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A composite electrically conductive fiber and a preparing method thereof

A composite conductive and fiber technology, applied in fiber processing, fiber types, textiles and papermaking, etc., can solve the problems of low preparation efficiency and inability to prepare high strength composite conductive fibers with high conductivity and high cohesion

Active Publication Date: 2018-01-05
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a new composite conductive fiber and its preparation method in order to overcome the defect that the composite conductive fiber with high strength, high conductivity and high cohesiveness cannot be prepared or the preparation efficiency is low in the prior art

Method used

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  • A composite electrically conductive fiber and a preparing method thereof
  • A composite electrically conductive fiber and a preparing method thereof
  • A composite electrically conductive fiber and a preparing method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0072] This example is used to illustrate the composite conductive fiber provided by the present invention and its preparation method.

[0073] a. Degreasing: Under ultrasonic conditions with a power of 20W / L, wash the aramid fiber in ethanol for 20 minutes, rinse it with deionized water for 5 times after cleaning, and dry it in vacuum for later use;

[0074] b. Polymer coating: prepare bisphenol A diether dianhydride (BPADA) and 4'4-diaminodiphenyl ether (ODA) monomer solution, the concentration is 50g / L, the aramid fiber after degreasing Placed in the monomer solution and reacted at 10°C for 13 hours to obtain polyamic acid-coated aramid fibers;

[0075] c. ultrasonically clean the aramid fibers obtained in step b with a mixed solution of deionized water and N-methylpyrrolidone (wherein the content of N-methylpyrrolidone is 5% by weight) at 45°C for 3 times, each cleaning The time is 20 minutes, the ultrasonic power is 20W / L, the amount of the mixed solution is only require...

Embodiment 2

[0082] This example is used to illustrate the composite conductive fiber provided by the present invention and its preparation method.

[0083] a. Degreasing: Under ultrasonic conditions with a power of 30W / L, place the aramid fiber in dimethyl sulfoxide for 40 minutes, rinse it with deionized water for 5 times, and dry it in vacuum for later use;

[0084] b. Polymer coating: prepare vinyl chloride-vinyl acetate monomer solution, the concentration of vinyl chloride is 300mL / L, and the concentration of vinyl acetate is 80g / L, and the aramid fibers after degreasing are placed in the monomer solution at 50 Reaction at ℃ for 13 hours to obtain aramid fiber coated with vinyl acetate resin;

[0085] c. ultrasonically clean the aramid fibers obtained in step b with a mixed solution of deionized water and dimethyl sulfoxide (wherein the content of dimethyl sulfoxide is 10% by weight) at 50°C for 5 times, each cleaning The time is 20 minutes, the ultrasonic power is 30W / L, the amount ...

Embodiment 3

[0092] This example is used to illustrate the composite conductive fiber provided by the present invention and its preparation method.

[0093] a. Degreasing: Under ultrasonic conditions with a power of 40W / L, place the aramid fiber in carbon tetrachloride for 40 minutes, rinse it with deionized water for 3 times, and dry it in vacuum for later use;

[0094] b. Polymer coating: Prepare an aqueous solution of dopamine monomer with a concentration of 4g / L, place the aramid fibers after degreasing in the monomer solution and react at 30°C for 15 hours to obtain polydopamine-coated aramid fibers ;

[0095] c. ultrasonically clean the aramid fibers obtained in step b with a mixed solution of deionized water and N-methylpyrrolidone (wherein the content of N-methylpyrrolidone is 30% by weight) at 80°C for 3 times, each cleaning The time is 20 minutes, the ultrasonic power is 30W / L, the amount of the mixed solution is only required to make the aramid fibers completely immersed in the...

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Abstract

The invention relates to the field of composite electrically conductive fibers, and discloses a composite electrically conductive fiber and a preparing method thereof. The method includes (1) claddingan organic fiber with a polymer; (2) subjecting the organic fiber clad with the polymer to metal ionic adsorption and reduction to obtain an organic fiber to which a first metal is attached; (3) depositing a second metal on the organic fiber to which a first metal is attached and which is prepared in the step (2); and (4) subjecting the organic fiber obtained in the step (3) to thermal treatmentin an inert atmosphere, wherein the second metal used for deposition in the step (3) is at least one of silver, copper and nickel. The composite electrically conductive fiber prepared by the method has high tensile strength, high electrical conductivity and high adhesive force.

Description

technical field [0001] The invention relates to the field of composite conductive fibers, in particular to a composite conductive fiber and a preparation method thereof. Background technique [0002] Organic conductive fibers coated with metallic silver layers have attracted much attention in the fields of electricity, electronics, medical and aerospace because they combine the excellent conductive properties of the surface silver layer with the characteristics of lightness, softness and bending resistance of organic fibers. It can be widely used in anti-static dust-proof and explosion-proof work clothes, electric heating clothes, electric heating bandages, electromagnetic shielding covers in the precision electronics industry, military smart clothing, flexible wires, military microwave cables, and "stealth materials". Compared with the currently widely used silver-plated metal fibers (usually silver-plated copper wires), the organic conductive fibers have outstanding advant...

Claims

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Application Information

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IPC IPC(8): D06M15/59D06M15/333D06M15/61D06M11/83D06M101/36
Inventor 齐胜利亓玉翠田国峰武德珍
Owner BEIJING UNIV OF CHEM TECH
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