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Active carbon fiber and preparation method thereof

A technology of activated carbon fibers and composite nanofibers, applied in fiber treatment, chemical instruments and methods, and other chemical processes, can solve the problems of low surface energy of activated carbon fibers, low strength of activated carbon fibers, and complicated preparation methods, etc., and achieve good fiber Uniformity in diameter and pore size, good regeneration performance, and simple preparation method

Inactive Publication Date: 2013-07-31
LIYANG ZHUXI ACTIVATED CARBON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, the production technology of activated carbon fiber has developed rapidly, and it also has related applications in water pollution control, biochemical reaction, food fermentation, etc. as a carrier of microorganisms, but the preparation method of activated carbon fiber in the prior art is complicated, and through this The surface energy of the activated carbon fibers prepared by this method is still not high, and further improvement is needed; at the same time, the activated carbon fibers prepared by this method have low strength and poor impact resistance, and are not suitable for the treatment of large amounts of sewage.
[0005] Based on some shortcomings of the current activated carbon fiber, there is no report on its application as a biofilm carrier in water treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Dissolve 1.3 g of bisphenol AF-aniline benzoxazine monomer (reagent model P8423) and 0.1 g of benzylamine in 25.3 g of N,N-dimethylformamide in a stirred tank at room temperature , The stirring speed is 100 rpm, and the stirring time is 10 minutes to obtain a benzoxazine solution with a mass concentration of 4.1%;

[0028] (2) At room temperature, add 2.1g of nylon 6 (molecular weight 70,000) to the benzoxazine solution, stirring speed of 500rpm, stirring time of 3h, and mixing uniformly to obtain a solution with a blended mass concentration of 5.9% ;

[0029] (3) Under the condition of room temperature and relative humidity of 30%, input the obtained mixed solution to the spinneret of the electrospinning equipment at a flow rate of 0.3mL / h, and at the same time connect the spinneret to a 10kV power supply for electrostatic Spinning to prepare benzoxazine composite nanofiber membrane, the receiving device is a copper mesh, and the distance between the receiving device a...

Embodiment 2

[0034] (1) Dissolve 8.1g naphthol-aniline benzoxazine monomer (reagent model P8417) and 1.4g imidazole in 67.2g tetrahydrofuran in a stirred tank at room temperature. The stirring speed is 150rpm and the stirring time is 15min , Obtain a benzoxazine solution with a mass concentration of 12.4%;

[0035] (2) At room temperature, add 17.3g of polyacrylonitrile (molecular weight: 90,000) to the benzoxazine solution, the stirring speed is 600rpm, the stirring time is 5h, and the mixing is uniform to obtain a blend with a mass concentration of 18.4% Solution

[0036] (3) Under the condition of room temperature and relative humidity of 45%, the obtained mixed spinning solution is input to the spinneret of the electrospinning equipment at a flow rate of 1mL / h, and the spinneret is connected to the 18kV power supply for electrospinning. The benzoxazine composite nanofiber membrane is prepared from silk, the receiving device is aluminum foil, and the distance between the receiving device an...

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Abstract

The invention discloses an active carbon fiber and a preparation method thereof. The method comprises the following steps: obtaining a benzoxazine solution; obtaining a mixed solution of blending polymers; obtaining a composite nanofiber; and preparing the active carbon fiber. The preparation method is simple, the kinds and the application amounts of reaction reagents required by the method are less, and the cost is low. The active carbon fiber prepared through the method has the advantages of extremely-high specific surface area, good fiber diameter and aperture uniformity, excellent mechanical performances and excellent heat stability.

Description

Technical field [0001] The invention relates to an activated carbon fiber and a preparation method thereof. Background technique [0002] Activated carbon fiber is a new type of adsorption material prepared by combining carbon fiber and activated carbon technology. It has ultra-high specific surface area, micro-mesoporous hierarchical structure, small pore size distribution, large adsorption capacity, fast adsorption and desorption speed, and easy regeneration. Features. At present, the raw materials of activated carbon fiber precursors are generally pitch, viscose fiber, polyacrylonitrile and phenolic resin. Compared with other activated carbon fibers, phenolic based activated carbon fiber has higher carbonization yield, specific surface area and electrical conductivity. Received extensive attention. Activated carbon fiber is mainly used for environmental purification. It is mostly used as an excellent adsorbent for air purification. It can absorb hydrogen sulfide in gas and r...

Claims

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Application Information

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IPC IPC(8): D01F9/20D01D5/00B01J20/20C02F1/28C02F3/00
Inventor 陈静葛华林
Owner LIYANG ZHUXI ACTIVATED CARBON
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