Nano ceramic thermal insulation material and preparation method thereof

A thermal insulation material, nano-ceramic technology, applied in the field of thermal insulation materials, can solve problems such as low high temperature resistance coefficient, difficult thermal insulation requirements, brittle and fragile quality, etc., to achieve low thermal conductivity at high temperature, no loss of protection, and low thermal insulation thickness Effect

Inactive Publication Date: 2020-11-17
烟台德孚瑞环保节能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this kind of material has the advantages of good thermal insulation performance and thin coating layer, it generally has the following defects: first, the volatilization of organic solvents causes environmental pollution, serious powder loss after drying and molding, and it is easy to cause dust pollution, and serious air pollution at the construction site ; Second, the high temperature resistance coefficient is low, especially at high temperatures (such as above 300 degrees), it is difficult to meet the thermal insulation requirements; third, the quality is brittle and fragile, and the thermal insulation effect decays significantly with time; fourth, it is applied to pipelines Due to poor toughness during heat insulation, it is easy to break with the expansion and contraction of the pipe

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment one, the first kind of coating preparation example

[0025] The first step: Mix 20kg of silica hydrosol with a mass concentration of 30%, 15kg of nano-titanium dioxide plus nano-alumina aqueous solution (15%), and 25kg of attapulgite hydrosol in a high-speed disperser for 5-10 minutes, add Ultra-fine lanthanide rare earth oxide and yttria-stabilized nano-zirconia additive (composite rare earth with a mass ratio of lanthanum, yttrium and zirconium of 1:1:5) 5kg and continue to stir for 10-15 minutes, then add ultra-fine fly ash ( 400 mesh or more) 15kg and stir for 10-20 minutes to form a gel solution.

[0026] Step 2: Put 80kg of glue solution into the blender and stir, add 80kg of glass fiber cotton (glass fiber cotton with 5-9 microns) and rotate at 80-120 rpm, stir for 15-30 minutes to form a pulp, and then add sea foam Stone wool 25kg, stir at the same rotation speed for 10-15 minutes, then add 10kg of vitrified microbeads (above 100 mesh) and 5kg of pow...

Embodiment 2

[0029] Embodiment two, the second kind of coating preparation example

[0030] The first step: Mix 20kg of silica hydrosol with a mass concentration of 30%, 15kg of nano-titanium dioxide plus nano-alumina aqueous solution (15%), and 25kg of attapulgite hydrosol in a high-speed disperser for 5-10 minutes, add Ultrafine lanthanide rare earth oxides and yttria-stabilized nano-zirconia additives (composite rare earths with a mass ratio of lanthanum, yttrium, and zirconium of 1:1:5) 6kg, continue stirring for 10-15 minutes, and then add ultrafine fly ash ( 400 mesh or more) 15kg and stir for 10-20 minutes to form a gel solution.

[0031] Step 2: Add 81kg of glue solution into the mixer and stir, add 90kg of mullite fiber, rotate at 80-120 rpm, stir for 15-30 minutes to form a pulp, then add 25kg of sepiolite, and stir at the same rotation speed After 10-15 minutes, add 10kg of vitrified microbeads (above 100 mesh) and 5kg of power plant floating beads, and stir at the same rotatio...

Embodiment 3

[0034] Embodiment three, the third coating preparation example

[0035] The first step: Mix 20kg of silica hydrosol with a mass concentration of 30%, 15kg of nano-titanium dioxide plus nano-alumina aqueous solution (15%), and 25kg of attapulgite hydrosol in a high-speed disperser for 5-10 minutes, add Ultrafine lanthanide rare earth oxides and yttria-stabilized nano-zirconia additives (composite rare earths with a mass ratio of lanthanum, yttrium, and zirconium of 1:1:5) 8kg continued to stir for 10-15 minutes, and then added ultrafine fly ash ( 400 mesh or more) 15kg and stir for 10-20 minutes to form a gel solution.

[0036] The second step: Add 83kg of glue solution into the mixer and stir, add 100kg of zirconium-containing aluminum silicate fiber, the number of revolutions is 80-120 revolutions per minute, stir for 15-30 minutes to form a pulp, then add 25kg of sepiolite wool, the same revolution Stir several times for 10-15 minutes, then add 10kg of vitrified microbeads ...

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Abstract

The invention relates to a nano ceramic thermal insulation material and a preparation method thereof. The preparation method comprises the following steps: preparing a glue solution from superfine lanthanum-based rare earth oxide, an yttrium oxide stabilized nano zirconium oxide auxiliary agent, nano titanium dioxide and nano aluminum oxide aqueous solution, attapulgite hydrosol, silicon dioxide hydrosol and fly ash; and then preparing the nano ceramic thermal insulation material by utilizing the glue solution, magnesium aluminum silicate fibers, sepiolite fabric, vitrified micro beads and power plant floating beads. The prepared material has the advantages of better high temperature resistance, higher strength, better toughness and no pollution.

Description

technical field [0001] The invention relates to a thermal insulation material and a preparation method thereof, in particular to a nano-ceramic thermal insulation material and a preparation method thereof, belonging to the field of thermal insulation materials. Background technique [0002] Existing thermal insulation materials are generally prepared from aluminum silicate wool, asbestos or ordinary glass fiber wool (about 14 microns) composited with nano-silica, and organic solvents are added as dispersion components during the preparation. Although this kind of material has the advantages of good thermal insulation performance and thin coating layer, it generally has the following defects: first, the volatilization of organic solvents causes environmental pollution, serious powder loss after drying and molding, and it is easy to cause dust pollution, and serious air pollution at the construction site ; Second, the high temperature resistance coefficient is low, especially ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B28/24C04B111/28
CPCC04B28/24C04B35/66C04B2111/00482C04B2111/28C04B2201/32C04B2201/50C04B14/4643C04B14/22C04B18/082C04B22/06C04B22/08C04B14/185
Inventor 李炳卢昊天李广志芦光磊
Owner 烟台德孚瑞环保节能科技有限公司
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