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A platform for research: civil engineering, architecture and urbanism
Biomass-derived silicon carbide fiber aerogel as well as preparation method and application thereof
The invention discloses biomass-derived silicon carbide fiber aerogel as well as a preparation method and application thereof. The preparation method comprises the following steps: degreasing and cleaning kapok hollow fibers, performing high-temperature carbonization to obtain carbon micron tube fibers, performing freeze forming and freeze drying on the carbon micron tube fibers serving as basic composition units to obtain a carbon micron tube fiber aerogel blank, and finally performing high-temperature carbon thermal reduction reaction to convert carbon micron tubes into silicon carbide micron tubes in situ. The silicon carbide microtube/silicon carbide nanowire composite aerogel wave-absorbing material with silicon carbide nanowires growing in the aerogel is obtained. The material is light in weight, resistant to high temperature and high in mechanical performance, and has good electromagnetic wave absorption performance when being used as a wave-absorbing material.
本发明公开了一种生物质衍生的碳化硅纤维气凝胶及制备方法和应用。本发明将木棉中空纤维进行脱脂清洗，随后经高温碳化得到碳微米管纤维，然后以此为基本组成单元，经冷冻成型、冷冻干燥得到碳微米管纤维气凝胶坯体，最后经高温碳热还原反应将碳微米管原位转化为碳化硅微米管，得到气凝胶内部长有碳化硅纳米线的碳化硅微米管/碳化硅纳米线复合气凝胶吸波材料。该材料质量轻、耐高温、机械性能高，用于吸波材料具备良好的电磁波吸收性能。
Biomass-derived silicon carbide fiber aerogel as well as preparation method and application thereof
The invention discloses biomass-derived silicon carbide fiber aerogel as well as a preparation method and application thereof. The preparation method comprises the following steps: degreasing and cleaning kapok hollow fibers, performing high-temperature carbonization to obtain carbon micron tube fibers, performing freeze forming and freeze drying on the carbon micron tube fibers serving as basic composition units to obtain a carbon micron tube fiber aerogel blank, and finally performing high-temperature carbon thermal reduction reaction to convert carbon micron tubes into silicon carbide micron tubes in situ. The silicon carbide microtube/silicon carbide nanowire composite aerogel wave-absorbing material with silicon carbide nanowires growing in the aerogel is obtained. The material is light in weight, resistant to high temperature and high in mechanical performance, and has good electromagnetic wave absorption performance when being used as a wave-absorbing material.
本发明公开了一种生物质衍生的碳化硅纤维气凝胶及制备方法和应用。本发明将木棉中空纤维进行脱脂清洗，随后经高温碳化得到碳微米管纤维，然后以此为基本组成单元，经冷冻成型、冷冻干燥得到碳微米管纤维气凝胶坯体，最后经高温碳热还原反应将碳微米管原位转化为碳化硅微米管，得到气凝胶内部长有碳化硅纳米线的碳化硅微米管/碳化硅纳米线复合气凝胶吸波材料。该材料质量轻、耐高温、机械性能高，用于吸波材料具备良好的电磁波吸收性能。
Biomass-derived silicon carbide fiber aerogel as well as preparation method and application thereof
生物质衍生的碳化硅纤维气凝胶及制备方法和应用
ZHANG BAOJIE (author) / WEN XUDONG (author) / MA CHEN (author)
2024-09-17
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
/
D01F
Chemische Gesichtspunkte bei der Herstellung von produzierten Filamenten, Zwirnen, Fasern, Borsten oder Bändern
,
CHEMICAL FEATURES IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
/
H05K
PRINTED CIRCUITS
,
Gedruckte Schaltungen
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