Preparation method of double-layer heat-insulating and wave-permeable composite structural member
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, and achieves the effects of excellent thermal resistance, good application prospects and reduced complexity.
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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 stir electromagnetically 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 furna...
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