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High-elasticity high-temperature-resistant aerogel and preparation method thereof

A technology of high temperature resistance and airgel, which is applied in the direction of airgel preparation, botany equipment and methods, chemical instruments and methods, etc., to achieve the effect of high-efficiency oil absorption

Pending Publication Date: 2021-12-07
刘建浩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of highly elastic high temperature resistant airgel and its preparation method, to solve the problems existing in the prior art

Method used

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  • High-elasticity high-temperature-resistant aerogel and preparation method thereof

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Effect test

Embodiment 1

[0033] A method for preparing a high-elasticity and high-temperature-resistant aerogel, the preparation method of the high-elasticity and high-temperature-resistant aerogel mainly includes the following preparation steps:

[0034] (1) Collect livestock and poultry manure, add auxiliary materials with 0.2 times the mass of livestock and poultry manure, after stirring evenly, add strains with 0.005 times the mass of livestock and poultry manure, after stirring evenly, compost in the pretreatment shed, control the fermentation temperature to 70°C, Ferment for 20 days to obtain pretreated livestock and poultry manure;

[0035] (2) Place the pretreated livestock and poultry feces in a fixed bed pyrolysis device, heat to 100°C under a nitrogen atmosphere, keep warm for 2 minutes, then heat up to 250°C, keep warm for 30 minutes, and cool to room temperature to obtain a hydrophobic solid;

[0036] (3) Put the hydrophobic solid in a ball mill and mill it for 10 minutes, with a ball-to-...

Embodiment 2

[0052] A method for preparing a high-elasticity and high-temperature-resistant aerogel, the preparation method of the high-elasticity and high-temperature-resistant aerogel mainly includes the following preparation steps:

[0053] (1) Collect livestock and poultry manure, add auxiliary materials with 0.3 times the mass of livestock and poultry manure, after stirring evenly, add strains with 0.01 times the mass of livestock and poultry manure, after stirring evenly, compost in the pretreatment shed, control the fermentation temperature to 75°C, Ferment for 25 days to obtain pretreated livestock and poultry manure;

[0054] (2) Place the pretreated livestock and poultry feces in a fixed bed pyrolysis device, heat to 100°C under a nitrogen atmosphere, heat up to 300°C after holding for 4 minutes, and cool to room temperature after holding for 40 minutes to obtain a hydrophobic solid;

[0055] (3) Put the hydrophobic solid in a ball mill and mill it for 15 minutes with a ball-to-m...

Embodiment 3

[0071] A method for preparing a high-elasticity and high-temperature-resistant aerogel, the preparation method of the high-elasticity and high-temperature-resistant aerogel mainly includes the following preparation steps:

[0072] (1) collect livestock and poultry manure, add auxiliary materials of 0.24 times the mass of livestock and poultry manure, after stirring evenly, add bacteria strains of 0.0078 times the mass of livestock and poultry manure, after stirring evenly, compost in the pretreatment shed, control the fermentation temperature to 73°C, Ferment for 24 days to obtain pretreated livestock and poultry manure;

[0073] (2) Place the pretreated livestock and poultry manure in a fixed-bed pyrolysis device, and heat it to 100°C under a nitrogen atmosphere, heat it for 3 minutes, heat it up to 276° C, hold it for 33 minutes, and cool it to room temperature to obtain a hydrophobic solid;

[0074] (3) Put the hydrophobic solid in a ball mill and mill it for 14 minutes, wi...

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Abstract

The invention discloses high-elasticity high-temperature-resistant aerogel and a preparation method thereof, which relate to the technical field of aerogel materials. The aerogel is prepared from modified charcoal through the steps of low-temperature baking, carbon dioxide microwave heating, ultrasonic treatment, electrostatic directional freeze drying, vacuum sublimation and the like in sequence, a porous three-dimensional network structure is formed, and the aerogel is endowed with the properties of oil absorption and high elasticity; the modified charcoal is prepared from porous nano charcoal, amino hydroxyl naphthalene and methoxycarbonyl salicylaldehyde, and antibacterial groups and hydrophobic groups are introduced and act together to inhibit growth of bacteria, so that the aerogel has antibacterial activity. The prepared high-elasticity high-temperature-resistant aerogel has the effects of oil absorption, bacteriostasis and cyclic utilization.

Description

technical field [0001] The invention relates to the technical field of airgel materials, in particular to a high-elasticity and high-temperature-resistant airgel and a preparation method thereof. Background technique [0002] Once the carbon aerogel material appeared, it aroused great interest of researchers from all over the world. Unlike other aerogels, carbon aerogel has the characteristics of high temperature resistance and warmth retention, but it is lacking in antibacterial and high elasticity. . [0003] The current synthesis of such materials is usually based on the sol-gel reaction of phenolic solutions. There are many problems in this preparation method: (1) phenolic resin nanoparticle units are obtained by sol reaction, and then these units are cross-linked by gelation reaction to form a three-dimensional nano-network and then carbonized. Porous or quasi-porous. (2) The sol-gel reaction is usually completed in a static closed container, which makes it difficult...

Claims

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Application Information

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IPC IPC(8): B01J13/00B01J20/22B01J20/28B01J20/30C01B32/15A01N37/50A01N59/00A01P1/00
CPCC01B32/05Y02A40/22Y02P60/21
Inventor 刘建浩
Owner 刘建浩
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