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Preparation method of multi-dimensional carbon material composite reinforced copper-based material

A composite reinforcement, carbon material technology, applied in the fields of nanotechnology, carbon compounds, chemical instruments and methods for materials and surface science, can solve the problems of strength enhancement elongation and electrical conductivity of copper matrix composites, which are difficult to achieve, Achieve the effect of good bonding strength, increased strength and elongation, and increased electrical conductivity

Active Publication Date: 2021-08-20
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] After copper is combined with various reinforcements, due to the interface bonding problem, it is difficult to realize the problem that the copper-based composite material does not lose elongation and conductivity while increasing the strength. The present invention rapidly prepares carbon nanotube-graphite through a one-pot method. Graphene-graphene quantum dot multi-dimensional composite reinforced powder is used for multifunctional reinforcement of copper-based materials, while increasing the strength, elongation and conductivity of copper, aiming to improve the comprehensive performance of composite materials

Method used

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  • Preparation method of multi-dimensional carbon material composite reinforced copper-based material
  • Preparation method of multi-dimensional carbon material composite reinforced copper-based material
  • Preparation method of multi-dimensional carbon material composite reinforced copper-based material

Examples

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Effect test

Embodiment 1

[0032] A method for preparing a multi-dimensional carbon material composite reinforced copper-based material, the specific steps are:

[0033] (1) Acid cracking: 500mg of nitrogen-doped carbon nanotubes and 250mL of concentrated nitric acid with a mass fraction of 68% were evenly mixed in a 1L three-necked round-bottomed flask, heated to 140°C and stirred for reflux for 48h;

[0034] (2) Alkali neutralization: the reflux liquid of step (1) is neutralized to neutrality in an ice bath with sodium hydroxide;

[0035] (3) Dialysis: Dialyze the neutralized dispersion in step (2) with a 500 Da dialysis bag in ultrapure water for 5 days;

[0036] (4) Drying: The dispersion in the dialysis bag in step (3) was rotary evaporated at 60°C to a volume of about 50mL, and then freeze-dried to obtain nitrogen-doped carbon nanotube-graphene-graphene quantum dot powder. The rotary evaporation process continued Vacuumize to improve the efficiency of rotary evaporation;

[0037] (5) Composite p...

Embodiment 2

[0043] A method for preparing a multi-dimensional carbon material composite reinforced copper-based material, the specific steps are:

[0044] (1) Acid cracking: 250mg of graphitized carbon nanotubes and 250mL of concentrated nitric acid with a mass fraction of 68% were uniformly mixed in a 1L three-necked round-bottomed flask, heated to 140°C and stirred for reflux for 48h;

[0045] (2) Alkali neutralization: the reflux liquid of step (1) is neutralized to neutrality in a water bath with potassium hydroxide;

[0046] (3) Dialysis: Dialyze the neutralized dispersion in step (2) in ultrapure water for 4 days with a 1000 Da dialysis bag;

[0047] (4) Drying: Rotate the dispersion in the dialysis bag in step (3) at 70°C to a volume of about 50mL, freeze-dry to obtain graphitized carbon nanotube-graphene-graphene quantum dot powder, and continue vacuuming during the rotary evaporation process , improve the efficiency of rotary evaporation;

[0048] (5) Preparation of composite p...

Embodiment 3

[0052] A method for preparing a multi-dimensional carbon material composite reinforced copper-based material, the specific steps are:

[0053] (1) Acid cracking: 1000mg of industrialized carbon nanotubes and 250mL of concentrated nitric acid with a mass fraction of 68% were evenly mixed in a 1L three-neck round bottom flask, heated to 100°C and stirred for reflux for 96h;

[0054] (2) Alkali neutralization: the reflux solution of step (1) is neutralized to neutrality in an ice bath with a potassium hydroxide solution of concentration 5mol / L;

[0055] (3) Dialysis: Dialyze the neutralized dispersion in step (2) in ultrapure water for 6 days with a 3500 Da dialysis bag;

[0056] (4) Drying: Rotate the dispersion in the dialysis bag in step (3) at 80°C to about 50mL, freeze-dry to obtain industrialized carbon nanotube-graphene-graphene quantum dot powder, and continue vacuuming during the rotary evaporation process to improve Evaporation efficiency;

[0057] (5) Composite powde...

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Abstract

The invention discloses a preparation method of a multi-dimensional carbon material composite reinforced copper-based material, which comprises the following steps: uniformly mixing a carbon precursor with concentrated acid, heating, stirring and refluxing, neutralizing a product with an alkaline substance, dialyzing in ultrapure water, carrying out rotary evaporation, and freeze-drying to obtain mixed powder of carbon nanotube-graphene-graphene quantum dots; performing ball milling and reduction on copper powder and the mixed powder to obtain copper and carbon nano tube-graphene-graphene quantum dot composite powder, and sintering to obtain a composite material. The method disclosed by the invention is simple to operate and easy for industrial preparation, the obtained composite reinforcements are uniformly distributed, the relative proportion of the three-dimensional reinforcements is controllable, and a remarkable effect of multi-dimensional reinforcement on a matrix material can be achieved.

Description

technical field [0001] The invention relates to a method for preparing a multidimensional carbon material composite reinforced copper-based material, belonging to the fields of composite material preparation and powder metallurgy. Background technique [0002] Graphene quantum dots are a carbon-based zero-dimensional material. Graphene quantum dots have many advantages such as excellent optical properties, good water solubility, low toxicity, environmental friendliness, wide source of raw materials, low cost, and good biocompatibility. Carbon nanotubes, also known as bucky tubes, are one-dimensional nanomaterials with a special structure (the radial dimension is on the order of nanometers, the axial dimension is on the order of microns, and both ends of the tube are basically sealed). Carbon nanotubes are mainly coaxial tubes with several to tens of layers of carbon atoms arranged in a hexagonal shape. The distance between the layers is kept fixed, about 0.34nm, and the di...

Claims

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Application Information

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IPC IPC(8): C22C1/05B22F9/04C22C9/00C01B32/184C01B32/168C01B32/176B82Y30/00B82Y40/00
CPCC22C1/05C22C1/0425B22F9/04C22C9/00C22C26/00C01B32/184C01B32/168C01B32/176B82Y30/00B82Y40/00B22F2009/043C22C2026/002Y02P10/25
Inventor 鲍瑞聂有良易健宏
Owner KUNMING UNIV OF SCI & TECH
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