A preparation method of flexible conductive material using copper sulfide and carbon nanotube as composite conductive agent

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, the effect of increasing the fill factor

Active Publication Date: 2021-04-16
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 n...

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 method for preparing a flexible conductive material using copper sulfide and carbon nanotubes as composite conductive agents. First, the dimethylformamide solution of polyacrylonitrile is mixed with the carbon nanotube / aziridine crosslinking agent water dispersion, and after coating, it is immersed in the coagulation bath solution for curing. On this basis, the chemical reaction method is used to prepare the following: Copper sulfide and carbon nanotubes are flexible conductive materials for composite conductive agents. The polyacrylonitrile membrane modified by blending carbon nanotubes / polyethylenimine cross-linking agent not only has good flexibility, but also the water in the dispersion acts as a pore-forming agent in the process of membrane formation. The polyethylenimine crosslinking agent / polyacrylonitrile film has a continuous distribution of network holes, so that the conductive copper sulfide is not only deposited on the surface of the flexible film, but also grows inside, so that the formed copper sulfide can not only cover the flexible substrate film The surface, but also penetrates into the interior of the film, so that the composite material has excellent electrical conductivity.

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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Patent Type & Authority Patents(China)
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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