Preparation method for multilayer carbon nano tube/copper composite strip

A technology of multi-layer carbon nanotubes and composite strips, applied in metal rolling, metal rolling, manufacturing tools, etc., can solve problems such as uneven microstructure, and achieve high effective deformation efficiency, large size, and high purity Effect

Inactive Publication Date: 2017-11-24
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for preparing a multilayer carbon nanotube / copper composite strip, which can maximize the use of shear compression plastic deformation and multi-pass cumulative stacking in the asynchronous rolling process The cumulative equivalent true strain obtained by rolling can enhance the bonding of the composite interface within a limited number of passes under the premise of maintaining the thickness of the strip, effectively avoiding the agglomeration of carbon nanotubes, internal defects and uneven microstructure of the composite material, and preparing The multilayer carbon nanotube / copper composite has uniform thickness, high surface finish, uniform microstructure and no internal defects

Method used

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  • Preparation method for multilayer carbon nano tube/copper composite strip
  • Preparation method for multilayer carbon nano tube/copper composite strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: a kind of preparation method of multilayer carbon nanotube / copper composite strip is characterized in that, concrete steps are:

[0026] (1) Put the industrial pure copper (T2) strip with a thickness of 0.1mm and a width of 60mm in a hydrochloric acid solution for 5 minutes, wherein the concentration of the hydrochloric acid solution is 6mol / L, wash and air-dry;

[0027] (2) The product obtained in step (1) is subjected to surface grinding pretreatment, so that the oxide layer on the surface of the pure copper strip is peeled off, exposing the metal structure body;

[0028] (3) uniformly coating the carbon nanotube powder on the surface of the pretreated product obtained in step (2), wherein the coating thickness of the carbon nanotube is 5 μm, and drying to obtain the carbon nanotube / copper strip;

[0029] (4) Stack the carbon nanotube / copper strip obtained in step (3), and rivet after stacking so that the surface coated with the carbon nanotube is closel...

Embodiment 2

[0032] Embodiment 2: a kind of preparation method of multilayer carbon nanotube / copper composite strip is characterized in that, concrete steps are:

[0033] (1) Put the CuZn40 (H62) copper alloy strip with a thickness of 1 mm and a width of 100 mm in a hydrochloric acid solution for 15 minutes, wherein the concentration of the hydrochloric acid solution is 9 mol / L, wash and air-dry;

[0034] (2) Perform surface grinding pretreatment on the product obtained in step (1) to peel off the oxide layer on the surface of the CuZn40 (H62) copper alloy strip, exposing the metal structure body;

[0035] (3) Evenly coat the carbon nanotube coating on the surface of the pretreated product obtained in step (2), wherein the carbon nanotube coating is a mixture of carbon nanotubes and ethanol, the coating thickness of the carbon nanotubes is 10 μm, and drying to obtain carbon nanotubes Nanotube / CuZn40 (H62) copper alloy strip;

[0036] (4) Stack the carbon nanotube / CuZn40 (H62) copper alloy...

Embodiment 3

[0039] Embodiment 3: a kind of preparation method of multilayer carbon nanotube / copper composite strip is characterized in that, concrete steps are:

[0040] (1) Put the CuSn4 copper alloy strip with a thickness of 2mm and a width of 10mm in a hydrochloric acid solution for 15 minutes, wherein the concentration of the hydrochloric acid solution is 12mol / L, wash it, and air-dry it;

[0041] (2) Perform surface grinding pretreatment on the product obtained in step (1), so that the oxide layer on the surface of the CuSn4 copper alloy strip is peeled off, exposing the metal structure body;

[0042] (3) Evenly coat the carbon nanotube coating on the surface of the pretreated product obtained in step (2), wherein the carbon nanotube coating is a mixture of carbon nanotubes and ethanol, the coating thickness of the carbon nanotubes is 20 μm, and drying to obtain carbon nanotubes Nanotube / CuSn4 copper alloy strip;

[0043] (4) The carbon nanotube / CuSn4 copper alloy strips obtained in s...

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Abstract

The invention relates to a preparation method for a multilayer carbon nano tube / copper composite strip, and belongs to the technical field of composite materials. The preparation method comprises the steps that a copper or copper alloy strip is subjected to acid pickling and grinding pretreatment, the surface of the copper or copper alloy strip is coated with a carbon nano tube coating, then the copper or copper alloy strip is folded in the middle and is subjected to asynchronous cold rolling, and the grinding-coating-cold rolling process is repeated for 1-8 times so as to obtain the multi-layer carbon nano tube / copper or copper alloy composite strip. The preparation method for the multilayer carbon nano tubes / copper composite strip has the advantages that the requirement for equipment capacity is low, the process is simple, the controllability is high, the energy consumption is low, the product purity is high, the surface is bright, clean and smooth, and the method is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a preparation method of a multilayer carbon nanotube / copper composite strip, belonging to the technical field of composite materials. Background technique [0002] Copper has high electrical conductivity, excellent thermal conductivity, and good processing ductility, and is widely used in the electrical and electronic fields. However, copper and its alloy materials are far from meeting the needs of society for high comprehensive performance conductive materials such as high conductivity and high strength. Due to its unique single-layer or multi-layer tubular structure, carbon nanotubes (CNTs) have low density (only 1.8g / cm3 is about one-sixth of steel), large aspect ratio, high elastic modulus, and high Good mechanical properties such as wear resistance, good thermal conductivity and electrical conductivity, and low thermal expansion coefficient physical and chemical properties, so carbon nanotubes are known as ideal reinforce...

Claims

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Application Information

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IPC IPC(8): B21B1/38B21B47/00
CPCB21B1/38B21B47/00B21B2001/383B21B2001/386
Inventor 周蕾蔡晓兰史庆南
Owner KUNMING UNIV OF SCI & TECH
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