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Preparation method of three-phase ceramic fiber composite heat insulation tile

A ceramic fiber and heat insulation tile technology, applied in the field of high-temperature ceramic materials, can solve the problems of poor high-temperature volume stability and heat-resistant temperature to be improved, and achieve high strength retention, low density, and good thermal conductivity.

Active Publication Date: 2020-12-25
JIAMUSI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 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 three-phase ceramic fiber composite heat-insulating tile

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0017] Specific implementation mode 1: The preparation method of the three-phase ceramic fiber composite heat insulation tile in this implementation mode is implemented according to the following steps:

[0018] 1. Boron oxide (B 2 O 3 ) powder and zirconia (ZrO 2 ) powder is added to the silica sol, dispersed evenly to obtain a mixed sol, adding quartz ceramic fibers to the mixed sol, stirring and mixing, and drying to obtain pretreated quartz ceramic fibers;

[0019] 2. According to the mass ratio of (10~25):(25~45):(20~35), the opacifying agent silicon carbide, the adhesive composition and the sintering aid boron nitride are mixed to obtain a mixed solid, and then Mix the mixed solid material with the ethanol solution evenly to obtain a mixed slurry;

[0020] 3. Mix 50-60 parts of pretreated quartz ceramic fiber, 15-25 parts of silicon carbide ceramic fiber, 10-30 parts of alumina fiber and polyacrylamide aqueous solution in parts by mass to obtain a ceramic fiber mixtur...

specific Embodiment approach 2

[0026] Specific embodiment two: the difference between this embodiment and specific embodiment one is that SiO in the silica sol described in step one 2 The content is 15-20wt%.

specific Embodiment approach 3

[0027] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the drying treatment described in step 1 is to dry at 100° C. to 130° C. for 2 to 5 hours.

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Abstract

The invention discloses a preparation method of a three-phase ceramic fiber composite heat insulation tile, belongs to the technical field of high-temperature ceramic materials, and aims at solving the problems that the heat-resistant temperature of an existing ceramic fiber heat insulation tile needs to be increased and the high-temperature volume stability is poor. The preparation method comprises the following steps of: 1, adding boron oxide powder and zirconium oxide powder into silica sol, adding quartz ceramic fibers into the mixed sol, and drying to obtain pretreated quartz ceramic fibers; 2, mixing an opacifying agent, an adhesive composition and a sintering aid, and adding an ethanol solution to obtain mixed slurry; 3, uniformly mixing the pretreated quartz ceramic fibers, siliconcarbide ceramic fibers, alumina fibers and a polyacrylamide aqueous solution to obtain a ceramic fiber mixture; 4, mixing the mixed slurry with the ceramic fiber mixture; 5, pressing to form a ceramic fiber composite dry blank; and 6, carrying out sintering treatment. The quartz ceramic fibers are pretreated, crystallization of the quartz ceramic fibers is inhibited, and the heat insulation performance and the high-temperature stability of the composite heat insulation tile are improved.

Description

technical field [0001] The invention belongs to the technical field of high-temperature ceramic materials, and in particular relates to a preparation method of a ceramic fiber high-temperature heat insulation material. Background technique [0002] In recent years, in the field of aerospace, high-Mach number aircraft has been vigorously developed. When high-speed aircraft enter the atmosphere, due to high-speed friction, there is a severe aerodynamic heating effect. Facing such a harsh aerodynamic heating environment, how to reduce from The heat transferred from the surface of the aircraft to the interior to ensure the safety of the main structure and internal instruments and equipment of the aircraft during long-term flight has become a hot research topic at present. [0003] Ceramic fiber thermal insulation tiles have become the most important thermal protection materials for aerospace vehicles due to their excellent radiation heat dissipation, heat insulation, and erosion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/01C04B35/14C04B35/48C04B35/80C04B35/64
CPCC04B35/01C04B35/14C04B35/48C04B35/64C04B2235/3826C04B2235/386C04B2235/5224C04B2235/5228C04B2235/5244C04B2235/606C04B2235/6562C04B2235/96C04B2235/9607
Inventor 李国晶赵化启王晶彦焦玉凤杨涵崧刘文斌杨婷婷何丽丽姚潍
Owner JIAMUSI UNIVERSITY
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