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Method for surface modification by grafting carbon fiber to graphene oxide through plasma

A plasma and surface modification technology, applied in carbon fiber, fiber treatment, ultrasonic/acoustic fiber treatment, etc., can solve problems that do not involve plasma grafted graphene oxide surface modification methods, and shorten the modification time , fiber performance loss is small, the effect of strong applicability

Inactive Publication Date: 2016-12-07
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Graphene oxide is a material with the best strength, excellent electrical conductivity and thermal conductivity of known materials. At present, the existing plasma-treated carbon fiber surface modification technology patents do not involve the surface modification of plasma-grafted graphene oxide. method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0029] (1) Place the carbon fiber on the oxygen plasma device. In an open environment, spray oxygen plasma onto the surface of the carbon fiber to make the carbon fiber move in the oxygen plasma atmosphere. The processing power is 100W and the time is 60s to produce surface modification. The treated carbon fibers were vacuum-dried at 60° C. to constant weight to obtain carbon fibers treated with oxygen plasma.

[0030] (2) Graphene oxide was added into the acetone grafting liquid, and ultrasonically treated for 20 minutes to obtain a graphene oxide acetone grafting solution with a graphene oxide concentration of 0.2 g / L.

[0031] (3) Add the plasma-treated carbon fiber to the graphene oxide acetone grafting solution obtained in step 2, then raise the temperature of the mixed solution to 70°C, react at a constant temperature for 10 hours, and then rinse the grafted carbon fiber with deionized water Washing was repeated 6 times, and then the washed carbon fiber was vacuumed to d...

example 2

[0033] (1) Put the carbon fiber on the argon plasma device, and spray the argon plasma onto the surface of the carbon fiber in an open environment, so that the carbon fiber moves in the argon plasma atmosphere, the processing power is 100W, and the time is 60s to produce surface modification. The treated carbon fibers were vacuum-dried at 60° C. to constant weight to obtain carbon fibers treated with argon plasma.

[0034] (2) Graphene oxide was added into the acetone grafting liquid, and ultrasonically treated for 20 minutes to obtain a graphene oxide acetone grafting solution with a graphene oxide concentration of 0.2 g / L.

[0035] (3) Add the plasma-treated carbon fiber to the graphene oxide acetone grafting solution obtained in step 2, then heat the mixed solution to 70°C, react at a constant temperature for 10 hours, and then rinse the grafted carbon fiber with deionized water Washing was repeated 6 times, and then the washed carbon fiber was vacuumed to dryness at 60°C. ...

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Abstract

The invention relates to a method for surface modification by grafting a carbon fiber to graphene oxide through plasma. The graphene oxide is used as a surface grafting material of the carbon fiber; the carbon fiber is subjected to surface modification through the plasma, and then the graphene oxide is grafted with the carbon fiber so as to form a high-performance composite material. The method is low in cost, easy to operate and high in practicability. The method has the advantages that equipment for carbon fiber surface modification is low in investment cost, and the method is low in cost, easy to operate, high in practicability, good in treatment effect, low in fiber performance loss and reliable in quality. The modification time can be greatly shortened, the use amount of chemicals and the product cost are reduced, the environmental pollution is reduced, and the method is applicable to the industrial production.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber surface modification, in particular to a method for surface modification of carbon fiber plasma grafted graphene oxide. Background technique [0002] Carbon fiber refers to a fiber material that has been carbonized at a high temperature and contains more than 85% carbon, including carbon fiber and graphite fiber. Carbon fiber is a fiber with a carbon content of 85% to 95% after the organic fiber is treated at 1000-2300°C; graphite fiber is a fiber with a carbon content of more than 98% after the organic fiber is treated at 2300°C. A high-performance fiber, because of its high specific strength, high specific modulus, small thermal expansion coefficient, low friction coefficient, and good low temperature resistance, it has become the most important reinforcing material for resin-based composite materials in recent years, and is widely used in aerospace. Components and sporting goods. The sur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M10/06D06M11/74D06M10/02D06M101/40
CPCD06M10/06D06M10/025D06M11/74D06M2101/40
Inventor 蒋建军郭强徐楚朦周林超苏洋姚旭明
Owner NORTHWESTERN POLYTECHNICAL UNIV
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