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Active carbon fiber and method for preparing active carbon fiber from humic acid or humate

A technology of activated carbon fiber and humate, which is applied in the field of fiber and can solve the problems of preparing fiber

Pending Publication Date: 2022-07-22
承德石油高等专科学校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to propose an activated carbon fiber and a method for preparing activated carbon fiber using humic acid or humate, which can convert humic acid or humate into activated carbon fiber, which solves the problem that cannot be achieved in the prior art. The problem of using humic acid and humate to prepare fiber, and enriching the types of products prepared using humic acid and humate as raw materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) 120g of weathered coal humic acid, 840g of deionized water and 12g of potassium hydroxide were mixed at room temperature, and a mixture was obtained by stirring. The remaining liquid after the insoluble matter was dried at a constant temperature of 93 °C to obtain 25 g of water-soluble humic acid;

[0035] (2) adding 25g of water-soluble humic acid obtained in step (1) to 520g of the polyvinyl alcohol aqueous solution with a mass concentration of 5% at room temperature, stirring at room temperature to obtain a mixed solution;

[0036] (3) evaporating the water in the mixed solution in the step (2) at a constant temperature of 80 °C, so that the content of water in the mixed solution is reduced by 80 wt% to obtain a spinning solution;

[0037] (4) pouring the spinning solution obtained in step (3) into the spinning spinneret, at room temperature and under a pressure of 0.8 MPa, the spinning solution is sprayed into a filament through the spinneret hole in the spinnin...

Embodiment 2

[0042] (1) Mix 100 g of potassium humate and 1000 g of deionized water at room temperature, and stir to obtain a mixed solution. After the mixed solution is allowed to stand for 3 hours, centrifuge at 500 r / min for 25 min to remove insoluble matter. Dry at a constant temperature of 95°C to obtain 65g of water-soluble potassium humate;

[0043] (2) adding the 65g water-soluble potassium humate obtained in step (1) to 1950g of the polyvinyl alcohol aqueous solution with a mass concentration of 4% at room temperature, and stirring at room temperature to obtain a mixed solution;

[0044] (3) evaporating the water in the mixed solution in the step (2) at a constant temperature of 90 °C, so that the content of water in the mixed solution is reduced by 60 wt % to obtain a spinning solution;

[0045] (4) pouring the spinning solution obtained in step (3) into the spinning spinneret, at room temperature and under a pressure of 0.4MPa, the spinning solution is sprayed into a filament th...

Embodiment 3

[0050] (1) Mix 100 g of sodium humate and 900 g of deionized water at room temperature, and stir to obtain a mixed solution. After the mixed solution is allowed to stand for 0.5 h, centrifuge at 500 r / min for 15 min to remove insoluble matter. Dry at a constant temperature of 90°C to obtain 55g of water-soluble sodium humate;

[0051] (2) 55g of water-soluble sodium humate obtained in step (1) was added to 1100g of the polyvinyl alcohol aqueous solution with a mass concentration of 5% at room temperature, and stirred at room temperature to obtain a mixed solution;

[0052] (3) evaporating the water in the mixed solution in the step (2) at a constant temperature of 80°C, so that the water content in the mixed solution is reduced by 60 wt % to obtain a spinning solution;

[0053] (4) pouring the spinning solution obtained in step (3) into the spinning spinneret, at room temperature and under a pressure of 0.2MPa, the spinning solution is sprayed into a filament through the spinn...

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Abstract

The invention discloses an active carbon fiber and a method for preparing the active carbon fiber from humic acid or humate, and the method comprises the following steps: (1) mixing the humic acid or humate with water and inorganic base, removing insoluble substances in the mixed solution, and drying the residual liquid; (2) mixing water-soluble humic acid or humate with a polyvinyl alcohol aqueous solution, and evaporating part of water; (3) the spinning solution is sprayed into filaments through spinneret orifices in a spinning spray barrel, and the filaments are collected through a rotary winding drum which is located under the spinneret orifices and provided with copper foil attached to the surface; (4) taking down the fiber precursor and the copper foil from the winding drum, and heating to remove part of moisture in the fiber precursor; (5) transferring the obtained fiber precursor and the copper foil into a tubular furnace, carrying out carbonization treatment in a nitrogen atmosphere, immersing the copper foil attached with the fiber into hydrochloric acid, stirring to separate out the copper foil, and then drying to obtain carbonized fiber; and (6) transferring the carbonized fiber into a tubular furnace, heating in a nitrogen atmosphere, and introducing water vapor.

Description

technical field [0001] The invention belongs to the field of fibers, and in particular relates to an activated carbon fiber and a method for preparing the activated carbon fiber by using humic acid or humate. Background technique [0002] Humic acid is a natural macromolecular organic matter that is complexly transformed from the remains of animals and plants. It is abundant in reserves and is an important industrial raw material. Humic acid can be processed to obtain humic acid salts (such as potassium humate, etc.), which can be widely used in agriculture, medicine, etc. , environmental protection and other fields. The macromolecular skeleton of humic acid and its salts gives it the potential to produce fibers, but related production technologies need to be invented and enriched, which limits the application of humic acid and its salts to a certain extent. At present, the methods for industrial production of fibers mainly include melt spinning method and wet spinning meth...

Claims

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Application Information

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IPC IPC(8): D01F9/16C01B32/336C01B32/318
CPCD01F9/16C01B32/336C01B32/318
Inventor 孙帅
Owner 承德石油高等专科学校