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Graphene-coated conductive fiber and preparation method thereof

A conductive fiber and graphene technology, applied in fiber types, fiber processing, textiles and papermaking, etc., can solve the problems of low interaction force between fiber and graphene, and weak adhesion of graphene, so as to achieve low raw material cost and not easy to fall off , the effect of controllable resistivity

Inactive Publication Date: 2019-05-28
FUJIAN HUACAI NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In CN 105484016 A, conductive fibers are prepared by padding alkali-washed fibers with graphene oxide solution, and the resistivity is about 30-10 5 Ω·cm, has good conductivity, but the interaction force between the fiber and the graphene layer is small, and there is a problem that the graphene is not firmly attached

Method used

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  • Graphene-coated conductive fiber and preparation method thereof
  • Graphene-coated conductive fiber and preparation method thereof
  • Graphene-coated conductive fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1 graphene-coated conductive fiber

[0028] (1) Immerse the nylon fiber in 1g / L casein solution for 10 minutes, wherein the pH of the casein solution is 11, the concentration of the pH regulator NaOH is 0.1mol / L, and then dry the fiber at 65°C;

[0029] (2) Place the fiber prepared in step (1) into distilled water and gently wash it for 5 seconds to wash away excess casein on the surface of the fiber, and then dry it at 65°C;

[0030] (3) The fiber prepared by step (2) was immersed in the 400nm graphene oxide solution with a sheet diameter of 2g / L for 2 minutes, the pH of the graphene oxide solution was 2, and the concentration of pH regulator formic acid was 0.4mol / L, and then Dry at 65°C;

[0031] (4) The fibers prepared in step (3) were reduced in 6 g / L formamidine sulfinic acid at 95° C. for 12 hours, and the composite fibers were washed with distilled water to obtain graphene-coated conductive fibers.

Embodiment 2

[0032] Example 2: Graphene-coated conductive fibers

[0033] (1) Vibrating and dipping the nylon fiber in 1g / L casein solution for 30 minutes, wherein the pH of the casein solution is 12, the concentration of the pH regulator KOH is 0.1mol / L, and then the fiber is naturally air-dried;

[0034] (2) Place the fibers prepared in step (1) into distilled water and gently wash them for 5 seconds to wash off excess casein on the surface of the fibers, and then air-dry them naturally;

[0035] (3) Oscillating and immersing the fiber prepared in step (2) in a 400nm graphene oxide solution with a sheet diameter of 2g / L for 30 minutes, the pH of the graphene oxide solution was 3, and the formic acid concentration of the pH regulator was 0.4mol / L. Dry at 65°C; repeat this step 5 times;

[0036] (4) Place the fiber prepared in step (3) in a 50 g / L vitamin C solution at 70° C. for 15 hours, and wash the composite fiber with distilled water to obtain a graphene-coated conductive fiber.

[...

Embodiment 3

[0038] Embodiment 3: graphene-coated conductive fiber

[0039] (1) Ultrasonic immersion of nylon fiber in 1g / L casein solution for 10 minutes, wherein the pH of the casein solution is 14, the concentration of pH regulator NaOH is 0.1mol / L, and then dried at 65°C;

[0040] (2) Place the fiber prepared in step (1) into distilled water and gently wash it for 5 seconds to wash away excess casein on the surface of the fiber, and then dry it at 65°C;

[0041] (3) Oscillating and immersing the fiber prepared in step (2) in a 10 μm graphene oxide solution with a sheet diameter of 2 g / L for 30 minutes, the pH of the graphene oxide solution was 1, and the formic acid concentration of the pH regulator was 0.4 mol / L. Dry at 65°C; repeat this step 5 times;

[0042] (4) The fibers prepared in step (3) were placed in a 10 g / L vitamin C solution for hydrothermal reduction at 120° C. for 10 h, and the composite fibers were washed with distilled water to obtain graphene-coated conductive fiber...

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Abstract

The inventors provide a preparing method of a graphene-coated conductive fiber. The preparing method of the graphene-coated conductive fiber comprises the following steps of protein adsorption, graphene oxide adsorption, and reduction treatment. According to the technical scheme, and acidic proteins such as casein or peanut protein which are compatible with a fiber are used as adhesive so that theproteins are absorbed on the surface of the fiber; then under acidic condition, graphene oxide with negative Zeta potential and acidic protein with positive Zeta potential are electrostatically adsorbed, and thus graphene oxide is uniformly self-assembled on the surface of the fiber; at the same time, and the fiber exhibits slight swelling in an acidic solution, and the penetration of the graphene oxide solution into the fiber is facilitated. According to the preparing method of the graphene-coated conductive fiber, adhesive force of graphene on the surface of the fiber is increased, the graphene is not liable to fall off, and the raw material cost is low, the technology is simple, the environment-friendly effect is achieved, resistivity is controllable, and application prospect is wide.

Description

technical field [0001] The invention belongs to the field of textile materials, and in particular relates to a graphene-coated conductive fiber and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, the application of traditional fibers has been unable to meet the ever-changing needs of the times. The multifunctional modification of fibers is becoming increasingly important, such as: antistatic, conductive, antibacterial, flame retardant, waterproof, etc. Among them, conductive fibers can be used in the fields of electric heating fabrics, anti-electromagnetic shielding fabrics, flexible electrodes, etc., and have always been an important research and application direction of functional fibers. [0003] Conductive fiber refers to adding conductive media such as carbon black, graphite, metal powder, metal compound and conductive polymer to the fiber, and is often prepared by mixing, evaporation, electroplating, elect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/74D06M15/15D06M101/34D06M101/32
Inventor 金伦方华玉方华珊托马斯·沃尔特施密特姜兴盛徐天雨杨德华李富贵
Owner FUJIAN HUACAI NEW MATERIALS CO LTD
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