Method for preparing double-layer wave-permeable heat proofing and insulating composite structural part

A composite material and double-layer structure technology, which is applied in the field of preparation of double-layer anti-heat-insulation and wave-transmitting composite material structural parts to achieve the effects of excellent wave-transmitting performance, saving space and reducing wave-transmitting loss.

Active Publication Date: 2016-11-23
湖北三江航天江北机械工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no radome material with ideal comprehensive performance such as load bearing, wave penetration, high temperature resistance and heat insulation at home and abroad.

Method used

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  • Method for preparing double-layer wave-permeable heat proofing and insulating composite structural part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 Shown: The preparation of a double-layer anti-heat insulation wave-transparent radome for a short-range missile:

[0029] (1) Make quartz fiber profiling fabric according to the size requirements, then impregnate silica sol for multiple rounds, and obtain a density of 1.75g / cm after high temperature sintering and mechanical processing 3 The outer layer of quartz composite ceramic heat-proof material 4, that is, the outer layer of quartz composite ceramic cover body 4;

[0030] (2) Mix ethyl orthosilicate and n-octylamine at a molar ratio of 1:1.4, then stir electromagnetically at room temperature at 600rpm for 5 minutes, and then deionized water and ethyl orthosilicate at a molar ratio of 1:110. Ionized water was added to the above mixture, and the stirring was continued for 5 minutes, and a white precipitate would appear. The precipitate was then filtered off and dried at room temperature. Then place the dried solid precipitate in a muffle furnace w...

Embodiment 2

[0036] Preparation of double-layer anti-heat-insulation wave-transparent radome for a medium-range missile:

[0037] (1) Make hollow quartz fiber profiling fabric according to the size requirements, then impregnate silica sol for several rounds, and obtain a density of 1.70g / cm after high temperature sintering and mechanical processing 3 The outer layer of quartz composite ceramic cover.

[0038] (2) Mix tetraethyl orthosilicate and n-octylamine at a molar ratio of 1:1.2, then electromagnetically stir at room temperature at 500 rpm for 3 minutes, and then deionized water and tetraethyl orthosilicate at a molar ratio of 1:100. Ionized water was added to the above mixture, and the stirring was continued for 5 minutes, and a white precipitate would appear. The precipitate was then filtered off and dried at room temperature. Then place the dried solid precipitate in a muffle furnace with a heating rate of 1°C / min, keep it at 700°C for 4 hours, and cool down with the furnace to o...

Embodiment 3

[0044] Preparation of double-layer anti-heat insulation and wave-transparent antenna window for a medium-range missile:

[0045] (1) Make quartz fiber profiling fabric according to the size requirements, then impregnate silica sol for several rounds, and obtain a density of 1.78g / cm after high-temperature sintering and mechanical processing 3 The outer layer of quartz composite ceramic windows.

[0046] (2) Mix tetraethyl orthosilicate and n-octylamine at a molar ratio of 1:1.3, then electromagnetically stir at room temperature at 700 rpm for 3 minutes, and then deionized water and tetraethyl orthosilicate at a molar ratio of 1:120 Ionized water was added to the above mixture, and the stirring was continued for 5 minutes, and a white precipitate would appear. The precipitate was then filtered off and dried at room temperature. Then place the dried solid precipitate in a muffle furnace with a heating rate of 1°C / min, keep it at 600°C for 5 hours, and cool down with the furnac...

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Abstract

The invention discloses a method for preparing a double-layer wave-permeable heat proofing and insulating composite structural part. The structural part comprises an inner heat insulation material and an outer heat-proof +material. The method includes steps of preparation of the outer heat-proof material, preparation of silicon oxide hollow microspheres, preparation of chopped fiber reinforced silicon oxide hollow microsphere slurry, casting of the chopped fiber reinforced silicon oxide hollow microsphere slurry and thermal treatment of a structural part blank material. Quartz fiber reinforced quartz composite ceramic serves as the outer heat-proof material, chopped fiber reinforced silicon oxide hollow microsphere ceramic serves as the inner heat insulation material, compact combination of the inner and outer materials is realized by means of slurry casting and high-temperature sintering moulding, and integration of advantageous performances of high temperature resistance, heat proofing, heat insulation, wave permeability and the like is realized.

Description

technical field [0001] The invention relates to the technical field of preparation of heat-insulating and wave-transmitting composite material structural parts for missile weapon systems, in particular to a preparation method of a double-layer structure heat-insulating and wave-transmitting composite material structural part, which can be used for high-Mach medium-range missiles with high temperature resistance Anti-heat insulation radome, antenna window and other wave-transparent materials. Background technique [0002] With the development of aerospace technology, the flight Mach number and flight time of the missile weapon system continue to increase, resulting in a very harsh working environment for the missile radome. ℃) has caused a greater threat to the normal work of the seeker and antenna inside the warhead. At present, the combination scheme of radome + heat shield is mostly used in China to reduce the temperature of the internal seeker and antenna working space, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/82C04B35/84C04B35/14C04B35/622
CPCC04B35/14C04B35/622C04B35/803C04B35/82C04B2235/77C04B2235/96C04B2235/9607
Inventor 尹正帅王芬佘平江张军吴广力孙晓莉
Owner 湖北三江航天江北机械工程有限公司
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