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Carbon fiber surface treatment method and treatment device

A technology of surface treatment and treatment device, applied in the direction of anodizing, cells, plating tanks, etc., can solve the problems of poor washing effect, easy damage to carbon filaments, high water consumption, etc., to improve the interlayer shear strength, easy to wash The effect of clean, less water consumption

Inactive Publication Date: 2014-12-03
ZHONGFU SHENYING CARBON FIBER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the traditional washing tanks have a "one" structure, which is large in size, consumes a lot of water, and the washing effect is not good.
Before sizing, the carbon fiber needs to be dried. The traditional drying equipment is a box-type drying furnace structure. The high wind speed is easy to damage the carbon fiber, and the energy consumption is high.

Method used

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  • Carbon fiber surface treatment method and treatment device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1, a kind of carbon fiber surface treatment method, its steps are as follows:

[0021] (1) Pour the ammonium bicarbonate solution with a mass concentration of 2% into the electrolytic cell, pass the dry-sprayed wet-spun carbon fiber tow after high-temperature carbonization through the electrolytic cell, and perform electrolysis at room temperature. The electrolytic treatment time is 30S, and the electrolytic power 10C / g;

[0022] (2) The carbon fiber tow after electrolysis enters the washing tank and is washed with deionized water. The washing temperature is 20°C and the washing time is 160S;

[0023] (3) The washed carbon fiber tow is dried by contact drying, which is heated by a steam drying cylinder. The surface temperature of the drying cylinder is 120°C, the time is 80S, and the steam pressure is 0.2MPa.

Embodiment 2

[0024] Embodiment 2, a kind of carbon fiber surface treatment method, its steps are as follows:

[0025] (1) Pour the ammonium bicarbonate solution with a mass concentration of 2% into the electrolytic cell, pass the dry-sprayed wet-spun carbon fiber tow after high-temperature carbonization through the electrolytic cell, and perform electrolysis at room temperature. The electrolytic treatment time is 30S, and the electrolytic power 5C / g;

[0026] (2) The carbon fiber tow after electrolysis enters the washing tank and is washed with deionized water. The washing temperature is 30°C and the washing time is 150S;

[0027] (3) The washed carbon fiber tow is dried by a contact drying method, which is heated by a steam drying cylinder. The surface temperature of the drying cylinder is 130°C, the time is 100S, and the steam pressure is 0.2MPa.

Embodiment 3

[0028] Embodiment 3, a kind of carbon fiber surface treatment method, its steps are as follows:

[0029] (1) Pour the ammonium bicarbonate solution with a mass concentration of 2% into the electrolytic cell, pass the dry-sprayed wet-spun carbon fiber tow after high-temperature carbonization through the electrolytic cell, and perform electrolysis at room temperature. The electrolytic treatment time is 30S, and the electrolytic power 20C / g;

[0030] (2) The carbon fiber tow after electrolysis enters the washing tank and is washed with deionized water. The washing temperature is 40°C and the washing time is 140S;

[0031] (3) The washed carbon fiber tow is dried by a contact drying method, which is heated by a steam drying cylinder. The surface temperature of the drying cylinder is 130°C, the time is 90S, and the steam pressure is 0.2MPa.

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Abstract

The invention relates to a carbon fiber surface treatment method and treatment device. The method uses an anode electrolytic oxidation process. The electrolyte used by the method is easy to clean, and has fewer residues after being dried; the method has the advantages of short treatment time and small electric quantity; and after the carbon fiber is treated, the ILSS value can be enhanced by 25%, and no tensile strength is lost. The method adopts a half-contact electrolysis bath, and the anode material can not generate the corrosion phenomenon, thereby reducing the contact between the filament bundle and the guide roller and reducing the damage of the filament bundle. The method adopts a two-stage water washing device with a sprayer to perform water washing, and has the characteristics of low water consumption and fewer electrolyte residues. The drying adopts a contact-type drier which has the characteristics of short time and small space.

Description

technical field [0001] The invention relates to a carbon fiber surface treatment method, in particular to a carbon fiber anodic oxidation surface treatment method, and also relates to the above-mentioned surface treatment device. Background technique [0002] Due to the different spinning forming process, the dry-jet wet-spinning raw silk has a large difference in surface from the wet-spinning raw silk, showing the characteristics of smooth surface and no groove, and the surface of the obtained carbon fiber is also very smooth, resulting in When compounding, the mechanical connection effect is poor, the interface bonding force is poor, and the corresponding interlayer shear strength is low. Therefore, compared with wet-spun carbon fibers, dry-jet wet-spun carbon fibers require more surface treatment. Anodic electrochemical oxidation is currently a relatively mature surface treatment process. After electrochemical oxidation treatment, the surface of the fiber is firstly etch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/02C25D17/02C25D21/08C25D21/00
Inventor 郭鹏宗连峰席玉松卢明
Owner ZHONGFU SHENYING CARBON FIBER
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