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Preparation method of 1500°C light-weight and rigid ceramic fiber heat-insulating tile

A ceramic fiber and heat-insulating tile technology, which is applied in the field of high-temperature ceramic fiber porous materials, can solve the problems of the heat-resistant temperature of the ceramic fiber heat-insulating tile and poor high-temperature volume stability, etc., to achieve high-temperature volume stability, Improve tissue stability and improve the effect of the preparation process

Active Publication Date: 2020-04-07
深圳申成科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the heat-resistant temperature of the existing ceramic fiber heat-insulating tile needs to be improved, and the volume stability at high temperature is not good, and to provide a preparation method of a light-weight rigid ceramic fiber heat-insulating tile that can withstand 1500°C

Method used

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  • Preparation method of 1500°C light-weight and rigid ceramic fiber heat-insulating tile
  • Preparation method of 1500°C light-weight and rigid ceramic fiber heat-insulating tile

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Experimental program
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specific Embodiment approach 1

[0021] Specific implementation mode 1: In this implementation mode, the preparation method of 1500°C-resistant lightweight rigid ceramic fiber heat-insulating tile is implemented according to the following steps:

[0022] 1. According to the mass ratio of (20~40):(25~35):(25~35), the infrared sunscreen agent zirconia, the binder sucrose and the sintering aid boron nitride are mixed to obtain the mixed powder, and the Mix deionized water and absolute ethanol to obtain an ethanol solution, then uniformly mix the mixed powder with the ethanol solution to obtain a powder solution, and then uniformly mix the ceramic fiber and deionized water according to the mass ratio of 1: (30-100) A ceramic fiber solution is obtained, and finally the powder solution is mixed with the ceramic fiber solution to obtain a fiber slurry solution;

[0023] 2. Pour the fiber slurry solution obtained in step 1 into a stainless steel mold with holes, and after standing still, use vacuum filtration to drai...

specific Embodiment approach 2

[0029] Embodiment 2: This embodiment differs from Embodiment 1 in that the diameter of the quartz ceramic fiber and the silicon carbide ceramic fiber is 1-2 μm, and the diameter of the mullite fiber is 5-8 μm. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0030] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the fiber length of the quartz ceramic fiber, silicon carbide ceramic fiber and mullite fiber is 5-6.5 mm. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a preparation method of a light rigid ceramic fiber heat shield tile capable of tolerating a temperature of 1500 DEG C, belongs to the technical field of high temperature ceramic fiber porous materials, and aims to solve the problems that the heatproof temperature of conventional ceramic fiber heat shield tiles needs to be increased, and the high temperature volume stability is not good. The preparation method comprises the following steps: step one, adding zirconia, cane sugar, and boron nitride into an ethanol solution to obtain a solution of powder, and mixing the solution of powder with a ceramic fiber solution to obtain a fiber slurry solution; step two, making a heat shield tile wet blank through pressing, and drying the wet blank to obtain a ceramic heat shield tile dry bank; step three, preparing Si-C-O gel; step four, soaking the ceramic heat shield tile dry blank into the Si-C-O gel, and drying the wet blank in vacuum to obtain a dry blank; and step five, carrying out a sintering treatment. The main component of the heat shield tile is quartz ceramic fibers, and silicon carbide fibers and mullite fibers are the auxiliary materials. The ceramic heat shield tile dry blank is soaked in gel. The thermal conductivity of the prepared ceramic heat shield tile can reach 0.045-0.055 W / m.K, and the high temperature volume stability is also improved.

Description

technical field [0001] The invention belongs to the technical field of high-temperature ceramic fiber porous materials, and in particular relates to a preparation method of a rigid ceramic fiber heat-insulating tile. Background technique [0002] During the re-entry process of a high-Mach number spacecraft into the dense atmosphere, due to high-speed friction, there is a severe aerodynamic heating effect. Therefore, it is necessary to lay lightweight heat-insulating protective materials on the surface of the aircraft to block the inward transfer of heat, so as to ensure the safety of the aircraft. Safety and longevity. [0003] Compared with metal thermal protection systems, ceramic fiber thermal insulation tiles have the advantages of high temperature resistance, high strength, erosion resistance and good stability, and solve the shortcomings of the former in terms of structural quality, thermal expansion, connection and sealing. The 900-1500K sub-high temperature area on ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B35/80C04B35/622
CPCC04B35/622C04B35/66C04B35/80C04B2235/3244C04B2235/386C04B2235/3895C04B2235/5228C04B2235/5244C04B2235/77C04B2235/96C04B2235/9607
Inventor 钟业盛史丽萍李明伟赫晓东曾岗杨霖马晓亮罗国全李星星
Owner 深圳申成科技发展有限公司