Method for preparing magnetic benzoxazinyl carbon nanofiber material

A benzoxazine-based carbon nanofiber technology, which is applied in the chemical characteristics of fibers, rayon manufacturing, textiles and papermaking, etc., can solve the problems of small size of benzoxazine-based carbon nanofibers, secondary environmental pollution, fiber material Waste and other problems, to achieve the effects of mild and easy control of reaction conditions, good magnetic properties, and simple preparation process

Inactive Publication Date: 2012-09-05
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the actual processing process, due to the characteristics of small volume and easy dispersion of benzoxazine-based carbon nanofibers, it is difficult to centrally recycle them after use, which not only causes waste of fiber materials, but also creates secondary pollution to the environment. Pollution
At present, there is no public patent technology related to the adsorption of magnetic carbon fiber materials for water pollutants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) At room temperature, 1.2g naphthol-aniline type benzoxazine monomer (reagent model P8417) and 0.1g imidazole are dissolved in the stirred tank that 62.5gN, N-dimethylformamide are housed, stir The rotational speed was 50 rpm, and the stirring time was 5 min to obtain a benzoxazine solution with a mass concentration of 1.8%.

[0029] (2) At room temperature, add 4.1g of polyacrylonitrile (molecular weight: 90,000) into the benzoxazine solution and stir to mix, the stirring speed is 600rpm, and the stirring time is 1h to obtain a solution with a mass concentration of the blended polymer of 5.7% ;

[0030] (3) At room temperature, add 0.18 g of iron acetylacetonate and stir to mix, the stirring speed is 500 rpm, and the stirring time is 4 hours to obtain a mixed solution;

[0031] (4) Under the conditions of room temperature and relative humidity of 25%, the obtained mixed solution was input to the spinneret of the electrospinning equipment at a flow rate of 0.1mL / h, ...

Embodiment 2

[0036] (1) At room temperature, 4.6g phenol-2,6-difluoroaniline type benzoxazine monomer (reagent model P8419) and 0.6g adipic acid are dissolved in a stirred tank with 94.2g tetrahydrofuran, stirred The rotating speed is 100rpm, the stirring time is 10min, and a benzoxazine solution with a mass concentration of 5.4% is obtained;

[0037] (2) At room temperature, 9.3g polystyrene (molecular weight: 40,000) was added to the benzoxazine solution and stirred, the stirring speed was 800rpm, and the stirring time was 1h to obtain a solution with a mass concentration of the blended polymer of 8.4%. ;

[0038] (3) At room temperature, add 0.92 g of ferric oxalate and stir to mix, the stirring speed is 700 rpm, and the stirring time is 5 hours to obtain a mixed solution;

[0039] (4) Under the conditions of room temperature and relative humidity of 40%, the obtained mixed solution was input to the spinneret of the electrospinning equipment at a flow rate of 0.5mL / h, and the spinneret...

Embodiment 3

[0043] (1) At room temperature, 8.1g bisphenol AF-m-trifluorotoluidine type benzoxazine monomer (reagent model P8422) and 1.2g benzylamine are dissolved in a stirred tank where 67.7g dichloromethane is housed, The stirring speed is 150rpm, and the stirring time is 10min to obtain a benzoxazine solution with a mass concentration of 11.4%.

[0044] (2) At room temperature, 16.3g of polyetherimide (molecular weight: 60,000) was added to the benzoxazine solution and stirred and mixed, the stirring speed was 800rpm, and the stirring time was 2h to obtain a blended polymer with a mass concentration of 18.4%. The solution;

[0045] (3) At room temperature, add 1.8 g of ferric sulfate hydrate and stir and mix, the stirring speed is 800 rpm, and the stirring time is 7 hours to obtain a mixed solution;

[0046] (4) 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 r...

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Abstract

The invention provides a method for preparing a magnetic benzoxazinyl carbon nanofiber material. The method is characterized by comprising the following specific steps of: dissolving a benzoxazinyl monomer and a solid catalyst in a solvent to obtain a benzoxazinyl solution; adding a blending polymer and an iron-containing compound; carrying out electrostatic spinning and solidification treatment, placing the solidified benzoxazinyl composite nanometer fiber membrane in a potassium hydroxide solution to soak, taking out the solid benzoxazinyl composite nanometer fiber membrane and drying in a vacuum drying box to obtain a pretreated solid benzoxazinyl composite nanometer fiber membrane; placing the pretreated solid benzoxazinyl composite nanometer fiber membrane in a vacuum tube type furnace, heating to carry out carbonization treatment under the protection of nitrogen, cooling down to room temperature after finishing a carbonization process, carrying out acidizing treatment, and drying in the vacuum drying box, thereby obtaining the magnetic benzoxazinyl carbon nanofiber material. According to the method for preparing the magnetic benzoxazinyl carbon nanofiber material, magnetism is endowed to the material based on excellent performances of a carbon fiber so that the method has wider application prospect in the fields, such as solvent recovery, water treatment, gasoline trapping and the like.

Description

technical field [0001] The invention relates to a preparation method of a magnetic benzoxazine-based carbon nanofiber material, belonging to the technical field of functional nanometer materials. Background technique [0002] In recent years, the potential application value of activated carbon nanofibers in important fields such as environment and energy has attracted more and more attention due to their ultra-high specific surface area, controllable micro-mesoporous structure and good physical properties. Compared with other activated carbon fibers, benzoxazine has the advantages of higher carbonization yield, specific surface area and electrical conductivity. As a new type of phenolic material, its special ring-opening polymerization mechanism can effectively improve the traditional phenolic resin condensation polymerization The disadvantage of poor controllability, and the flexibility of molecular structure design can realize the effective control of its physical properti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/24D01F1/10D01F11/12
Inventor 丁彬任韬斯阳俞建勇
Owner DONGHUA UNIV
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