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Preparation method of graphene coating conductive fiber

A conductive fiber and graphene technology, applied in the direction of fiber type, fiber treatment, natural fiber, etc., can solve the problems of poor conductivity, poor bonding ability, and less conductive coating, so as to enhance the conductivity and improve the conductivity. , to avoid the effect of poor electrical conductivity

Active Publication Date: 2018-11-09
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the above method can coat the conductive material on the fiber, due to the poor binding ability, after washing, the conductive coating becomes less or disappears, and the conductivity is significantly deteriorated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing graphene-coated conductive fibers. The protein fibers are soaked in a positively charged graphene oxide dispersion at a temperature of 10°C. The pH of the protein fibers is > pI, the surface is negatively charged, and the adsorption is positively charged. The graphene oxide is taken out, rinsed with deionized water and dried, and then the graphene oxide on the surface of the fiber is reduced to graphene by a chemical reduction method to obtain a graphene-coated conductive fiber. Wherein, the mass ratio of negatively charged protein fibers on the surface to the positively charged graphene oxide dispersion is 1:100, and the preparation method of the positively charged graphene oxide dispersion is as follows: 5mM AlCl was added to the graphene oxide dispersion 3 Solution, the prepared concentration is 0.1mg / mL positively charged graphene oxide dispersion liquid, negatively charged graphene oxide dispersion liquid and AlCl 3 The volume ratio of the s...

Embodiment 2

[0030]A preparation method of a graphene-coated conductive fiber, the modified negatively charged polyacrylonitrile fiber is soaked in a positively charged graphene oxide dispersion at a temperature of 15°C, taken out for rinsing with deionized water and Drying, then immersing in negatively charged graphene oxide dispersion, taking it out, rinsing with deionized water and drying, then reducing the graphene oxide on the fiber surface to graphene by high-temperature thermal reduction method to obtain graphene-coated conductive fibers. Wherein the mass ratio of the polyacrylonitrile fiber with negative charge on the surface to the graphene oxide dispersion liquid with positive charge is 1:100, and the graphene oxide dispersion liquid with positive charge refers to the concentration of 1.5mg / mL oxidation to negative charge. The concentration of 0.1M FeCl was added to the graphene dispersion 3 The prepared concentration in the solution is the positively charged graphene oxide dispe...

Embodiment 3

[0033] A preparation method of a graphene-coated conductive fiber, the modified negatively charged PET fiber is soaked in a positively charged graphene oxide dispersion at a temperature of 20 ° C, taken out for rinsing and drying with deionized water, Then soak into the negatively charged graphene oxide dispersion, take it out, rinse and dry with deionized water, then soak again into the positively charged graphene oxide dispersion, take out the deionized water, rinse and dry, and finally use the ultraviolet method Graphene oxide on the surface of the fiber is reduced to graphene to obtain a graphene-coated conductive fiber. Wherein the mass ratio of the negatively charged PET fiber on the surface to the positively charged graphene oxide dispersion is 1:80, and the positively charged graphene oxide dispersion refers to graphite oxide with a negatively charged concentration of 4.0 mg / mL 200mM TiCl was added to the ene dispersion 4 The prepared concentration in the solution is ...

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Abstract

The invention relates to a preparation method of a graphene coating conductive fiber. The preparation method comprises the steps that graphene oxide is assembled on a fiber by electrostatic interaction, and then subjected to reduction treatment to obtain the graphene coating conductive fiber, wherein the assembly is achieved by immersing the fiber with charges on the surface in a graphene oxide dispersion at a temperature of 10 to 30 DEG C for one or more times, the graphene oxide in the adjacent two immersed graphene oxide dispersions is oppositely charged each time, the soaking time is 5 to10 min each time, and post-treatment is conducted after each soaking; multiple soaking is 2 to 8 times; the conductivity of the obtained graphene coating conductive fiber is 10 to 1.5 multiply 10<3>S / m, and the conductivity remains above 95% or more after washing for 100 times. The preparation method is simple, the fiber coating efficiency is effectively improved by an electrostatic assembly method, the used coating layer is all graphene, the electrical conductivity and water washing performance of the fiber are significantly improved, and the preparation method of the graphene coating conductive fiber has a great application prospect.

Description

technical field [0001] The invention belongs to the field of graphene conductive fiber preparation and relates to a preparation method of graphene-coated conductive fiber. Background technique [0002] Smart fiber is an important direction of fiber development in the future. The new electronic smart fiber based on the integration of electronic technology with sensing, communication, artificial intelligence and other technologies is one of the important varieties, and its basic unit is conductive fiber. However, most of the current synthetic fibers are not conductive. In order to make them conductive, they are mostly modified with conductive materials such as metal / metal oxide particles, conductive polymers and carbon nanomaterials. The modification methods in the prior art can be mainly divided into blend spinning and surface coating. Compared with blend spinning, the surface coating method is simple and easy. [0003] Graphene is a two-dimensional carbon nanomaterial that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/74D06M101/10D06M101/28D06M101/32D06M101/02
CPCD06M11/74D06M2101/02D06M2101/10D06M2101/28D06M2101/32
Inventor 柯福佑陈烨王华平宋非张慧颖李明明
Owner DONGHUA UNIV
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