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Carbon fiber surface treatment method and application

A surface treatment and carbon fiber technology, applied in the field of carbon fiber manufacturing, can solve the problems of insufficient comprehensive mechanical properties of composite materials, large amount of waste liquid, and large environmental pollution, achieving excellent mechanical properties, improved production efficiency, and reduced investment. Effect

Active Publication Date: 2018-09-21
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the electrochemical oxidation method has the problems of high energy consumption, large amount of waste liquid, and great environmental pollution, and the comprehensive mechanical properties of composite materials have not been fully utilized.

Method used

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  • Carbon fiber surface treatment method and application
  • Carbon fiber surface treatment method and application
  • Carbon fiber surface treatment method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Get carbon fiber tow (manufactured by Toho Corporation in Japan, model: HTS40), and there is epoxy resin sizing agent on the surface of carbon fiber. Press the carbon fiber asfigure 1 The laser irradiation is set as shown, and the laser irradiation treatment is carried out at room temperature and atmospheric pressure nitrogen atmosphere to obtain the carbon fiber tow after surface treatment. The irradiation conditions are: the wavelength of the laser used is 1064nm (Nd: YAG laser), the irradiation power is 5W, the laser beam focusing radius is 0.05mm, the fiber transmission speed is 0.5m / min, the irradiation dose is 0.05MGy, the laser irradiation speed It is 1000mm / s, and the processing time is 30s.

[0038] The ipa value of the carbon fiber after surface treatment and the oxygen concentration (O / C ratio) on the surface of the carbon fiber were measured, and the results are shown in Table 2.

[0039] Embed carbon fibers in epoxy resin to prepare test pieces. The inter...

Embodiment 2-8

[0042] Change the type and volume fraction of carbon fiber and resin, laser processing power, processing time, atmosphere gas, scanning speed, irradiation dose, irradiation time, fiber transmission speed, laser wavelength, composite molding conditions, and other conditions are the same as in Example 1. The surface treatment of carbon fibers, the specific conditions are shown in Table 1.

[0043] The ipa value and the surface oxygen concentration (O / C ratio) of the above-mentioned surface-treated carbon fibers were measured and calculated, and the results are shown in Table 2. The interfacial shear strength between carbon fiber and epoxy resin was measured according to the single fiber tensile segment crack test method, and the results are shown in Table 2.

[0044] The above-mentioned treated carbon fiber and resin were compounded and cured. After compounding, the composite material was sampled for tensile, bending and impact tests. The test results are shown in Table 2.

[0...

Embodiment 9

[0058] Get carbon fiber tow (HTS40, manufactured by Toho Corporation in Japan), and there is epoxy resin sizing agent on the surface of carbon fiber. Press the carbon fiber as figure 1 The laser irradiation is set as shown, and the laser irradiation treatment is carried out at room temperature and atmospheric pressure nitrogen atmosphere to obtain the carbon fiber tow after surface treatment. The irradiation conditions are: the wavelength of the laser used is 1064nm (Nd: YAG laser), the irradiation power is 5W, the laser beam focusing radius is 0.05mm, the fiber transmission speed is 0.5m / min, the irradiation dose is 0.05MGy, the laser irradiation speed It is 1000mm / s, and the processing time is 30s.

[0059] The ipa value of the carbon fiber after surface treatment and the oxygen concentration (O / C ratio) on the surface of the carbon fiber were measured, and the results are shown in Table 4.

[0060] Carbon fibers were embedded in polyamide 6 resin to prepare test pieces. ...

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Abstract

The invention discloses a carbon fiber surface treatment method. A carbon fiber is statically or dynamically placed below a laser generator; the laser generator irradiates the carbon fiber with laser,and the irradiation dose accepted by the carbon fiber is controlled according to the laser power and the irradiation time. The carbon fiber surface treatment method has the advantages of low cost, zero pollution and high mechanical property.

Description

technical field [0001] The invention relates to a carbon fiber surface modification treatment technology, which belongs to the technical field of carbon fiber manufacturing. Background technique [0002] Carbon fiber and its composite materials have a series of excellent properties such as high specific strength, high specific modulus, high temperature resistance, corrosion resistance, fatigue resistance, creep resistance, easy conduction, easy heat transfer, and small thermal expansion coefficient. They are used in aviation and aerospace , automobile industry, sporting goods, construction, civil engineering, construction, transportation and other fields. [0003] However, the surface of carbon fiber is inert. If it is used directly without surface treatment, the affinity between the carbon fiber and the matrix material in the composite material will be weak, and the load cannot be effectively transmitted between the matrix material and the carbon fiber, thus failing to obta...

Claims

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Application Information

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IPC IPC(8): D06M10/00C08L63/00C08L61/06C08L67/06C08L61/14C08K7/06D06M101/40
CPCC08K7/06D06M10/005D06M2101/40C08L63/00C08L61/06C08L67/06C08L61/14
Inventor 吴刚平朱宏李文君刘玉婷宋红艳吴良才
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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