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Method for preparing functional carbon fibers

A technology for functionalizing carbon and carbon fiber, applied in the direction of carbon fiber, ultrasonic/sonic fiber treatment, etc., can solve the problems of the method that does not involve the surface modification of plasma grafted thermoplastic resin, and achieves shortening modification time, reducing dosage, reducing The effect of product cost

Inactive Publication Date: 2017-01-04
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Thermoplastic resin is a material with good impact resistance and excellent electrical properties. At present, the existing patents on plasma treatment of carbon fiber surface modification technology do not involve the method of surface modification of plasma grafted thermoplastic resin.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0026] (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. (2) Add the PE-polyethylene resin into the acetone solution, and ultrasonically treat it for 20 minutes to obtain a PE-polyethylene / acetone graft solution with a concentration of 3 g / L of the PE-polyethylene / acetone graft solution. (3) Add the plasma-treated carbon fiber to the PE-polyethylene / acetone grafting solution obtained in step 2, and then raise the temperature of the mixed solution to 70°C, react at a constant temperature for 10 hours, and then use up the grafted carbon fiber Ionized water was washed repeatedly for 6 times, and then the washed carbon fiber was v...

example 2

[0028] (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. (2) Add the PE-polyethylene resin into the acetone solution, and ultrasonically treat it for 20 minutes to obtain a PE-polyethylene / acetone graft solution with a concentration of 3 g / L of the PE-polyethylene / acetone graft solution. (3) Add the plasma-treated carbon fiber to the PE-polyethylene / acetone grafting solution obtained in step 2, and then raise the temperature of the mixed solution to 70°C, react at a constant temperature for 10 hours, and then use up the grafted carbon fiber The deionized water was washed repeatedly for 6 times, and then the washed carbon f...

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PUM

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Abstract

The invention relates to a method for preparing functional carbon fibers. Thermoplastic resin is used as a surface grafting material of the carbon fibers, surface modification is carried out on the carbon fibers by plasma, and the thermoplastic resin is grafted to form a high-performance composite material. The method provided by the invention has the advantages of low investment cost of surface modification equipment of the carbon fibers, low cost, simple operation, strong applicability, good treatment effect, small loss of fiber performance and reliable quality. The modification time is greatly shortened, the amount of chemicals is reduced, the product cost is lowered, the environmental pollution is reduced, and industrial production is applicable.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber surface modification, in particular to a preparation method of functionalized carbon fiber. 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 surface of carbon fiber is iner...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M10/02D06M15/227D06M101/40
CPCD06M10/02D06M15/227D06M2101/40
Inventor 蒋建军徐楚朦郭强周林超苏洋邓国力
Owner NORTHWESTERN POLYTECHNICAL UNIV
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