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Preparation method of flexible conductive material taking copper sulfide and carbon nanotubes as composite conductive agents

A composite conductive agent and carbon nanotube technology, applied in the field of conductive materials, can solve the problems of weak bonding between copper sulfide and a matrix, poor stability of composite conductive materials, uneven surface dispersion, etc. Excellent electrical conductivity, strong complexation effect

Active Publication Date: 2019-08-30
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the complexing ability of the cyano group in polyacrylonitrile to copper ions is limited, and the copper sulfide / polyacrylonitrile composite conductive material prepared by this method often has problems such as weak bonding between copper sulfide and the matrix, and uneven surface dispersion. As a result, the composite conductive material has poor stability and low conductivity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of the flexible conductive material using copper sulfide and carbon nanotubes as the composite conductive agent of the present embodiment, the steps are as follows:

[0027] (1) Add 8 grams of carboxylated multi-walled carbon nanotubes to a blend solvent composed of 46 grams of deionized water and 46 grams of aziridine cross-linking agent, and ultrasonically disperse for 4 hours until carboxylated multi-walled carbon nanotubes The tubes are uniformly dispersed to obtain a dispersion of carboxylated multi-walled carbon nanotubes;

[0028] (2) Put 10 grams of polyacrylonitrile in 90 grams of dimethylformamide and stir at 70°C for 2.5 hours to completely dissolve the polyacrylonitrile to obtain a solution of polyacrylonitrile in dimethylformamide;

[0029] (3) Add 15 g of the carboxylated carbon nanotube dispersion obtained in step (1) to 85 g of the polyacrylonitrile solution obtained in step (2), and stir at 80°C for 2 hours to obtain carbon nanotu...

Embodiment 2

[0033] The preparation method of the flexible conductive material using copper sulfide and carbon nanotubes as the composite conductive agent of the present embodiment, the steps are as follows:

[0034](1) Add 2 grams of carboxylated multi-walled carbon nanotubes to a blend solvent composed of 49 grams of deionized water and 49 grams of aziridine cross-linking agent, and ultrasonically disperse for 2 hours until carboxylated multi-walled carbon nanotubes The tubes are uniformly dispersed to obtain a dispersion of carboxylated multi-walled carbon nanotubes;

[0035] (2) Put 20 grams of polyacrylonitrile in 80 grams of dimethylformamide and stir at 60°C for 3 hours to completely dissolve the polyacrylonitrile to obtain a solution of polyacrylonitrile in dimethylformamide;

[0036] (3) Add 5 grams of the carboxylated carbon nanotube dispersion obtained in step (1) to 95 grams of the polyacrylonitrile solution obtained in step (2), and stir at 70°C for 2.5 hours to obtain carbon ...

Embodiment 3

[0040] The preparation method of the flexible conductive material using copper sulfide and carbon nanotubes as the composite conductive agent of the present embodiment, the steps are as follows:

[0041] (1) Add 4 grams of aminated multi-walled carbon nanotubes to a blend solvent composed of 48 grams of deionized water and 48 grams of aziridine cross-linking agent, and ultrasonically disperse for 4 hours until carboxylated multi-walled carbon nanotubes The nanotubes are uniformly dispersed, and the dispersion liquid of aminated multi-walled carbon nanotubes is obtained;

[0042] (2) Put 10 grams of polyacrylonitrile in 90 grams of dimethylformamide and stir at 80°C for 2 hours to completely dissolve the polyacrylonitrile to obtain a polyacrylonitrile dimethylformamide solution;

[0043] (3) Add 10 grams of the aminated multi-walled carbon nanotube dispersion obtained in step (1) to 90 grams of the polyacrylonitrile solution obtained in step (2), and stir at 70°C for 2.5 hours ...

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Abstract

The invention relates to the field of conductive materials, in particular to a preparation method of a flexible conductive material taking copper sulfide and carbon nanotubes as composite conductive agents. The method comprises the steps as follows: firstly, mixing a dimethylformamide solution of polyacrylonitrile with an aqueous dispersion of carbon nanotubes / aziridine cross-linking agent, immersing a product in a coagulation bath solution for curing after film coating, and preparing the flexible conductive material taking copper sulfide and carbon nanotubes as the composite conductive agentsby a chemical reaction on the basis. A polyacrylonitrile film obtained by blending modification of a carbon nanotube / aziridine cross-linking agent has good flexibility, and furthermore, water in thedispersion plays the role of a pore-forming agent in the membrane forming process. The polyaziridine cross-linking agent / polyacrylonitrile film has a continuously distributed network pore structure, so that conductive copper sulfide is not only deposited on the surface of a flexible film, but also grows in the inside, formed copper sulfide can not only cover the surface of the flexible substrate film, but also penetrate to inside of the film, and the composite material has excellent conductive performance.

Description

technical field [0001] The invention relates to the field of conductive materials, in particular to a method for preparing a flexible conductive material using copper sulfide and carbon nanotubes as composite conductive agents. Background technique [0002] Polymer materials are light in weight, cheap, superior in mechanical and electrical insulation properties, convenient in processing, and safe in use, so they have achieved rapid development and wide application. Polymer material facilitates people's life because of its excellent insulation, but it also brings many troubles and even disasters. In recent years, with the rapid development of electronic devices and large-scale integrated circuits, the hazards of static electricity and electromagnetic waves have become more prominent. Therefore, it is of great practical significance to change the insulation properties of polymer materials. [0003] To make conventional polymer materials antistatic, researchers have used meta...

Claims

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Application Information

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IPC IPC(8): C08L33/20C08K3/04C08J5/18C08J7/12
CPCC08J5/18C08J7/12C08J2333/20C08K3/041
Inventor 裴海燕潘玮张慧勤曲良俊陈燕刘红燕张艳丽
Owner ZHONGYUAN ENGINEERING COLLEGE
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