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A kind of graphene hollow fiber and continuous preparation method thereof

A graphene and hollow technology, applied in the field of fibers, can solve the problems such as the small adjustment range of the hollow diameter and wall thickness of the graphene hollow fiber, and the limited preparation method of the graphene hollow fiber.

Inactive Publication Date: 2019-03-29
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, looking at the existing patents and literature reports, the preparation methods of graphene hollow fibers are very limited, and none of the existing methods can achieve continuous preparation at room temperature without reduction.
In addition, the adjustment range of the hollow diameter and wall thickness of the graphene hollow fiber prepared by the existing method is small

Method used

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  • A kind of graphene hollow fiber and continuous preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0023] A kind of continuous preparation method of graphene hollow fiber, concrete steps are:

[0024] A coil of copper wire with a diameter of 20 μm is selected and the length is 1000 meters. The copper wire is pulled out continuously and immersed in a lithium perchlorate solution of graphene oxide, wherein the mass percentage of lithium perchlorate is 0.5%, and the mass percentage of graphene oxide is 0.1%. Then electrochemically plate graphene on the copper wire surface by a three-electrode system, the working electrode of the three-electrode system is a copper wire, the counter electrode is a platinum wire with a length of 1 meter, the reference electrode is a silver / silver chloride electrode, and the platinum The wire and the copper wire are arranged in parallel, and the distance between them is 2mm. The silver / silver chloride electrode was placed in a lithium perchlorate solution of graphene oxide at the midpoint of the length of the platinum wire, close to but not in co...

Embodiment 2

[0026] A kind of continuous preparation method of graphene hollow fiber, concrete steps are:

[0027] A coil of copper wire with a diameter of 20 μm is selected and the length is 1000 meters. The copper wire is pulled out continuously and immersed in a lithium perchlorate solution of graphene oxide, wherein the mass percentage of lithium perchlorate is 0.7%, and the mass percentage of graphene oxide is 1%. Then electrochemically plate graphene on the copper wire surface by a three-electrode system, the working electrode of the three-electrode system is a copper wire, the counter electrode is a platinum wire with a length of 1 meter, the reference electrode is a silver / silver chloride electrode, and the platinum The wire and the copper wire are arranged in parallel, and the distance between them is 2mm. The silver / silver chloride electrode was placed in a lithium perchlorate solution of graphene oxide at the midpoint of the length of the platinum wire, close to but not in cont...

Embodiment 3

[0029] A kind of continuous preparation method of graphene hollow fiber, concrete steps are:

[0030] A coil of copper wire with a diameter of 100 μm is selected and the length is 1000 meters. The copper wire is pulled out continuously and immersed in a sulfuric acid solution of graphene oxide, wherein the mass percentage of sulfuric acid is 0.5%, and the mass percentage of graphene oxide is 1%. Then electrochemically plate graphene on the copper wire surface by a three-electrode system, the working electrode of the three-electrode system is a copper wire, the counter electrode is a platinum wire with a length of 1 meter, the reference electrode is a silver / silver chloride electrode, and the platinum The wire and the copper wire are arranged in parallel, and the distance between them is 2mm. The silver / silver chloride electrode was placed in the sulfuric acid solution of graphene oxide at the middle point of the length of the platinum wire, close to the copper wire and the pl...

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Abstract

The invention provides a graphene hollow fiber and a continuous preparation method thereof. The continuous preparation method of the graphene hollow fiber is characterized by comprising the following steps: continuously drawing copper wires out and immersing the drawn-out copper wires in a graphene oxide electrolyte; then, electrochemically plating graphene on the surfaces of the copper wires through a three-electrode system; next, continuously collecting the copper wires of which the surfaces are coated with the graphene, and rolling the collected copper wires into rolls; subsequently, immersing the rolls in an aqueous solution of ferric chloride to dissolve the copper wires; and finally, performing cleaning and drying so as to obtain the graphene hollow fiber. According to the graphene hollow fiber prepared by using the method, the hollow diameter and the thickness of a pipe wall can be adjusted and changed in a wide range, and a solid foundation for the applications of the graphene hollow fiber in the aspects of filtration and separation, energy, sensing, braking and the like is established.

Description

technical field [0001] The invention relates to a graphene hollow fiber and a continuous preparation method thereof, belonging to the field of fiber technology. Background technique [0002] The fiber of the present invention has been deeply applied to a wide range of fields of national defense and national economy, such as aerospace, missile armor, medical environmental protection, home decoration and wear. The advantages of traditional natural fibers and chemical fibers, such as cotton fiber, hemp fiber, polyester fiber, nylon fiber, vinylon fiber and polypropylene fiber, mainly lie in mechanical properties and wearing properties. However, with the rapid development of science and technology, especially the rapid update of electronic information technology, fibers need to have higher performance and more functions, such as higher strength, excellent electromagnetic properties, sensitive response, good chemical stability sex etc. Therefore, new fibers need to be developed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D9/04C23F1/14C01B32/182C01B32/184
CPCC23F1/14C25D9/04
Inventor 翁巍朱美芳杨俊杰杜骁文
Owner DONGHUA UNIV
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