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Aerogel ceramic fiber insulation board and preparation method thereof

A technology of ceramic fiber and heat insulation board, which is applied in ceramic products, other household appliances, applications, etc., to achieve long service life, good strength, and the effect of ensuring formability and strength

Active Publication Date: 2018-09-28
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] The above-mentioned prior art provides the preparation of airgel composite panels, which is practicable, but also has certain defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add ethyl orthosilicate, methyltrimethoxysilane, ethanol, and water into the stirring tank in sequence according to the molar ratio of 1:0.3:8:4, stir for more than 24 hours to obtain liquid A, and set aside. Add 40% liquid caustic soda to ethanol, stir evenly to obtain liquid B with a mass concentration of 0.1%, and set aside; use 2.5kg of aluminum silicate ceramic fiber cotton, 0.13kg of rutile titanium dioxide as an infrared sunscreen, and 0.12kg of glass fiber composite The powder was sequentially added into a beater equipped with 27.5kg of liquid A according to the mass ratio, and the beating time was 30 minutes to obtain a mixed slurry. The mixed slurry is formed into a plate with an area of ​​500×1000mm by vacuum suction filtration, pressed to a plate with a thickness of 20mm, and the wet plate is demoulded into a tray. Take 4.5kg of filtrate and mix it with liquid B according to the volume ratio of 1:0.8, and soak the wet plate in the mixed liquid to make the pl...

Embodiment 2

[0029] Add ethyl orthosilicate, methyltrimethoxysilane, ethanol, and water into the stirring tank in sequence according to the molar ratio of 1:0.3:8:4, stir for more than 24 hours to obtain liquid A, and set aside. Add 40% liquid caustic soda into ethanol, stir evenly to obtain liquid B with a mass concentration of 0.1%, and set aside. Add 2.0kg of alumina ceramic fiber cotton, 0.10kg of potassium hexatitanate whisker as an infrared sunscreen, and 0.05kg of glass fiber composite powder into a beater containing 27.5kg of liquid A in sequence according to the mass ratio, and the beating time is controlled At 25 min, a mixed slurry was obtained. The mixed slurry is formed into a plate with an area of ​​500×1000mm by vacuum suction filtration, pressed to a plate with a thickness of 20mm, and the wet plate is demoulded into a tray. Take 4.5kg of the filtrate and mix it with B solution according to the volume ratio of 1:1, soak the wet plate in the mixed solution, and make the pla...

Embodiment 3

[0032] Add ethyl orthosilicate, methyltrimethoxysilane, ethanol, and water into the stirring tank in sequence according to the molar ratio of 1:0.3:8:3, stir for more than 24 hours to obtain liquid A, and set aside. Add 40% liquid caustic soda into ethanol, stir evenly to obtain liquid B with a mass concentration of 0.1%, and set aside. Add 2.0kg of mullite ceramic fiber cotton, 0.10kg of silicon carbide powder as an infrared light-shielding agent, and 0.1kg of glass fiber composite powder to a beater equipped with 27.5kg of liquid A according to the mass ratio, and the beating time is 1h to obtain Mix slurry. The mixed slurry is formed into a plate with an area of ​​500×1000mm by vacuum suction filtration, pressed to a plate with a thickness of 20mm, and the wet plate is demoulded into a tray. Take 4.5kg of filtrate and mix it with liquid B according to the volume ratio of 1:0.8, and soak the wet plate in the mixed liquid to make the plate saturated and absorb the mixed liqu...

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Abstract

The invention discloses an aerogel ceramic fiber insulation board and a preparation method thereof. A thermal conductivity of the aerogel ceramic fiber insulation board at 25 DEG C is equal to or smaller than 0.021W / (m*K), the thermal conductivity at 500 DEG C is equal to or smaller than 0.050W / (m*K), and the density is 250-350kg / m<3>; and the preparation technology comprises preparing fluid of sol and a gelatinizing agent, beating, molding, gelatinizing and drying. A high-efficiency adiabatic aerogel composite board without organic binder and the preparation method thereof, provided by the invention, can be used in the field with the working temperature of 800 DEG C or 1200 DEG C or over 1200 DEGC.

Description

technical field [0001] The invention belongs to the technical field of heat insulation, and in particular relates to an airgel ceramic fiber heat insulation board and a preparation method thereof. Background technique [0002] Aerogel is the material with the best thermal insulation performance so far, and the aerogel currently used in the field of thermal insulation is mainly silica aerogel. Because of its brittleness, silica airgel is usually used as an airgel composite material made of silica gas and glass fiber, rock wool, ceramic fiber, etc. Airgel composite materials mainly include airgel felt, board, paper and so on. The airgel ceramic fiber board formed by compounding with ceramic fiber has excellent high temperature resistance and good heat insulation performance, and also has excellent toughness and strength, and can be cut and processed at will. preferred material. [0003] Patent CN106673490A discloses an airgel plate and its preparation method, which is prepa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B30/02
CPCC04B30/02C04B2111/40C04B2201/20C04B2201/32C04B14/46C04B14/064C04B38/0067C04B38/0022
Inventor 陈勇段国栋陈世忠
Owner 响水华夏特材科技发展有限公司
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