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Continuous preparation method of activated carbon fiber cloth with high breaking strength and elongation at break

A technology of activated carbon fiber cloth and elongation at break, which is applied in the direction of heating/cooling fabrics, textiles and papermaking, fabric surface trimming, etc., and can solve the problems of poor breaking strength and elongation at break of activated carbon fiber cloth

Active Publication Date: 2010-03-03
SHANGHAI TIANXIANG TEXTILE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The first technical problem to be solved in the present invention is to provide a continuous preparation method of activated carbon fiber cloth with high breaking strength and elongation at break, and improve the bad shortcomings of activated carbon fiber cloth at break strength and elongation at break. The following technical solutions are realized:

Method used

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  • Continuous preparation method of activated carbon fiber cloth with high breaking strength and elongation at break
  • Continuous preparation method of activated carbon fiber cloth with high breaking strength and elongation at break
  • Continuous preparation method of activated carbon fiber cloth with high breaking strength and elongation at break

Examples

Experimental program
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Effect test

Embodiment 1

[0088] Pyron series polyacrylonitrile-based oxidized fibers produced by Zoltek in the United States are used, and 1 / 1 plain weave is woven into a cloth-like fabric after being spun into yarns. The content of oxidized fibers is 100% by weight, and the weight is 340 to 360g / m 2 .

[0089] The above-mentioned polyacrylonitrile-based oxidized fiber cloth is over-fed into the cloth from the feeding mechanism, and the over-feeding amount of the cloth is controlled (that is, the speed of entering the cloth>the speed of the cloth) to be 15%, and enters the heat treatment furnace through the feed port, and the temperature of the heat treatment furnace At 900°C, water vapor is introduced into the first to fourth areas of the heat treatment furnace, and carbon dioxide is introduced into the fourth area of ​​the heat treatment furnace. The weight ratio of water vapor / carbon dioxide is 10. Cloth outlet, the inlet and outlet of the heat treatment furnace are protected by carbon dioxide gas ...

Embodiment 2

[0092] The Panox series of polyacrylonitrile-based oxidized fibers produced by the British SGL Group are used, and after being spun into yarns, 1 / 1 plain weave is used to form cloth-like fabrics. The content of oxidized fibers is 100% by weight, and the weight is 340 to 360g / m 2 .

[0093] The above-mentioned polyacrylonitrile-based oxidized fiber cloth is overfed into the cloth from the feeding mechanism, and the overfeeding amount of the cloth is controlled (that is, the cloth feeding speed>the cloth outlet speed) to be 20%, and enters the heat treatment furnace through the feeding port, and the temperature of the heat treatment furnace is 20%. The temperature is 965°C, water vapor is introduced into the first to fourth areas of the heat treatment furnace, and carbon dioxide is introduced into the fourth area of ​​the heat treatment furnace. The weight ratio of water vapor / carbon dioxide is 10. Cloth outlet, the inlet and outlet of the heat treatment furnace are protected by...

Embodiment 3

[0096] The Panox series of polyacrylonitrile-based oxidized fibers produced by the British SGL Group are used, and after being spun into yarns, 1 / 1 plain weave is used to form cloth-like fabrics. The content of oxidized fibers is 100% by weight, and the weight is 340 to 360g / m 2 .

[0097] The above-mentioned polyacrylonitrile-based oxidized fiber cloth is over-fed into the cloth from the feeding mechanism, and the over-feeding amount of the cloth is controlled (that is, the speed of entering the cloth>the speed of the cloth) to be 30%, and enters the heat treatment furnace through the feed port, and the temperature of the heat treatment furnace The temperature is 985°C, water vapor is introduced into the first to fourth areas of the heat treatment furnace, and carbon dioxide is introduced into the fourth area of ​​the heat treatment furnace. The weight ratio of water vapor / carbon dioxide is 20. Cloth outlet, the inlet and outlet of the heat treatment furnace are protected by ...

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Abstract

The invention discloses a continuous preparation method of activated carbon fiber cloth with high breaking strength and elongation at break, which comprises the following steps: (a) providing polyacrylonitrile oxidized fiber cloth; (b) providing a heat treating furnace which comprises at least four reaction regions and is provided with a feeding mechanism and a discharging mechanism; (c) providingactivated gas vapor and carbon dioxide; and (d) enabling the polyacrylonitrile oxidized fiber cloth to carry out the carbon activating reaction. The invention is characterized in that the feeding mechanism and the discharging mechanism are used for controlling the meridional overfeeding amount of the polyacrylonitrile oxidized fiber cloth in the carbon activating process to be 15-40%.

Description

technical field [0001] The invention relates to an improved continuous preparation method of activated carbon fiber cloth, in particular, the invention relates to a continuous preparation method of activated carbon fiber cloth with high breaking strength and elongation at break. Background technique [0002] Activated carbon is a very fine carbon particle with a large surface area, and there are even smaller pores in the carbon particle-capillary. This kind of capillary has a strong adsorption capacity, and due to the large surface area of ​​the carbon particles, it can fully contact with the gas (impurity). When these gases (impurities) come into contact with the capillary, they are adsorbed and play a role in purification. Therefore, activated carbon is widely used in various aspects such as chemical protection and environmental protection. The traditional form of activated carbon is mainly powder or granules, and its application is often limited by its form. Therefore,...

Claims

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Application Information

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IPC IPC(8): D06C7/04
Inventor 戈国忠
Owner SHANGHAI TIANXIANG TEXTILE TECH
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