Preparation method of heat insulation tile blank capable of resisting high temperature of 2000 DEG C

A technology for thermal insulation tiles and green bodies, which is applied in the field of thermal protection material preparation, can solve the problems of low strength, poor oxidation resistance, complicated post-processing, etc., so as to improve the stability of ceramics, improve the sintering temperature, and ensure uniform preparation. Effect

Active Publication Date: 2021-01-22
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of insufficient heat-resistant temperature, low strength, poor oxidation resistance, complicated after-treatment, and poor uniformity of the body of the rigid heat-insulating tile, and provide a heat-insulating tile blank that can withstand high temperatures of 2000°C The preparation method of the body; the prepared rigid insulation tile body has the advantages of high body strength, uniform composition, high heat resistance temperature, good oxidation resistance, and simple preparation and operation.

Method used

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  • Preparation method of heat insulation tile blank capable of resisting high temperature of 2000 DEG C

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Effect test

Embodiment 1

[0037] A method for preparing a heat-insulating tile body that can withstand a high temperature of 2000°C, the specific steps are as follows:

[0038] Step 1. After impregnating the fiber in sol A, take it out and vacuum dry it (vacuum degree is 0.08MPa, drying temperature is 180°C), then transfer it to sol B, take it out after impregnating it and dry it in vacuum, and then transfer it to a hydrophobic tank for hydrophobic treatment, and then transferred to solution A for immersion, taken out and vacuum dried, then transferred to solution B for immersion, taken out and vacuum dried, then transferred to solution C for immersion, taken out and vacuum dried to obtain pretreated fibers;

[0039] The fibers are carbon fibers;

[0040] The sol A is an aluminum sol solution with a mass fraction of 15%;

[0041] The sol B is a zirconium sol solution with a mass fraction of 15%;

[0042] The solution A is a polyborazane solution; the solution B is a polycarbosilane solution; the solu...

Embodiment 2

[0057] A method for preparing a heat-insulating tile body that can withstand a high temperature of 2000°C, the specific steps are as follows:

[0058] Step 1. After impregnating the fiber in sol A, take it out and dry it in vacuum (vacuum degree is 0.09MPa, drying temperature is 120°C), then transfer it to sol B, take it out after impregnating it and dry it in vacuum, and then transfer it to the water-repellent tank for water-repellent treatment, and then transferred to solution A for immersion, taken out and vacuum dried, then transferred to solution B for immersion, taken out and vacuum dried, then transferred to solution C for immersion, taken out and vacuum dried to obtain pretreated fibers;

[0059] Described fiber is the composition of zirconia fiber, zirconium carbide fiber, silicon carbide fiber, boron nitride fiber, silicon nitride fiber, and its mass ratio is 6:1:1:1:1;

[0060] The sol A is an aluminum sol solution with a mass fraction of 5%;

[0061] The sol B is ...

Embodiment 3

[0076] A method for preparing a heat-insulating tile body that can withstand a high temperature of 2000°C, the specific steps are as follows:

[0077] Step 1. After impregnating the fiber in sol A, take it out and dry it in vacuum (vacuum degree is 0.10 MPa, drying temperature is 80°C), then transfer it to sol B, take it out after impregnating it and dry it in vacuum, and then transfer it to a hydrophobic tank for hydrophobic treatment, and then transferred to solution A for immersion, taken out and vacuum dried, then transferred to solution B for immersion, taken out and vacuum dried, then transferred to solution C for immersion, taken out and vacuum dried to obtain pretreated fibers;

[0078] Described fiber is the composition of carbon fiber, zirconium carbide fiber, silicon carbide fiber, boron nitride fiber, and its mass ratio is respectively 4:2:1:1;

[0079] The sol A is an aluminum sol solution with a mass fraction of 35%;

[0080] The sol B is a zirconium sol solutio...

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Abstract

The invention provides a preparation method of a heat insulation tile blank capable of resisting high temperature of 2000 DEG C. The preparation method belongs to the technical field of thermal protection material preparation, and comprises the following steps: dipping fibers in sol A, taking out, carrying out vacuum drying, transferring into sol B, dipping, taking out, carrying out vacuum drying,transferring into a hydrophobic tank, and carrying out hydrophobic treatment, transferring into a solution A, dipping, taking out, carrying out vacuum drying, transferring into a solution B, dipping,taking out, carrying out vacuum drying, transferring into a solution C, dipping, taking out, and carrying out vacuum drying to obtain pretreated fibers; adding the pretreated fibers, an auxiliary agent A, an auxiliary agent B and an auxiliary agent C into water, and uniformly stirring and dispersing to obtain slurry; adding the slurry into a forming tool, filtering and forming to obtain a wet blank; taking out the wet blank from the forming tool, putting the wet blank into a fixing tool, and transferring the wet blank into a drying oven for drying to obtain a dry blank; and heating and sintering the dry blank under the protection of inert gas, and then naturally cooling to room temperature to obtain a sintered heat insulation tile blank body.

Description

technical field [0001] The invention relates to a method for preparing a heat-insulating tile body that can withstand a high temperature of 2000°C, and belongs to the technical field of heat protection material preparation. Background technique [0002] Rigid heat insulation tile is an excellent thermal protection material, which has the advantages of high temperature resistance, low density, high strength, good air erosion resistance, good heat insulation performance, and reusability. [0003] The use temperature and environment of rigid thermal insulation tiles are essentially related to the raw materials used, and are also the basic material guarantee for the production of rigid thermal insulation tiles with excellent performance. At present, the rigid insulation tile made of carbon fiber as the main material is the mainstream application product in the temperature range of 2000 °C, but this type of product has low strength, poor oxidation resistance, uneven distribution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/628
CPCC04B35/66C04B35/62852C04B35/62855C04B35/62844C04B2235/5236C04B2235/5248C04B2235/524C04B2235/5244C04B2235/3225C04B2235/3229C04B2235/3227C04B2235/483C04B2235/6562C04B2235/9607C04B2235/77C04B2235/96
Inventor 刘晓波孔德隆安烜熜张凡张杨李文静杨洁颖张昊
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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