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Aerogel modified magnesium oxysulfate fireproof insulation board and preparation method thereof

A fire-proof insulation board and aerogel technology are applied in the field of materials to achieve the effects of low density, improved thermal insulation performance and good thermal insulation performance

Active Publication Date: 2022-01-28
响水华夏特材科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies in the prior art, the present invention provides an airgel-modified magnesium oxysulfide fire-proof insulation board and its preparation method. Excellent properties such as temperature resistance and fire prevention, through the improvement of effective material composition and reasonable production process improvement, the use of airgel to modify and compound magnesium oxysulfide materials can effectively make up for the poor water resistance of existing magnesium oxysulfide boards , high density, high thermal conductivity and other defects

Method used

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  • Aerogel modified magnesium oxysulfate fireproof insulation board and preparation method thereof
  • Aerogel modified magnesium oxysulfate fireproof insulation board and preparation method thereof

Examples

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Effect test

Embodiment 1

[0089] A preparation method of an airgel-modified magnesium oxysulfide fireproof insulation board, specifically comprising the following steps:

[0090] Add 34kg of industrial magnesium sulfate heptahydrate into 22kg of water, fully stir and dissolve to obtain magnesium sulfate solution. Gradually add 0.7kg EVA rubber powder, 1.2kg citric acid, 10kg airgel composite powder, and mix well into the mixed powder, and carry out high-speed dispersion for 60 minutes at a gradually increasing speed of 300-3000r / min through a high-speed disperser to obtain improved magnesium sulfate solution. Then add 19kg of light-burned magnesia powder (the content of active magnesia in the light-burned magnesia powder is not less than 80%), fully stir for 5 minutes to form a uniform slurry, and the slurry is sent into the plate making machine for template filling, double-sided After the alkali-resistant grid cloth is covered and rolled flat, it is gradually solidified to obtain a wet board. After t...

Embodiment 2

[0094] A preparation method of an airgel-modified magnesium oxysulfide fireproof insulation board, specifically comprising the following steps:

[0095]Add 44kg of industrial magnesium sulfate heptahydrate into 33kg of water, fully stir and dissolve to obtain magnesium sulfate solution. Gradually add it to the mixed powder mixed with 1.0kg EVA rubber powder, 1.0kg citric acid, and 15kg airgel composite powder, and disperse at a high speed of 300-3000r / min for 60 minutes at a high speed through a high-speed disperser to obtain modified Magnesium sulfate solution. Then add 38kg of light-burned magnesia powder, stir fully for 5 minutes, and form a uniform slurry, which is sent to the plate making machine for template filling, double-sidedly coated with alkali-resistant glass fiber non-woven felt and rolled flat, and gradually solidified to obtain wet board, the wet board is cut and naturally cured, and the magnesium oxysulfide board is obtained, such as figure 2 As shown, Figu...

Embodiment 3

[0099] A preparation method of an airgel-modified magnesium oxysulfide fireproof insulation board, specifically comprising the following steps:

[0100] Add 39kg of industrial magnesium sulfate heptahydrate into 33kg of water, stir and dissolve fully to obtain magnesium sulfate solution. Gradually add it to the mixed powder mixed with 0.5kg EVA rubber powder, 1.0kg citric acid, and 13kg airgel composite powder, and disperse at a high speed of 300-3000r / min for 60 minutes at a high speed to obtain modified Magnesium sulfate solution. Then add 38kg of light-burned magnesia powder, stir thoroughly for 5 minutes to form a uniform slurry, which is sent to the plate making machine for template filling, double-sided covered with alkali-resistant glass fiber mesh cloth and rolled flat, and gradually solidified to obtain Wet board, the wet board is cut and naturally cured to obtain the magnesium oxysulfide board.

[0101] The gel composite powder used in this example is a powder mixe...

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Abstract

The invention provides an aerogel modified magnesium oxysulfate fireproof insulation board and a preparation method thereof. The insulation board is composed of fiber-containing aerogel powder composite powder, magnesium sulfate heptahydrate, light calcined magnesia powder and an additive. The preparation method mainly comprises the following steps: S1, preparing a magnesium sulfate aqueous solution; s2, dispersing the magnesium sulfate solution, the aerogel composite powder, an additive and the like into slurry fluid through a high-speed dispersion machine; s3, doping light calcined magnesia powder and stirring evenly to form slurry, then pouring in a board making machine mold, and obtaining the magnesium oxysulfate fireproof insulation board through curing forming, cutting and curing. Compared with a traditional magnesium oxysulfate board, the fireproof insulation board has the advantages that the strength of the board is guaranteed, the density is lower, the heat insulation performance is better, the water resistance is obviously improved, and the comprehensive performance is obviously improved.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to an airgel-modified magnesium oxysulfide fireproof insulation board and a preparation method thereof. Background technique [0002] Magnesium oxysulfide board is an air-hardening magnesium cementitious material product formed by activated magnesium oxide and magnesium sulfate solution. Compared with Portland cement board, magnesium oxysulfide board has relatively light texture, low thermal conductivity and excellent fire resistance It is widely used as a refractory insulating material, such as building wall panels, door core panels, ceiling panels, packaging boxes, etc., and can also be painted with blending paint and clear water paint according to needs, and can be processed into various types It can also be used for simple fire prevention projects in damp environments such as basements and mines. [0003] Compared with the commonly used magnesium oxychloride board, the magn...

Claims

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Application Information

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IPC IPC(8): C04B28/30C04B14/06C04B14/42C04B111/28C04B111/40C04B111/27
CPCC04B28/30C04B14/064C04B14/42C04B2111/40C04B2111/28C04B2111/27C04B2201/32C04B2201/20C04B2201/50C04B24/06C04B9/00C04B24/26
Inventor 陈勇段国栋陈世忠谢江徐兴艳张海华王浩浩
Owner 响水华夏特材科技发展有限公司
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