh 20 mg of expanded graphite, add a mixed solvent, perform mechanical exfoliation on an ultrasonic machine for 5 hours, and exfoliate the expanded graphite into a multilayer graphene dispersion with a thickness of 1-10 nm. Weigh 200 mg of copper acetate and 0.4 μL of 10 wt % dilute nitric acid, and pour the two into the graphene dispersion solution successively. Dilute nitric acid is added to uniformly deposit copper oxide on the surface of multilayer graphene to form a nano-copper oxide film. Put the solution into a water bath at a temperature of 90° C., stir it with magnetic force for 2 hours, and take it out to cool at room temperature. The samples were cleaned with a centrifuge, three times each with water and...

Embodiment 2

[0041] A kind of preparation method of copper clad multilayer graphene composite material of the present embodiment, comprises the following steps:

[0042] Measure 8mL of DMF and 2mL of distilled water and mix them together to form a homogeneous mixed solvent. Weigh 20 mg of expanded graphite, add a mixed solvent, perform mechanical exfoliation on an ultrasonic machine for 9 hours, and exfoliate the expanded graphite into a multilayer graphene dispersion with a thickness of 1-10 nm. Weigh 200 mg of copper acetate and 0.4 μL of 10 wt % dilute nitric acid, and pour the two into the graphene dispersion solution successively. Dilute nitric acid is added to uniformly deposit copper oxide on the surface of multilayer graphene to form a nano-copper oxide film. Put the solution into a water bath with a temperature of 95° C., stir it with magnetic force for 2 hours, and take it out to cool at room temperature. The samples were cleaned with a centrifuge, three times each with water a...

Embodiment 3

[0044] A kind of preparation method of copper clad multilayer graphene composite material of the present embodiment, comprises the following steps:

[0045] Measure 16mL of DMF and 4mL of distilled water and mix them together to form a uniform mixed solvent. Weigh 40 mg of expanded graphite, add a mixed solvent, perform mechanical exfoliation on an ultrasonic machine for 8 hours, and exfoliate the expanded graphite into a multilayer graphene dispersion with a thickness of 1-10 nm. Weigh 400 mg of copper acetate and 0.8 μL of 10 wt % dilute nitric acid, and pour the two into the graphene dispersion solution successively. Dilute nitric acid is added to uniformly deposit copper oxide on the surface of multilayer graphene to form a nano-copper oxide film. Put the solution into a water bath with a temperature of 85° C., stir it with a magnetic force for 2 hours, and take it out to cool at room temperature. The samples were cleaned with a centrifuge, three times each with water an...

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Abstract

The invention belongs to the technical field of conductive fillers, and particularly relates to a preparation method of a copper-coated multilayer graphene composite material. The preparation method comprises the following steps: mixing DMF and distilled water to obtain a mixed solvent; adding expanded graphite into a mixed solvent, and stripping the expanded graphite into a multilayer graphene dispersion liquid through ultrasonic stirring and stripping; adding copper acetate and dilute nitric acid into the multilayer graphene dispersion liquid, putting into a water bath kettle, heating, taking out, and cooling to room temperature; cleaning with a centrifugal machine, and drying the cleaned sample in a drying box to obtain copper oxide / multilayer graphene powder; and putting the copper oxide / multi-layer graphene powder into a tubular furnace, heating in a N2 protective atmosphere, and cooling to room temperature to obtain copper-coated multilayer graphene conductive powder. The formedcomposite material is not easy to agglomerate, and can be easily combined with macromolecules and rubber as a filler to form a high-quality conductive filler, thereby further enhancing the conductivity and dispersity.

Description

technical field [0001] The invention belongs to the technical field of conductive fillers, in particular to a copper-coated multilayer graphene composite material and a preparation method thereof. Background technique [0002] The conductive paste has the same fluidity as paint, and various coating methods can be used. The conductive paste also has good conductivity, so the conductive paste can be used at the connection joints of various electronic components to increase the conductivity. Conductive silver paste consists of conductive fillers, binders, solvents and additives. Its conductivity is mainly determined by conductive fillers. [0003] At present, silver powder and copper powder are the most conductive conductive fillers. Gold powder, graphite, carbon black, carbon fiber and nickel powder are also used as conductive fillers. Although graphite, carbon black and carbon fiber are low in cost, they have poor conductivity. . After the discovery of carbon nanotubes and...

Claims

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Application Information

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IPC IPC(8): H01B13/00H01B1/02H01B1/04B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01B1/026H01B1/04H01B13/00
Inventor 李柳萌程继鹏王建明
Owner 杭州梵云新材料科技有限公司
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