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A method for preparing porous functional carbon fiber clusters from waste cotton textiles

A carbon fiber and textile technology, which is applied in the field of carbon fiber preparation by using waste cotton textiles, can solve the problems of high equipment requirements, difficult to effectively combine, and insufficient attention to fiber bundle structure, etc., and achieves the effect of efficient utilization

Active Publication Date: 2015-12-02
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high temperature and high pressure conditions of this method have high requirements on the equipment. At the same time, this method does not pay enough attention to the fiber bundle structure of the cotton textile raw material itself. The carbon material prepared has a spherical structure, and the surface of the product is smooth, which is not easy to effectively combine with other materials. , poor functionality, narrow application fields

Method used

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  • A method for preparing porous functional carbon fiber clusters from waste cotton textiles
  • A method for preparing porous functional carbon fiber clusters from waste cotton textiles
  • A method for preparing porous functional carbon fiber clusters from waste cotton textiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Soak the waste cotton textiles that have been simply crushed in 10wt% KH-550 solution at room temperature for 10 minutes, drain the solution, then soak it in 10wt% ammonium chloride solution for 10 minutes, drain the solution, and finally place it at room temperature for 30wt % zinc chloride solution for 16 hours, drain the solution and dry.

[0030] Pre-oxidize the dried waste cotton textiles at 150°C for 20 minutes, then raise the temperature to 250°C for 20 minutes; then pass in nitrogen gas, heat up to 350°C at a speed of 10°C / min, keep warm for carbonization for 40 minutes, and then heat up to 550°C , insulation carbonization 40min.

[0031] First pickle the black product obtained with concentrated hydrochloric acid at 90°C with a volume ratio of 1:10 to remove zinc chloride remaining on the surface of the product, then wash with distilled water at 100°C until the pH value is about 7, dry and sieve , to obtain porous functional carbon fiber clusters.

Embodiment 2

[0033] Soak the waste cotton textiles that have been simply crushed in 10wt% KH-550 solution at room temperature for 10 minutes, drain the solution, then soak it in 10wt% ammonium chloride solution for 10 minutes, drain the solution, and finally place it at room temperature for 30wt % zinc chloride solution for 16 hours, drain the solution and dry.

[0034] Pre-oxidize the dried waste cotton textiles at 150°C for 30 minutes, then raise the temperature to 250°C for 30 minutes; then pass nitrogen gas, heat up to 400°C at a speed of 10°C / min, keep warm for 90 minutes, and then heat up to 650°C , insulation carbonization 35min.

[0035] First pickle the black product obtained with concentrated hydrochloric acid at 90°C with a volume ratio of 1:10 to remove zinc chloride remaining on the surface of the product, then wash with distilled water at 100°C until the pH value is about 7, dry and sieve , to obtain porous functional carbon fiber clusters.

[0036] The surface morphology o...

Embodiment 3

[0040] Soak the waste cotton textiles that have been simply crushed in 10wt% KH-550 solution at room temperature for 10 minutes, drain the solution, then soak it in 10wt% ammonium chloride solution for 10 minutes, drain the solution, and finally place it in 50wt% KH-550 solution at room temperature % zinc chloride solution for 24 hours, drain the solution and dry.

[0041] Pre-oxidize the dried waste cotton textiles at 200°C for 40 minutes, then raise the temperature to 300°C for 30 minutes; then pass in nitrogen, heat up to 450°C at a rate of 10°C / min, keep warm for 60 minutes, and then heat up to 950°C , insulation carbonization 40min.

[0042] First pickle the black product obtained with concentrated hydrochloric acid at 90°C with a volume ratio of 1:10 to remove zinc chloride remaining on the surface of the product, then wash with distilled water at 100°C until the pH value is about 7, dry and sieve , to obtain porous functional carbon fiber clusters.

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Abstract

The invention relates to a method for preparing a porous functional carbon fiber cluster from waste cotton textiles. The method comprises the following steps of sequentially carrying out immersion treatment on waste cotton textiles with a KH-550 solution, an ammonium chloride solution and a zinc chloride solution, firstly pre-oxidizing at 150-300 DEG C and then isolating from the air, heating up to 350-950 DEG C and carrying out carbonization treatment to convert the textiles into the porous functional carbon fiber cluster of which the surface contains functional groups. The carbon fiber cluster prepared by the method disclosed by the invention has the advantages of stable surface physical and chemical properties and can maintain the advantages of fiber morphology as well as has highly active functional groups and holes. The carbon fiber cluster can be used as an adsorbent material to achieve high-value recycling of waste cotton textiles.

Description

technical field [0001] The invention relates to the recycling of waste cotton textiles, in particular to a method for preparing carbon fibers from waste cotton textiles. Background technique [0002] my country is a big textile country, with a total output value of the textile industry exceeding 5 trillion yuan, and a total textile processing volume of more than 40 million tons, accounting for more than 50% of the world's total. Among them, cotton fiber is the most important textile raw material. Textiles will become waste products after several years of use. If these waste textiles are incinerated or discarded, the harmful gases and refractory substances produced will cause serious pollution to the environment. Therefore, the recycling of waste textiles is related to the protection of the natural environment on which human beings depend. [0003] The current waste cotton textile treatment methods mainly include mechanical and chemical methods. The mechanical method is to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/02
Inventor 王淑花许巧丽武琳婷李芬高立斌戴晋明
Owner TAIYUAN UNIV OF TECH
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