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Aluminum silicate fiber refractory felt with good heat insulation performance

A technology of aluminum silicate fiber felt and aluminum silicate fiber, which is applied in the field of refractory materials, can solve problems such as damage to objects in contact, burns, general heat insulation performance, etc., and achieve good heat insulation performance

Active Publication Date: 2017-12-01
徐州博创建设发展集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the general or insufficient heat insulation performance of the existing refractory felt, the purpose of the present invention is to provide a kind of aluminum silicate fiber refractory felt with strong heat insulation performance, which has good heat insulation performance and meets the needs of equipment heat preservation and fire prevention. , and avoid the temperature of the outer surface of the refractory felt being too high, causing the operator to burn or damage the contacted items

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of aluminum silicate fiber refractory felt with strong heat insulation. The aluminum silicate fiber felt is used as the matrix. The aluminum silicate fiber felt is immersed in nano-silica airgel slurry and dried. The thermal layer is then placed in the nano-silica airgel slurry and then impregnated and dried again.

[0021] Among them, the aluminum silicate fiber mat is preferably woven by modified aluminum silicate fibers; the nano-silica airgel slurry is preferably prepared by the following process: respectively grinding diatomite and activated clay and sieving through a 700-mesh sieve , mix 21g of diatomite, 10g of activated clay, 36g of nano-silica airgel, and 200g of water to make a nano-silica airgel slurry; the heat-resistant layer is preferably made of high-silica glass fiber and modified silicic acid The aluminum fiber is mixed with a mass ratio of 100:43, and the mass content of silica in the high silica glass fiber is 68%.

[0022] The modified alumin...

Embodiment 2

[0026] A kind of aluminum silicate fiber refractory felt with strong heat insulation. The aluminum silicate fiber felt is used as the matrix. The aluminum silicate fiber felt is immersed in nano-silica airgel slurry and dried. The thermal layer is then placed in the nano-silica airgel slurry and then impregnated and dried again.

[0027] Among them, the aluminum silicate fiber mat is preferably woven through modified aluminum silicate fibers; the nano-silica airgel slurry is preferably prepared by the following process: respectively grinding diatomite and activated clay and sieving through a 900-mesh sieve , mix 25g of diatomite, 23g of activated clay, 43g of nano-silica airgel, and 250g of water to make nano-silica airgel slurry; the heat-resistant layer is preferably made of high-silica glass fiber and modified silicic acid The aluminum fiber is mixed with a mass ratio of 100:50, and the mass content of silica in the high silica glass fiber is 72%.

[0028] The modified alu...

Embodiment 3

[0032] A kind of aluminum silicate fiber refractory felt with strong heat insulation. The aluminum silicate fiber felt is used as the matrix. The aluminum silicate fiber felt is immersed in nano-silica airgel slurry and dried. The thermal layer is then placed in the nano-silica airgel slurry and then impregnated and dried again.

[0033] Among them, the aluminum silicate fiber felt is preferably woven by modified aluminum silicate fibers; the nano-silica airgel slurry is preferably prepared by the following process: respectively grinding diatomite and activated clay and sieving through a 1000-mesh sieve , mix 29g of diatomite, 16g of activated clay, 50g of nano-silica airgel, and 300g of water to make nano-silica airgel slurry; the heat-resistant layer is preferably made of high-silica glass fiber and modified silicic acid The aluminum fiber is mixed and braided at a mass ratio of 100:57, and the mass content of silica in the high-silica glass fiber is 79%.

[0034] The modif...

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Abstract

The invention specifically discloses an aluminum silicate fiber refractory felt with good heat insulation performance, belonging to the technical field of refractory materials. The aluminum silicate fiber refractory felt is prepared by dipping an aluminum silicate fiber felt in nanometer aerosil slurry, then drying the aluminum silicate fiber felt, separately connecting the two sides of the aluminum silicate fiber felt with refractory layers, then dipping the aluminum silicate fiber felt in the nanometer aerosil slurry again and carrying out drying, wherein the aluminum silicate fiber felt is prepared from modified aluminum silicate fibers through braiding; the modified aluminum silicate fibers are prepared from kaolin powder, alumina, titanium dioxide, a dispersant, nanometer aerosil, polyimide resin, a silane coupling agent, an aluminum phosphate binder and water; and the nanometer aerosil slurry is prepared from diatomite, activated clay, nanometer aerosil and water. The aluminum silicate fiber refractory felt of the invention can form multilayer heat-insulatiing protection, has good heat insulation performance, can meet the demands of equipment for heat preservation and fire resistance and prevents scalding of operators or damage to articles contacting with the felt caused by too high surface temperature of the refractory felt.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to an aluminum silicate fiber refractory felt with strong heat insulation. Background technique [0002] Refractory felt is a heat-insulating refractory fiber product made of refractory fiber as raw material and pressure-molded after adding a binder. According to the type of binder used and the production process, it can be divided into refractory fiber wet felt and refractory fiber dry felt. Felt and refractory fiber wet felt can be used for heat insulation of various thermal equipment, lining of various industrial kilns, boilers, petrochemical cracking furnaces, heat insulation of heat pipes, heat insulation of high-rise buildings, sound absorption, and fire prevention. Although refractory blankets can play a role in refractory heat preservation, most refractory blankets have the problem of general or insufficient heat insulation performance. Poor heat ins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/04B32B17/12B32B5/06B32B7/12B32B37/12B32B17/02B32B9/00C03B37/00C03C13/06
CPCB32B5/02B32B5/06B32B7/12B32B9/047B32B17/067B32B37/12B32B2250/20B32B2262/10B32B2262/101B32B2307/304B32B2307/3065C03B37/00C03C13/06
Inventor 佘建锋
Owner 徐州博创建设发展集团有限公司
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