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Preparation method of laminar carbon nano tube enhanced copper-based composite material

A copper-based composite material, carbon nanotube technology, applied in coatings, electrolytic coatings, etc., can solve problems such as strength sacrifice, achieve the effects of delayed initiation, simple equipment, and reduced crack growth rate

Active Publication Date: 2019-04-12
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still many problems in the research of carbon nanotube-reinforced metal matrix composites, such as the improvement of strength is often at the expense of plasticity

Method used

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  • Preparation method of laminar carbon nano tube enhanced copper-based composite material
  • Preparation method of laminar carbon nano tube enhanced copper-based composite material
  • Preparation method of laminar carbon nano tube enhanced copper-based composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Preparation of electroplating solution: take 160 g of CuSO 4 ·5H 2 O, 10 g of carbon nanotube dispersion, 25 ml of H 2 SO 4 (commercially available concentrated sulfuric acid) was added to ultrapure water to make up to 1000 ml, and the prepared solution was stirred on a magnetic stirrer for 15 minutes.

[0021] (2) Preparation of composite film: Pour the prepared solution into the electroplating tank, use two copper plates as anodes, and place a titanium plate as a cathode in the electroplating tank, and connect it to a DC power supply; first use 1 A · dm -2 Electroplating at the current density, after 30 minutes of electroplating, change the current density to 1.5 A dm -2 Continue electroplating, and then change the current density to 1A dm after electroplating for half an hour -2 , repeated 8 times; the titanium plate after electroplating was taken out and placed in a vacuum drying oven for drying at a drying temperature of 65°C. After drying for 5 hours, the...

Embodiment 2

[0026] (1) Preparation of electroplating solution: take 160 g of CuSO 4 ·5H 2 O, 10 g of carbon nanotube dispersion, 25 ml of H 2 SO 4 (commercially available concentrated sulfuric acid) was added to the volume of ultrapure water to 1000 ml, and the prepared solution was stirred on a magnetic stirrer for 15 minutes.

[0027] (2) Preparation of composite film: Pour the prepared solution into the electroplating tank, use two copper plates as anodes, and one titanium plate as a cathode, place them in the electroplating tank, and connect to a DC power supply. First use 0.5 A·dm -2 Electroplating at current density, after electroplating for 60 minutes, change the current density to 1A dm -2 Continue electroplating, and then change the current density to 0.5A·dm after electroplating for 60 minutes -2 , repeated 9 times; the titanium plate after electroplating was taken out and placed in a vacuum drying oven for drying at a drying temperature of 65°C. After drying for 5 hours, t...

Embodiment 3

[0032] (1) Preparation of electroplating solution: take 160 g of CuSO 4 ·5H 2 O, 10 g of carbon nanotube dispersion, 25 ml H 2 SO 4 (commercially available concentrated sulfuric acid) was added to the volume of ultrapure water to 1000 ml, and the prepared solution was stirred on a magnetic stirrer for 15 minutes.

[0033] (2) Preparation of composite film: Pour the prepared solution into the electroplating tank, use two copper plates as anodes, and one titanium plate as a cathode, place them in the electroplating tank, and connect to a DC power supply. First use 0.8A·dm -2 Electroplating at the current density, after 10 minutes of electroplating, change the current density to 2 A dm -2 Continue electroplating, and then change the current density to 1.5A dm after electroplating for 10 minutes -2 , repeated 10 times. The titanium plate after electroplating is taken out and placed in a vacuum drying oven for drying at a drying temperature of 65°C. After drying for 5 hours, ...

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Abstract

The invention discloses a preparation method of a laminar carbon nano tube enhanced copper-based composite material and belongs to the field of preparation of composite materials. The preparation method comprises the following steps: preparing an electroplating solution first, then putting a copper plate as an anode and a titanium plate as a cathode in an electroplating groove, connecting a powersupply and introducing a current to electroplate; stirring the electroplating solution continuously in the electroplating process and regulating the content of carbon nano tubes in a film by changingthe current density; taking out the titanium plate after electroplating for a while for vacuum drying and then taking the composite film down from the titanium plate; tailoring the composite film taken down and overlaying the tailored film and putting the film in a hydraulic machine to be pre-pressed; and preparing a bulk composite material by the composite film through a sintering process after pre-pressing to obtain the laminar carbon nano tube enhanced copper-based composite material. By adopting a composite electrodepositing method, distribution of carbon nano tubes in a copper matrix is regulated by changing the current density in the electroplating process, so that the composite material obtains good comprehensive mechanical properties.

Description

technical field [0001] The invention relates to a method for preparing a layered carbon nanotube-reinforced copper-based composite material, which belongs to the field of composite material preparation. Background technique [0002] Carbon nanotubes (CNTs) are regarded as an ideal reinforcement for composite materials due to their excellent properties, and have become a research hotspot in the field of materials science. Carbon nanotube-reinforced copper-based composite materials can be used in contacts, welding electrodes and other fields. The addition of carbon nanotubes can greatly improve the comprehensive performance of copper-based materials, which has strong research value and application prospects. However, there are still many problems in the research of carbon nanotube-reinforced metal matrix composites, for example, the improvement of strength is often at the expense of plasticity. In order to balance the strength and plasticity of composite materials, it is nece...

Claims

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Application Information

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IPC IPC(8): C25D3/38C25D15/00C25D5/50
CPCC25D3/38C25D5/50C25D15/00
Inventor 陶静梅王梦圆易健宏刘意春鲍瑞李凤仙李才巨游昕谈松林
Owner KUNMING UNIV OF SCI & TECH
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