A kind of preparation method of phenolic resin base foam carbon

A technology of phenolic resin and foam carbon, which is applied in the preparation/purification of carbon, etc. It can solve the problems of environmental equipment hazards, low porosity and easy cracking of foam carbon, and achieve the effects of promoting formation, increasing porosity, and improving activity

Active Publication Date: 2019-12-17
沈阳鑫逸洲保温材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention: the foamed carbon prepared by the phenolic resin has low porosity, and it is easy to break during high-pressure degassing or high-temperature carbonization, which makes it difficult to control the overall structure of the foamed carbon, especially for the preparation of large particle foamed carbon. Some chlorofluorocarbon blowing agents are used in the process, which has great harm to the environment and equipment. A preparation method of phenolic resin-based foam carbon is provided.

Method used

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  • A kind of preparation method of phenolic resin base foam carbon
  • A kind of preparation method of phenolic resin base foam carbon

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preparation example Construction

[0017] The preparation method of phenolic resin base foam carbon of the present invention comprises the steps:

[0018] (1) According to the mass ratio of 1:3, mix loofah and hydrogen peroxide evenly, place it in an ultrasonic oscillator, oscillate ultrasonically at 1.2-1.5MHz for 15-20min, use sodium hydroxide solution to adjust the pH to 8.0-8.5, and then Add manganese acetate with loofah mass of 1.2-1.3%, stir at 180r / min for 5-10min, let stand for 40-50min, filter, collect the filter residue, wash the filter residue with water until the washed liquid is neutral, collect the washed filter residue , put it in a 90°C drying oven to dry, and collect the dry matter;

[0019] (2) Put the dry matter into the carbonization furnace, use nitrogen protection, pre-carbonize at 160-180°C for 2-4 hours, and collect the pre-carbonized matter;

[0020] (3) According to the mass ratio of 5-7:1, take phenolic resin and polyaniline and put them into a ball mill, then add 4-6 times of phenol...

example 1

[0023] The phenolic resin is selected from thermoplastic phenolic resin.

[0024] The preparation method of phenolic resin base foam carbon of the present invention comprises the steps:

[0025] (1) According to the mass ratio of 1:3, mix loofah and hydrogen peroxide evenly, place it in an ultrasonic oscillator, oscillate at 1.5MHz for 20 minutes, use sodium hydroxide solution to adjust the pH to 8.5, and then add 1.3% of the mass of loofah manganese acetate, stirred at 180r / min for 10min, let stand for 50min, filtered, collected the filter residue, washed the filter residue with water until the washed liquid was neutral, collected the washed filter residue, put it in a 90°C drying oven for drying, collected and dried thing;

[0026] (2) Put the dry matter into a carbonization furnace, use nitrogen protection, pre-carbonize at 180°C for 4 hours, and collect the pre-carbonized matter;

[0027] (3) According to the mass ratio of 7:1, take phenolic resin and polyaniline and put...

example 2

[0030] The phenolic resin is selected from thermoplastic phenolic resin.

[0031] The preparation method of phenolic resin base foam carbon of the present invention comprises the steps:

[0032] (1) According to the mass ratio of 1:3, mix loofah and hydrogen peroxide evenly, place it in an ultrasonic oscillator, and oscillate ultrasonically at 1.2MHz for 15 minutes, use sodium hydroxide solution to adjust the pH to 8.0, and then add 1.2% of the mass of loofah manganese acetate, stirred at 180r / min for 5min, let stand for 40min, filtered, collected the filter residue, washed the filter residue with water until the washed liquid was neutral, collected the washed filter residue, put it in a 90°C drying oven for drying, collected and dried thing;

[0033] (2) Put the dry matter into the carbonization furnace, use nitrogen protection, pre-carbonize at 160°C for 2 hours, and collect the pre-carbonized matter;

[0034] (3) According to the mass ratio of 5:1, take phenolic resin and...

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Abstract

The invention relates to a preparation method of phenolic resin based foam carbon and belongs to the technical field of porous carbon material preparation. The preparation method disclosed by the invention comprises the steps: firstly taking loofah sponge and hydrogen peroxide to be evenly mixed, performing ultrasonic oscillation, utilizing a sodium hydroxide solution to adjust pH, then adding manganese acetate, stirring, standing, filtering, collecting filter residues, washing the filter residues by water until washed liquid is in a neutral state, collecting the washed filter residues, drying and collecting dry articles; pre-carbonizing the dry articles and collecting pre-carbonized articles; taking phenolic resin to be ball milled with polyaniline, collecting ball-milling articles, stirring and mixing the ball-milling articles, n-pentane, N,N-dimethyl formamide and acetone, collecting a stirred mixture, mixing the pre-carbonized articles with the stirred mixture, centrifugally separating, collecting low-layer precipitation to obtain a foam carbon precursor and finally carbonizing the foam carbon. The phenolic resin based foam carbon prepared by the preparation method disclosed by the invention has high porosity, easiness in whole structure control and further small harm to environment and production equipment.

Description

technical field [0001] The invention relates to a method for preparing phenolic resin-based foamed carbon, and belongs to the technical field of porous carbon material preparation. Background technique [0002] Foamed carbon is a special new type of porous lightweight carbon material with small and interpenetrating pores, large specific surface area, and a wide range of density changes. It has a three-dimensional network structure composed of cells and interconnected cell walls. , optics, electricity, heat and dynamics have unique properties. Foamed carbon was first made by polymer pyrolysis and carbonization, and was quickly developed and applied. It has broad application prospects in high-tech military industry, aerospace and aviation fields, high temperature, wave-absorbing materials, and high-performance fuel cells. In addition, foamed carbon has great development and utilization potential in energy storage materials, stealth materials, nuclear protection materials, cat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/05
Inventor 邵俊英薛焱璟王磊
Owner 沈阳鑫逸洲保温材料有限公司
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