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A platform for research: civil engineering, architecture and urbanism
Novel zero-convection high-heat-insulation SiBN fiber aerogel and preparation method thereof
The invention discloses a preparation method of novel zero-convection high-heat-insulation SiBN fiber aerogel, which comprises the following specific steps: synthesizing hollow precursor fiber and hollow porous aerogel, and calcining step by step to obtain the novel zero-convection high-heat-insulation SiBN fiber aerogel, according to the prepared novel zero-convection high-heat-insulation SiBN fiber aerogel, nanofibers are fully utilized as a supporting framework of the aerogel, meanwhile, uniform and compact nanopores and multistage fractal pore channels are formed through bonding of hollow fiber composite gel hollow microspheres, heat radiation and heat conduction are reduced, and the heat insulation performance of the fibers is improved; the mechanical property is improved after step-by-step calcination, the hollow porous fiber aerogel with high heat insulation property is obtained, and the hollow porous fiber aerogel has wide application prospects in the fields of high-temperature heat insulation, high-temperature oxidation resistance, radar wave transmission and the like.
本发明公开了一种新型零对流高隔热的SiBN纤维气凝胶制备方法，具体步骤为：通过合成中空前驱体纤维与空心多孔气凝胶，经分步煅烧后获得了新型零对流高隔热的SiBN纤维气凝胶；本发明制备的新型零对流高隔热的SiBN纤维气凝胶，充分利用纳米纤维作为气凝胶的支撑骨架，同时通过中空纤维复合凝胶空心微球，粘接形成均匀致密的纳米孔及多级分形孔道，降低热辐射和热传导，提高纤维的隔热性能，分步煅烧后提高力学性能，获得高隔热性的空心多孔纤维气凝胶，在高温隔热、高温抗氧化、雷达透波等领域有广阔的应用前景。
Novel zero-convection high-heat-insulation SiBN fiber aerogel and preparation method thereof
The invention discloses a preparation method of novel zero-convection high-heat-insulation SiBN fiber aerogel, which comprises the following specific steps: synthesizing hollow precursor fiber and hollow porous aerogel, and calcining step by step to obtain the novel zero-convection high-heat-insulation SiBN fiber aerogel, according to the prepared novel zero-convection high-heat-insulation SiBN fiber aerogel, nanofibers are fully utilized as a supporting framework of the aerogel, meanwhile, uniform and compact nanopores and multistage fractal pore channels are formed through bonding of hollow fiber composite gel hollow microspheres, heat radiation and heat conduction are reduced, and the heat insulation performance of the fibers is improved; the mechanical property is improved after step-by-step calcination, the hollow porous fiber aerogel with high heat insulation property is obtained, and the hollow porous fiber aerogel has wide application prospects in the fields of high-temperature heat insulation, high-temperature oxidation resistance, radar wave transmission and the like.
本发明公开了一种新型零对流高隔热的SiBN纤维气凝胶制备方法，具体步骤为：通过合成中空前驱体纤维与空心多孔气凝胶，经分步煅烧后获得了新型零对流高隔热的SiBN纤维气凝胶；本发明制备的新型零对流高隔热的SiBN纤维气凝胶，充分利用纳米纤维作为气凝胶的支撑骨架，同时通过中空纤维复合凝胶空心微球，粘接形成均匀致密的纳米孔及多级分形孔道，降低热辐射和热传导，提高纤维的隔热性能，分步煅烧后提高力学性能，获得高隔热性的空心多孔纤维气凝胶，在高温隔热、高温抗氧化、雷达透波等领域有广阔的应用前景。
Novel zero-convection high-heat-insulation SiBN fiber aerogel and preparation method thereof
一种新型零对流高隔热的SiBN纤维气凝胶及其制备方法
LIU ZHAOWEI (author) / HAO JUNQING (author) / ZHAO KANG (author) / HUANG YANHUI (author) / TANG YUFEI (author) / ZHOU QINGSHAN (author) / ZHANG MINHAO (author)
2024-05-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B01J
Chemische oder physikalische Verfahren, z.B. Katalyse oder Kolloidchemie
,
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
/
D01D
MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
,
Mechanische Verfahren oder Vorrichtungen für die Herstellung von produzierten Filamenten, Zwirnen, Fasern, Borsten oder Bändern
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