Method for manufacturing high-strength viscose-based active carbon fiber fabrics

An activated carbon fiber cloth and viscose-based technology, which is applied in the manufacturing field of high-strength viscose-based activated carbon fiber cloth, can solve the problems of short service life, poor mechanical strength, and unsatisfactory performance, and achieve low manufacturing cost, easy process amplification, easy to control effects

Active Publication Date: 2010-10-20
DALIAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the general mechanical strength of the activated carbon fiber cloth prepared by the above-mentioned method is relatively poor, and the protective products such as fire protection, anti-virus and chemical protection such as anti-virus clothing, gas masks, gas caps and decorative products have low strength and short service life. The needs of practical applications, let alone compete with similar foreign products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take 30 meters of bonded fiber plain weave cloth woven by filaments, wash and remove impurities such as oil stains, colloids, and dust on the surface, and then dry at 120°C; use HCl, NH 4 Cl, ZnCl 2 Prepare the impregnating solution with a total concentration of 10% (wt%) for the flame retardant, wherein HCl:NH 4 Cl: ZnCl 2 1:4:1; and add FeCl equivalent to 5% (wt%) of impregnating solution 3 , CuCl 2 , MnCl 2 mixture, where FeCl 3 : CuCl 2 : MnCl 2 The ratio is 1:1:1; the viscose fiber cloth is soaked in the soaking solution for 20 minutes, squeezed and dehydrated, dried at 120°C, pre-oxidized at 200°C, and stretched at the same time to make the cloth flat. The treated cloth is directly sent into a low-temperature carbonization furnace for low-temperature carbonization under the protection of nitrogen. The final temperature of carbonization is controlled at 380°C, and the residence time is 45 minutes. % (v%); Finally, send the carbonized cloth into the high-tem...

Embodiment 2

[0021] Take 30 meters of bonded fiber twill fabric woven by filaments, wash and remove impurities such as oil stains, colloids, and dust on the surface, and then dry at 120°C; use KCl, NH 4 Cl, ZnCl 2 Prepare the impregnating solution with a total concentration of 10% (wt%) for the flame retardant, wherein KCl:NH 4 Cl: ZnCl 2 1:10:3; and add AlCl equivalent to 5% (wt%) of impregnating solution 3 、CoCl 2 , FeCl 3 mixture, where AlCl 3 : CoCl 2 : FeCl 3 The ratio is 3:1:1; the viscose cloth is soaked in the soaking solution for 20 minutes, dehydrated by extrusion, dried at 120°C, pre-oxidized at 220°C, and stretched at the same time to make the cloth flat. The treated cloth is directly sent to a low-temperature carbonization furnace for low-temperature carbonization under the protection of nitrogen. The final temperature of carbonization is controlled at 380 ° C, the residence time is 40 minutes, and the draft is kept during the carbonization process. The shrinkage of the...

Embodiment 3

[0024] Take 30 meters of bonded fiber twill fabric woven by filaments, wash and remove impurities such as oil stains, colloids, and dust on the surface, and then dry at 120°C; 3 BO 3 、Na 3 BO 3 Prepare the dipping solution with a total concentration of 15% (wt%) for the flame retardant, where H 3 BO 3 :Na 3 BO 3 1:3; and add NiSO equivalent to 6% (wt%) of impregnating solution 4 、CoSO 4 , AlCl 3 mixture, where NiSO 4 :CoSO 4 :AlCl 3The ratio is 1:2:4; the viscose fiber cloth is soaked in the soaking solution for 25 minutes, dehydrated by extrusion, dried at 120°C, pre-oxidized at 180°C, and stretched at the same time to make the cloth flat. The treated cloth is directly sent to a low-temperature carbonization furnace for low-temperature carbonization under the protection of nitrogen. The final temperature of carbonization is controlled at 380 ° C, the residence time is 30 minutes, and the draft is kept during the carbonization process. The shrinkage of the cloth is ...

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Abstract

The invention discloses a method for manufacturing high-strength viscose-based active carbon fiber fabrics. In the method, viscose fiber fabrics woven by using long viscose fibers as a precursor are used as raw materials; according to the composition and structural characteristics of the viscose fiber fabrics, a phosphorus-free chemical reagent is used as a fire retardant and graphitizer which can improve the mechanical strength of the active carbon fiber fabric is added, and thus the high-strength viscose-based active carbon fiber fabrics with a developed microporous structure are manufactured by continuous low-and high-temperature carbonization, activation, drawing and other processes. In the invention, the production process, which is simple and easy to control, allows for continuous production and can be optimized according to actual application requirements, is adopted to manufacture the high-strength viscose-based active carbon fiber fabric products of different specifications. The method can be widely used for manufacturing products including protective products, such as fireproof, antitoxin and antichemical products, decorative products and the like.

Description

technical field [0001] The invention belongs to the technical field of carbon materials, and relates to a method for manufacturing an activated carbon fiber material, in particular to a method for manufacturing a high-strength viscose-based activated carbon fiber cloth. Background technique [0002] Activated carbon fiber is a new type of porous adsorption functional material and environmental protection engineering material developed in the early 1970s. It is a kind of filamentary or fibrous activated carbon with developed and unique micropores and surface structure, which is prepared from natural or artificial fibers such as bonding fibers and polymer fibers through low-temperature carbonization and high-temperature activation. Compared with traditional granular activated carbon, activated carbon fiber has a large effective specific surface area, high adsorption capacity, especially for low-concentration gases, and has excellent properties such as good adsorption capacity....

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D03D13/00D03D15/00D06B3/10D06B15/02D06C3/00D06M11/13D06M11/155D06M11/45D06M101/06D03D15/225
Inventor 王同华周健周茅峰丁炳华
Owner DALIAN UNIV OF TECH
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