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Cleaning method of polyacrylonitrile carbon fiber precursor drying and densifying equipment

A technology of polyacrylonitrile carbon fiber and cleaning method, which is applied in the direction of cleaning method using liquid, cleaning method using tools, cleaning method and utensils, etc., can solve the problem of poor cleaning effect, unsafe cleaning process, and appearance of densification equipment surface burrs and other problems, to achieve a good cleaning effect

Active Publication Date: 2021-06-25
山西钢科碳材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the above-mentioned cleaning method, the cleaning effect of the method (1) is not good, and the residual chemical reagents will also affect the performance of the original silk and carbon fiber; and the method (2), not only the cleaning effect is not good, but also the cleaning process is unsafe. It is also easy to damage the drying and densification equipment, such as causing burrs on the surface of the densification equipment, etc.

Method used

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  • Cleaning method of polyacrylonitrile carbon fiber precursor drying and densifying equipment
  • Cleaning method of polyacrylonitrile carbon fiber precursor drying and densifying equipment
  • Cleaning method of polyacrylonitrile carbon fiber precursor drying and densifying equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0052] The drying and densification hot roller cleaning method for polyacrylonitrile carbon fiber precursor production comprises the steps:

[0053] (1) Filter the loam soil with a water content of 3% and an organic matter content of 1% with a 200-mesh filter, and when the temperature of the hot roller drops to 45°C, apply the filtered dry soil to the surface of the wiped hot roller .

[0054] (2) Wipe the hot roller repeatedly with gauze to remove the deposits adhering to the hot roller.

[0055] (3) Soak the gauze in 30% alcohol solution at room temperature, and then repeatedly scrub the hot roller with the soaked gauze.

[0056] (4) Soak the gauze in ion-free water at 25°C, and then use the soaked gauze to repeatedly scrub the hot roller until it is clean.

Embodiment 2

[0058] The drying and densification hot roller cleaning method for polyacrylonitrile carbon fiber precursor production comprises the steps:

[0059] (1) Filter the clayey soil with a water content of 20% and an organic matter content of 10% with a 300-mesh filter, reduce the temperature of the hot roller to 50°C, and apply the filtered dry soil to the surface of the wiped hot roller .

[0060] (2) Wipe the hot roller repeatedly with gauze to remove the deposits adhering to the hot roller.

[0061] (3) Soak the gauze in 40% alcohol solution at room temperature, and then repeatedly scrub the hot roller with the soaked gauze.

[0062] (4) Soak the gauze in 30°C ion-free water, then repeatedly scrub the hot roller with the soaked gauze until it is clean.

Embodiment 3

[0064] The drying and densification hot roller cleaning method for polyacrylonitrile carbon fiber precursor production comprises the steps:

[0065] (1) Filter the loam soil with 10% water content and 5% organic matter content with a 100-mesh filter, reduce the temperature of the hot roll to 40°C, and apply the filtered dry soil to the surface of the hot roll to be wiped.

[0066] (2) Wipe the hot roller repeatedly with gauze to remove the deposits adhering to the hot roller.

[0067] (3) At room temperature, soak the gauze in 35% alcohol solution, and then repeatedly scrub the hot roller with the soaked gauze.

[0068] (4) Soak the gauze in 40°C ion-free water, then repeatedly scrub the hot roller with the soaked gauze until it is clean.

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Abstract

The invention provides a cleaning method of polyacrylonitrile carbon fiber precursor drying and densifying equipment. The cleaning method comprises the following steps: 1, smearing soil on the drying and densifying equipment; and 2, coating the soil with cloth and wiping the drying and densifying equipment to remove attachments on the surface of the drying and densifying equipment. According to the cleaning method of the polyacrylonitrile carbon fiber precursor drying and densifying equipment, the cleaning effect is good, the surface of the densifying equipment equipment is not damaged, and the performance of a precursor and a carbon fiber is not affected.

Description

technical field [0001] The application belongs to the technical field of polyacrylonitrile carbon fiber precursor preparation technology, and in particular relates to a cleaning method for polyacrylonitrile carbon fiber precursor drying and densification equipment. Background technique [0002] At present, polyacrylonitrile carbon fiber precursors are the prerequisite for the production of high-performance carbon fibers. In the production of carbon fibers, precursors account for 50% of the total cost. Poor quality of precursors and high production costs are the key to restricting the development of carbon fibers and their composite materials in my country. factor. The production process of polyacrylonitrile carbon fiber precursor includes spinning, coagulation bath, washing, hot drawing, oiling, drying and densification, steam drawing, relaxation heat setting, and winding. Among them, the oil agent used in the oiling process is mostly silicon-based oil agent, especially the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B7/00B08B1/00B08B3/08
CPCB08B7/00B08B3/08B08B1/143
Inventor 韩笑笑郝俊杰常春报刘纳新景延军吴惠平
Owner 山西钢科碳材料有限公司
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