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A kind of preparation method of nanometer wall thickness foam carbon

A foam carbon and nano-wall technology, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of reduced thermal conductivity, carbon wall thickness, unfavorable carbon skeleton fully exposed and effective utilization, etc., to achieve simple preparation steps , Improved thermal conductivity, good tensile and compressive strength

Active Publication Date: 2019-01-04
山东明大电器股份有限公司
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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: Aiming at the drawbacks that the foamed carbon wall obtained at present is relatively thick, which is not conducive to the full exposure and effective utilization of the carbon skeleton, resulting in a decrease in its thermal conductivity, a method of mixing waste sugarcane bagasse with deionized water is provided. Fermentation, filter to obtain filter residue, heat reflux with sulfuric acid solution, phenol, etc., add absolute ethanol, shake and mix, filter with suction, concentrate the filtrate, heat reflux with formaldehyde and glacial acetic acid solution, concentrate, ferment, concentrate, grind After grinding, adding polyvinyl alcohol and mixing, dry pressing, carbonization, and activation treatment to prepare foamed carbon with nano-wall thickness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] First collect waste bagasse, wash it and dry it, crush it with a jet mill and sieve it to prepare a 40-mesh bagasse powder, mix deionized water and bagasse powder in a mass ratio of 1:5, and Sealed fermentation at 25°C for 3 days, after the sealed fermentation is completed, filter it and collect the filter residue, dry at 95°C for 6 hours to prepare fermented bagasse powder; then weigh 35 parts of the above-prepared Fermented bagasse powder, 10 parts of 0.8mol / L sulfuric acid solution, 55 parts of phenol and 5 parts of glacial acetic acid solution were placed in a three-necked flask, stirred and mixed and heated to reflux for 1 hour to prepare bagasse powder mixed solution, and then mass ratio 1: 1. Stir and mix the bagasse powder mixture with absolute ethanol, and ultrasonically oscillate at 200W for 10 minutes. After the treatment is completed, collect the filtrate by suction filtration, and rotary evaporate at 75°C to 1 / 8 of the original volume to prepare To obtain l...

example 2

[0018]First collect waste bagasse, wash it and dry it, crush it with a jet mill and sieve it to prepare bagasse powder of 50 mesh, mix deionized water and bagasse powder according to the mass ratio of 1:5, and Sealed fermentation at 28°C for 4 days, after the sealed fermentation is completed, filter it and collect the filter residue, dry at 98°C for 7 hours to prepare fermented bagasse powder; then weigh 40 parts of the above-prepared Fermented bagasse powder, 13 parts of 0.8mol / L sulfuric acid solution, 62 parts of phenol and 8 parts of glacial acetic acid solution were placed in a three-necked flask, stirred and mixed and heated to reflux for 2 hours to prepare bagasse powder mixed solution, and then mass ratio 1: 1. Stir and mix the bagasse powder mixture with absolute ethanol, and ultrasonically oscillate at 250W for 13 minutes. After the treatment is completed, collect the filtrate by suction filtration, and rotary evaporate at 78°C to 1 / 8 of the original volume to prepare...

example 3

[0020] First collect waste bagasse, wash it and dry it, crush it with a jet mill and sieve it to prepare a 60-mesh bagasse powder, stir and mix deionized water and bagasse powder in a mass ratio of 1:5, Sealed fermentation at 30°C for 5 days, after the sealed fermentation is completed, filter it and collect the filter residue, dry at 100°C for 8 hours to prepare fermented bagasse powder; then weigh 45 parts of the above-prepared Fermented bagasse powder, 15 parts of 0.8mol / L sulfuric acid solution, 70 parts of phenol and 10 parts of glacial acetic acid solution were placed in a three-necked flask, stirred and mixed and heated to reflux for 2 hours to prepare bagasse powder mixed solution, and then mass ratio 1: 1. Stir and mix the bagasse powder mixture with absolute ethanol, and ultrasonically oscillate at 300W for 15 minutes. After the treatment is completed, collect the filtrate by suction filtration, and rotary evaporate at 80°C to 1 / 8 of the original volume to prepare To ...

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Abstract

The invention belongs to the technical field of foam carbon and discloses a nano wall thickness foam carbon preparation method. The method includes: subjecting waste bagasse and deionized water to mixed fermentation, filtering to obtain filter residues, subjecting to heating and refluxing with sulfuric acid solution, phenol and the like, adding absolute ethyl alcohol, performing vibration mixing, leaching and filtrate concentration, subjecting to heating and refluxing with formaldehyde and glacial acetic acid solution, concentrating, fermenting, concentrating, grinding, adding polyvinyl alcohol, and performing dry pressing, carbonizing and activating treatment to obtain nano wall thickness foam carbon. The nano wall thickness foam carbon preparation method has advantages that preparation steps are simple, and the problem that foam carbon which is thick in carbon wall is not good for complete exposure and effective utilization of carbon skeletons is effectively solved; in addition, thermal conductivity of a product is improved by 22-25%, and high tensile and compressive strength is achieved.

Description

technical field [0001] The invention relates to a method for preparing foamed carbon with nanometer wall thickness, and belongs to the technical field of foamed carbon preparation. Background technique [0002] Foam carbon is a kind of lightweight network porous carbon material with large pore size formed by connecting carbon atoms with carbon atoms as the skeleton, which is obtained by using organic matter as the precursor of carbon through high-temperature foaming and high-temperature carbonization. According to the microstructure of the pores, it can be divided into graphitizable carbon foam and non-graphitizable carbon foam, both of which have excellent physical and chemical stability. According to the structure, the types of foamed carbon can be divided into two types: pentagonal dodecahedron and regularly arranged spherical pore-like structure. Pentagonal dodecahedral foamed carbon is also called network glassy foamed carbon. Large prisms, cross-linked between prisms ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/336
CPCC01P2006/10C01P2006/32C01P2006/90
Inventor 梅庆波盛海丰高玉刚
Owner 山东明大电器股份有限公司
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