Nanocarbon reinforced copper-based composite material for maglev trains, and preparation method thereof

A technology of copper-based composite material and nano-carbon, applied in the field of nano-carbon reinforced copper-based composite material and its preparation, and copper-based composite material, achieving good comprehensive performance, simple and easy preparation method, and good reinforcement effect

Active Publication Date: 2018-09-11
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the problem that carbon nanotubes and graphene are applied in composite materials in the prior art, and it...

Method used

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  • Nanocarbon reinforced copper-based composite material for maglev trains, and preparation method thereof
  • Nanocarbon reinforced copper-based composite material for maglev trains, and preparation method thereof
  • Nanocarbon reinforced copper-based composite material for maglev trains, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] modified carbon nanotubes

[0069] Add carbon nanotubes to 10 μg / mL gallic acid aqueous solution, and ultrasonically disperse for 30 minutes, wherein the ratio of the weight of carbon nanotubes to the volume of gallic acid aqueous solution is 0.1g:40mL; filter after standing for 24 hours, remove the filter residue at 60 ℃ and vacuum-dried for 2 h to obtain surface-modified carbon nanotubes.

[0070] By comparing the morphology characteristics of surface-modified carbon nanotubes and non-surface-modified carbon nanotubes, it was found that the non-surface-modified carbon nanotubes were in the form of clusters or bundles, and the dispersion was poor; The surface of the carbon nanotubes is smooth, and many individual carbon nanotubes can be observed, and the aspect ratio does not change much.

[0071] Evenly disperse 0.1 g of the surface-treated carbon nanotubes prepared in this Example 1 in 100 mL of deionized water, and after standing for 5 days, the precipitation gra...

Embodiment 2

[0073] modified carbon nanotubes

[0074] According to the method of Example 1, the concentration of the gallic acid aqueous solution was changed to 5 μg / mL and 15 μg / mL, and the rest were the same as in Example 1 to obtain surface-modified carbon nanotubes respectively.

[0075] Evenly disperse 0.1 g of the carbon nanotubes prepared in Example 2 that have been surface-treated with gallic acid aqueous solutions with a concentration of 5 μg / mL and 15 μg / mL in 100 mL of deionized water, and after standing for 2 to 3 days, under the action of gravity Precipitation gradually increased, but the carbon nanotubes remained dispersed.

[0076] Combining the results of Example 1 and Example 2, the carbon nanotubes after the surface modification of the gallic acid aqueous solution have good dispersibility, and the impurity content is reduced; and when the concentration of the gallic acid aqueous solution is 10 μg / mL, the surface modification effect is the best .

Embodiment 3

[0078] modified graphene

[0079] Add graphene into 0.02μg / mL rutin aqueous solution, ultrasonically disperse for 30min, wherein the ratio of the weight of graphene to the volume of rutin aqueous solution is 0.1g:40mL; after standing for 24h, filter, remove the filter residue at 60℃ Dry under vacuum for 2 h to obtain surface-modified graphene.

[0080] By comparing the SEM images of surface-modified graphene and graphene without surface modification, it was found that the graphene without surface modification was in the form of clusters or bundles, and the dispersion was poor; the surface of graphene with surface modification Bright and clean, many individual graphenes can be observed with little change in size.

[0081] The surface-treated graphene 0.1g prepared in the present embodiment 3 is evenly dispersed in 100mL deionized water, and after standing for 5 days, the precipitation gradually increases under the action of gravity, but the graphene still maintains a dispersed...

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Abstract

The invention discloses a nanocarbon reinforced copper-based composite material for maglev trains. The nanocarbon reinforced copper-based composite material is characterized in that the nanocarbon reinforced copper-based composite material comprises 0.1-5% of surface-modified carbon nanotubes, 0.1-5% of surface modified graphene, 2-10% of graphite powder, 1-4% of chromium powder, 1-8% of lead powder, 2-10% of tin powder, 0.1-1% of zirconium powder, 0.01-0.5% of lanthanum powder, and the balance of copper powder, wherein the surface-modified carbon nanotubes are carbon nanotubes obtained by modifying carbon nanotubes with an aqueous solution of gallic acid, and the surface-modified graphene is graphene modified with an aqueous solution of rutin. A copper-based composite material has low impurity content, and maintains the structure of an added reinforcing phase component complete, and various added components have a co-reinforcing effect, and significantly improve the strength, the hardness and the current-carrying friction and wear properties of the copper-based composite material. The invention also discloses a preparation method of the copper-based composite material. The methodhas the advantages of simple process, easiness in production, and broad application prospect.

Description

technical field [0001] The invention relates to a copper-based composite material, in particular to a nano-carbon reinforced copper-based composite material and a preparation method thereof, belonging to the technical field of composite material preparation. Background technique [0002] Since the discovery of carbon nanotubes and graphene, they have been studied by many scholars. Due to their unique structure, carbon nanotubes have excellent optical, thermal, electrical and mechanical properties, and have extremely high mechanical strength and ideal properties. Excellent characteristics such as elasticity, low thermal expansion coefficient, and small size; graphene has high strength, large specific surface area, and good elongation. Both carbon nanotubes and graphene are ideal materials as reinforcement phases for composites. [0003] Carbon nanotubes and graphene are widely used as reinforcing phases of composite materials, and rapid development has been achieved in polym...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C9/02C22C32/00C22C1/05C22C1/10C22C26/00
CPCC22C1/0425C22C1/05C22C9/00C22C9/02C22C26/00C22C32/0084C22C2026/002
Inventor 蒋小松舒锐蒋佳芯孙大明邵甄胰朱德贵朱旻昊
Owner SOUTHWEST JIAOTONG UNIV
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