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Method of quickly and continuously depositing graphene on surface of electric-conductive fibers

A conductive fiber and graphene technology, applied in the direction of carbon fiber, fiber type, fiber treatment, etc., can solve the problems of uneven deposition, small improvement in the mechanical properties of conductive fibers, long electrophoresis time, etc., to achieve strong controllability and improve the surface Performance and wetting performance, low risk effect

Inactive Publication Date: 2017-05-10
HARBIN INST OF TECH
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for rapidly and continuously depositing graphene on the surface of conductive fibers in order to solve the problems of long electrophoresis time, uneven deposition and small improvement in the mechanical properties of conductive fibers in the traditional electrophoretic deposition method

Method used

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  • Method of quickly and continuously depositing graphene on surface of electric-conductive fibers
  • Method of quickly and continuously depositing graphene on surface of electric-conductive fibers
  • Method of quickly and continuously depositing graphene on surface of electric-conductive fibers

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specific Embodiment approach 1

[0026] Specific embodiment one: the method for rapidly and continuously depositing graphene on the conductive fiber surface of the present embodiment is carried out according to the following steps:

[0027] 1. Preparation of graphene oxide solution: disperse graphene oxide and dispersant in a solvent, and use an ultrasonic cleaning machine to sonicate for 1 to 3 hours to form a uniformly dispersed graphene oxide solution;

[0028] 2. Conductive fiber desizing treatment: Add conductive fiber bundles and acetone to the extraction tube and extraction bottle of the Soxhlet extractor respectively, and heat the acetone in the extraction bottle at a heating temperature of 75-85°C to vaporize the acetone. The connecting pipe rises into the condenser, and the condensed liquid drips into the extraction tube to extract the sizing agent on the surface of the conductive fiber bundle; when the acetone liquid level in the extraction tube reaches a certain height, the acetone dissolved with t...

specific Embodiment approach 2

[0032] Embodiment 2: This embodiment is different from Embodiment 1 in that the dispersant is polyvinylpyrrolidone, monoglyceride stearate or ethylene bisstearamide. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0033] Embodiment 3: This embodiment is different from Embodiment 1 in that the solvent is isopropanol, water, ethanol or dimethylformamide. Other steps and parameters are the same as those in the first embodiment.

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Abstract

A method of quickly and continuously depositing graphene on surface of electric-conductive fibers. The invention relates to the technical field of surface modification of electric-conductive fibers and aims to solve the problems that a conventional electrophoretic deposition method in the prior art is long in electrophoretic time, is not-homogeneous in deposition and is low in increase range on mechanical performances of the electric-conductive fibers. The method includes the steps of: 1) preparing an graphene oxide solution; 2) desizing the electric-conductive fibers; 3) preparing an electrophoretic solution; 4) performing electrophoretic deposition of graphene oxide with ultrasonic assistance; and 5) thermal-reducing the electric-conductive fibers on which the graphene oxide is deposited. The method is used for surface modification for fibers.

Description

technical field [0001] The invention relates to the technical field of surface modification of conductive fibers. Background technique [0002] Carbon fiber (CF) has the characteristics of high specific strength and specific modulus, light weight, high temperature resistance, chemical corrosion resistance, excellent thermal and electrical conductivity, and small thermal expansion coefficient. It is an important structural material reinforcement, carbon fiber and carbon fiber composite materials It is widely used in aerospace, national defense and military industry, machinery manufacturing and other fields. [0003] The interfacial bonding strength between carbon fiber and matrix is ​​the main factor determining the mechanical properties of carbon fiber composites. Good interfacial bonding can effectively transfer stress and improve the mechanical properties of materials. However, the surface of untreated carbon fiber is inert and the interface with the resin matrix is ​​wea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/74C25D13/02D06M101/18D06M101/30D06M101/40
CPCD06M11/74C25D13/02D06M2101/18D06M2101/30D06M2101/40
Inventor 黄玉东王彩凤黎俊孙少凡刘丽赵敏谢飞
Owner HARBIN INST OF TECH
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