Activated carbon fiber skeleton with three-dimensional space network structure and preparation method thereof

A technology of activated carbon fiber and network structure, applied in the field of activated carbon materials, can solve the problems of low production efficiency, difficult mechanical strength and high production cost of carbon fiber braid, and achieve the effects of high activated carbon content, good integrity and low production cost.

Inactive Publication Date: 2017-03-01
GUIYANG HEJING XINGTUO CONSULTATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production efficiency of carbon fiber braid is low, the connection points between fibers are not fixed connection, and the integrity is poor
[0004] The processing route of activated carbon fiber products mainly includes: using man-made fibers, after carbonization and activation, to make activated carbon fiber felts, cloths and other structures, shapes and sizes. The second is to load activated carbon powder on the fiber medium to make activated carbon fiber products of different structures, shapes and sizes. Such products have the problem of micropore blockage, poor integrity, decarbonization and inability to clean.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] The invention provides a method for preparing a three-dimensional space network structure activated carbon fiber skeleton, comprising the following steps:

[0032] Firstly, the wood fibers loaded or not loaded with activator and activated catalyst are bonded by polymer binder with or without activator and activated catalyst to obtain a three-dimensional space bonded by polymer binder. Non-fabric prefabricated body with network structure, wood fibers are distributed in three-dimensional and multi-directional, interweaved and cross-connected.

[0033] Then, the non-woven prefabricated body is subjected to carbonization and activation treatment to obtain an activated carbon fiber skeleton with a three-dimensional network structure loaded or not loaded with a catalyst.

[0034] In the preparation method of activated carbon fiber skeleton with three-dimensional space network structure of the present invention, the bonding between fibers in the aforementioned three-dimensiona...

Embodiment 1

[0051] Immerse coconut palm silk with a length of 30mm-250mm and a material-to-liquid ratio of 1:3-5 in ZnCl at 60°C 2 Immerse in the solution for 8 hours, the solution concentration is 50-57 degrees Baume, and the pH value is 1.0-3.5. After centrifugal drying, dry to a moisture content of 15%-20%, and the loaded ZnCl 2 Activator of coconut palm silk; the ZnCl 2 Added to natural latex aqueous solution to obtain a concentration of 6% ZnCl 2 Latex binder; Prepared coconut palm fiber is transported to cyclone separator, by free fall, obtains the fiber layer that thickness is 30mm; According to coconut palm fiber and natural latex dry matter weight ratio, be the glue consumption of 1:1, The prepared natural latex is evenly sprayed on the fiber layer, and the coconut palm fiber is bonded together, and then dried to obtain a coconut palm fiber mat with a moisture content of less than 20%. Bond 10 pieces of 30mm fiber felt to obtain a coconut palm felt with a thickness of 300mm; pu...

Embodiment 2

[0056] Dry the oil palm silk with a length of 30mm-250mm to a moisture content of 15%-20%; melt the asphalt to obtain an asphalt binder. The prepared oil palm silk is transported to the cyclone separator, and a fiber layer with a thickness of 20mm is obtained by free falling; according to the ratio of oil palm silk and asphalt mass ratio of 1:1.5, the prepared asphalt binder Spray evenly on the fiber layer to bond the fiber bundles into one. Put the oil palm flakes with a thickness of 20mm under the press, press statically for 10 seconds at a temperature of 120°C and a pressure of 5Mpa, and cut to obtain a density of 0.3g / cm 3 oil palm silk non-fabric preforms.

[0057] Put the oil palm silk non-fabric prefabricated body into the kiln and heat it at a heating rate of 10°C / min, heat it to 450°C-600°C and keep it warm for 90 minutes for carbonization; then continue heating at a heating rate of 15°C / min, and heat it to 800°C ℃~950℃, continuously inject superheated steam at 300℃...

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Abstract

The invention discloses a 3D space net structure active carbon fiber skeleton and a preparation method thereof and belongs to the field of active carbon materials. The preparation method comprises a multidirectional-distributed interlaced crosswise-bonded integral non-woven preformed material is prepared from wood fibers and a polymer binder as carbon sources, and the preformed material is subjected to carbonization and activation to form the polymer binder active carbon-fixedly connected 3D space net structure active carbon fiber skeleton. Compared with the existing powdery or granular or active carbon fiber-woven material, the active carbon fiber skeleton has good integrity, high porosity, good adsorption capacity and good biocompatibility, is mainly prepared from reproducible plant fibers, has a low making cost and can be widely used for fields of water purification, gas purification, water ecological restoration and catalytic carriers.

Description

technical field [0001] The invention relates to an activated carbon fiber skeleton with a three-dimensional space network structure and a preparation method thereof, belonging to the technical field of activated carbon materials. Background technique [0002] Activated carbon is a porous material with large specific surface area, strong adsorption capacity, acid and alkali resistance, heat resistance, insoluble in water and organic solvents, and is an environmentally friendly adsorption material and catalyst carrier, widely used in chemical industry, environmental protection, food Processing, metallurgy, military chemical protection and other fields. The main forms of activated carbon products are powder, granular and columnar, generally one-dimensional or two-dimensional structure, three-dimensional structure is difficult to process, high processing cost, difficult to meet the needs of market applications. [0003] The activated carbon with three-dimensional structure incl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/12
Inventor 王雄军陈刚
Owner GUIYANG HEJING XINGTUO CONSULTATION CO LTD
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