Preparation method of phenolic resin matrix nano activated carbon fiber material

A technology of activated carbon fiber and phenolic resin, which is applied in the direction of carbon fiber, fiber treatment, spinning solution preparation, etc. It can solve the problems of poor spinnability and limited solvent types, and achieve the effects of low price, good dimensional stability, and wide sources

Inactive Publication Date: 2012-09-19
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of phenolic resin-based nano-activated carbon fiber material, to solve the problem that benzoxazine monomer solidifies at a lower melting temperature, and it is difficult to prepare carbon fibers with uniform structure due to the limitation of solvent types and poor spinnability technical issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Dissolve 1.3g of bisphenol AF-aniline type benzoxazine monomer (reagent model P8423) and 0.1g of benzylamine in 25.3g of N,N-dimethylformamide at room temperature , the stirring speed is 100rpm, and the stirring time is 10min to obtain a benzoxazine solution with a mass concentration of 4.1%;

[0025] (2) At room temperature, 2.1g of nylon 6 (molecular weight: 70,000) was added to the benzoxazine solution, the stirring speed was 500rpm, the stirring time was 3h, and the mixture was uniformly mixed to obtain a solution with a mass concentration of the blended material of 5.9%. ;

[0026] (3) Under the conditions of room temperature and relative humidity of 30%, the mixed solution obtained is input to the spinneret of the electrospinning equipment at a flow rate of 0.3mL / h, and the spinneret is connected to a 10kV power supply for electrostatic The benzoxazine composite nanofiber membrane is prepared by spinning, the receiving device is a copper mesh, and the distanc...

Embodiment 2

[0031](1) Dissolve 8.1g of naphthol-aniline type benzoxazine monomer (reagent model P8417) and 1.4g of imidazole in 67.2g of tetrahydrofuran in a stirred tank at room temperature, the stirring speed is 150rpm, and the stirring time is 15min , to obtain a mass concentration of 12.4% benzoxazine solution;

[0032] (2) At room temperature, 17.3g of polyacrylonitrile (molecular weight: 90,000) was added to the benzoxazine solution, the stirring speed was 600rpm, and the stirring time was 5h. solution;

[0033] (3) Under the conditions of room temperature and relative humidity of 45%, the resulting blended solution was input to the spinneret of the electrospinning equipment at a flow rate of 1mL / h, and the spinneret was connected to an 18kV power supply for electrospinning Silk preparation of benzoxazine composite nanofiber membrane, the receiving device is aluminum foil, the distance between the receiving device and the spinneret is 15cm;

[0034] (4) Put the obtained benzoxazin...

Embodiment 3

[0038] (1) At room temperature, in a stirred tank, 14.7g bisphenol A-aniline type benzoxazine monomer (reagent model P8427) and 2.7g oxalic acid are dissolved in 64.2g methylene chloride, and the stirring speed is 200rpm, stirring The time is 20min, and a benzoxazine solution with a mass concentration of 16.1% is obtained;

[0039] (2) At room temperature, 22.3g of polyimide (molecular weight: 60,000) was added to the benzoxazine solution, the stirring speed was 800rpm, the stirring time was 6h, and the mixture was evenly mixed to obtain a blend with a mass concentration of 21.5%. solution;

[0040] (3) Under the conditions of room temperature and relative humidity of 50%, the mixed solution obtained is input to the spinneret of the electrospinning equipment at a flow rate of 1.5mL / h, and the spinneret is connected to a 20kV power supply for electrostatic Prepare benzoxazine composite nanofiber membrane by spinning, the receiving device is aluminum foil, and the distance betw...

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Abstract

The invention provides a preparation method of a phenolic resin matrix nano activated carbon fiber material. The preparation method is characterized in that the method specifically comprises the steps of: dissolving benzoxazine monomers and curing catalysts in solvent, adding blending polymers for electrostatic spinning, putting the obtained benzoxazine composite nano fiber membrane in a drying oven for curing, placing the cured benzoxazine composite nano fiber membrane in potassium hydroxide solution for soaking, taking out the benzoxazine composite nano fiber membrane and drying the benzoxazine composite nano fiber membrane in a drying oven to obtain the pretreated benzoxazine composite nano fiber membrane; and placing the pretreated benzoxazine composite nano fiber membrane in a vacuum tube furnace, heating for carbonization under the protection of nitrogen, cooling to room temperature after the carbonization process is ended, acidizing and drying to obtain the phenolic resin matrix nano activated carbon fiber material. The preparation method has a wide application prospect in fields such as activated adsorption, high-temperature catalysis, energy storage and hydrogen storage.

Description

technical field [0001] The invention relates to a preparation method of a phenolic resin-based nano-active carbon fiber material, which belongs to the technical field of nano-functional materials. 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 multi-level 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, among which phenolic activated carbon fiber has higher carbonization yield, specific surface area and electrical conductivity than other activated carbon fibers received widespread attention. Patent CN101092761 discloses a method for preparing traditional phenolic resin-based carbo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D1/02D04H1/728D04H1/4382D06C7/04D06M11/13D06M101/40
Inventor 丁彬任韬斯阳俞建勇
Owner DONGHUA UNIV
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