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Microwave radiation treatment method and microwave radiation treatment device for improving surface activity of carbon fibers

A technology of microwave radiation and surface activity, which is applied in fiber processing, radiation wave/microwave fiber processing, carbon fiber, etc., can solve the problems of complicated processing technology, high energy consumption, and difficult industrial operation, and achieve broad application prospects and low energy consumption. Low, the effect of increasing the interlaminar shear strength

Active Publication Date: 2016-08-24
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the surface treatment methods of carbon fiber mainly include gas phase oxidation, liquid phase oxidation, electrochemical oxidation, surface coating treatment, etc. The treatment process is complicated, the energy consumption is high, and it is accompanied by high temperature, strong oxidation, etc., and industrial operation is difficult.

Method used

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  • Microwave radiation treatment method and microwave radiation treatment device for improving surface activity of carbon fibers
  • Microwave radiation treatment method and microwave radiation treatment device for improving surface activity of carbon fibers
  • Microwave radiation treatment method and microwave radiation treatment device for improving surface activity of carbon fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of microwave radiation treatment method that carbon fiber surface activity improves, comprises the following steps:

[0032] Step 1: Extract Toray T300 fiber tow in acetone for 48 hours to remove the sizing agent on the fiber surface.

[0033] Step 2: Sonicate the carbon fiber from which the sizing agent has been removed in deionized water for 1 hour to remove the acetone reagent on the surface of the fiber.

[0034] Step 3: Place the carbon fiber taken out of the deionized water in a vacuum drying oven at 60° C. for 24 hours to dry to ensure that the surface of the carbon fiber is dry to obtain unsized T300 fiber.

[0035] Step 4: Place the unsized T300 fiber on the non-metallic substrate 5, wherein the dielectric constant of the substrate is 3.9. Adjust the angle of the carbon fiber to ensure that the length direction of the carbon fiber is parallel to the long side of the rectangular waveguide, that is, perpendicular to the direction of the microwave electric...

Embodiment 2

[0038] A kind of microwave radiation treatment method that carbon fiber surface activity improves, comprises the following steps:

[0039] Step 1: Sonicate Toray T700 fiber tow in deionized water for 1 hour to remove impurities on the fiber surface.

[0040] Step 2: The carbon fiber taken out of the deionized water is placed in a vacuum drying oven at 60° C. for 24 hours to dry to ensure that the surface of the carbon fiber is dry.

[0041] Step 3: Place the sized T700 fibers on a non-metallic substrate, where the dielectric constant of the substrate is 3.9. Adjust the angle of the carbon fiber to ensure that the length direction of the carbon fiber is parallel to the long side of the rectangular waveguide of the microwave transmission system, that is, perpendicular to the direction of the microwave electric field.

[0042] Step 4: Use the pulsed electromagnetic wave generated by the magnetron microwave generator to radiate the carbon fiber, determine the size of the rectangu...

Embodiment 3

[0047] A kind of microwave radiation treatment method that carbon fiber surface activity improves, comprises the following steps:

[0048] Step 1: Extract Toray T300 fiber tow in acetone for 48 hours to remove the sizing agent on the fiber surface.

[0049] Step 2: Sonicate the carbon fiber from which the sizing agent has been removed in deionized water for 1 hour to remove the acetone reagent on the surface of the fiber.

[0050] Step 3: Place the carbon fibers taken out of the deionized water in a vacuum drying oven at 60° C. for 24 hours to dry to ensure that the surface of the carbon fibers is dry to obtain unsized T300 fibers.

[0051] Step 4: Place the unsized T300 fiber on the non-metallic substrate 5, wherein the dielectric constant of the substrate is 3.9. Adjust the angle of the carbon fiber to ensure that the length direction of the carbon fiber is parallel to the long side of the rectangular waveguide, that is, perpendicular to the direction of the microwave elect...

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Abstract

The invention discloses a microwave radiation treatment method and a microwave radiation treatment device for improving the surface activity of carbon fibers. The microwave radiation treatment method and the microwave radiation treatment device have the advantages that TE10 transverse electric waves are subjected to single-mode transmission in metal rectangular waveguides by the aid of microwave generated in a microwave generator, and the carbon fibers are subjected to radiation treatment by the aid of microwave energy via a flared antenna; the carbon fibers are etched by the microwave, accordingly, the depths of grooves in the surfaces of the carbon fibers can be increased, and the roughness of the surfaces of the carbon fibers can be improved; bonding of single crystals on the surfaces of the carbon fibers is destroyed under the radiation effects of the microwave, accordingly, active carbon atom points can be increased, O / C atomic ratios of the surfaces of the carbon fibers can be increased, and the contents of oxygen-containing active functional groups can be increased; surface energy of the treated carbon fibers can be increased, accordingly, the activity of the carbon fibers can be improved, and the microwave radiation treatment method and the microwave radiation treatment device are favorable for forming excellent interfaces between the carbon fibers and resin matrixes.

Description

technical field [0001] The invention relates to the field of resin-based composite material production, in particular to a method and device for oxidation modification of carbon fiber surfaces. Background technique [0002] Carbon fiber has a small specific gravity, high specific strength, specific modulus, high temperature resistance, electrical conductivity, thermal conductivity, corrosion resistance and excellent mechanical properties. At present, carbon fiber is mainly used as reinforcement material to manufacture high-performance resin-based composite materials, which are widely used in aviation Aerospace, military equipment, energy and transportation and other fields. Carbon fiber has a graphite microcrystalline structure, the surface is inert, and the bonding performance with the resin matrix is ​​relatively poor. In order to give full play to the excellent performance of carbon fiber, it is necessary to activate the surface of carbon fiber to obtain high-performance ...

Claims

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Application Information

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IPC IPC(8): D06M10/00C08K9/00C08K7/06D06M101/40
CPCD06M10/003C08K7/06C08K9/00D06M2101/40
Inventor 段玉岗张静静赵新明
Owner XI AN JIAOTONG UNIV
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