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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
POSS/alumina composite ceramic aerogel fiber and preparation method thereof
The invention discloses a POSS/alumina composite ceramic aerogel fiber and a preparation method thereof. The preparation method of the composite ceramic aerogel fiber comprises the steps that a POSS monomer with a functional group and an aluminum source are mixed in an organic solution, a certain amount of catalyst is added, and after all the materials are stirred and react for a certain time, a gel fiber is prepared by sol-gel spinning; the gel fiber is subjected to solvent replacement and supercritical fluid drying to obtain the alumina composite aerogel fiber; and finally the POSS/alumina composite ceramic aerogel fiber is prepared by calcination. The alumina composite ceramic aerogel fiber is composed of alumina and a small amount of POSS, the diameter is 5-100 microns, the length is greater than 500 meters, the alumina composite ceramic aerogel fiber has a porous structure, the specific surface area is 100-600 m<2>/g, and the density is 0.1-0.3 g/cm<3>. The method is beneficial for obtaining the high-temperature-resistant continuous ceramic aerogel fiber, and the fiber has the properties of ultra lightness, heat resistance, super heat insulation and the like.
本发明公开了一种POSS/氧化铝复合陶瓷气凝胶纤维及其制备方法。该复合陶瓷气凝胶的制备方法包括：将带有功能基团的POSS单体与铝源在有机溶液中混合，加入一定量的催化剂，搅拌反应一定时间后，通过溶胶‑凝胶纺丝制备凝胶纤维，凝胶纤维经溶剂置换、超临界流体干燥后获得氧化铝复合气凝胶纤维，最后煅烧制备得到POSS/氧化铝复合陶瓷气凝胶纤维。该氧化铝复合陶瓷气凝胶纤维由氧化铝和少量POSS组成，直径5～100微米，长度大于500米，具有多孔结构，比表面积100～600m/g，密度为0.1～0.3g/cm。该方法有利于获得耐高温连续陶瓷气凝胶纤维，具有超轻、耐热、超级隔热保温等性能。
POSS/alumina composite ceramic aerogel fiber and preparation method thereof
The invention discloses a POSS/alumina composite ceramic aerogel fiber and a preparation method thereof. The preparation method of the composite ceramic aerogel fiber comprises the steps that a POSS monomer with a functional group and an aluminum source are mixed in an organic solution, a certain amount of catalyst is added, and after all the materials are stirred and react for a certain time, a gel fiber is prepared by sol-gel spinning; the gel fiber is subjected to solvent replacement and supercritical fluid drying to obtain the alumina composite aerogel fiber; and finally the POSS/alumina composite ceramic aerogel fiber is prepared by calcination. The alumina composite ceramic aerogel fiber is composed of alumina and a small amount of POSS, the diameter is 5-100 microns, the length is greater than 500 meters, the alumina composite ceramic aerogel fiber has a porous structure, the specific surface area is 100-600 m<2>/g, and the density is 0.1-0.3 g/cm<3>. The method is beneficial for obtaining the high-temperature-resistant continuous ceramic aerogel fiber, and the fiber has the properties of ultra lightness, heat resistance, super heat insulation and the like.
本发明公开了一种POSS/氧化铝复合陶瓷气凝胶纤维及其制备方法。该复合陶瓷气凝胶的制备方法包括：将带有功能基团的POSS单体与铝源在有机溶液中混合，加入一定量的催化剂，搅拌反应一定时间后，通过溶胶‑凝胶纺丝制备凝胶纤维，凝胶纤维经溶剂置换、超临界流体干燥后获得氧化铝复合气凝胶纤维，最后煅烧制备得到POSS/氧化铝复合陶瓷气凝胶纤维。该氧化铝复合陶瓷气凝胶纤维由氧化铝和少量POSS组成，直径5～100微米，长度大于500米，具有多孔结构，比表面积100～600m/g，密度为0.1～0.3g/cm。该方法有利于获得耐高温连续陶瓷气凝胶纤维，具有超轻、耐热、超级隔热保温等性能。
POSS/alumina composite ceramic aerogel fiber and preparation method thereof
POSS/氧化铝复合陶瓷气凝胶纤维及其制备方法
MA XIAOMIN (Autor:in) / ZHANG CHUNSU (Autor:in) / LI FUPING (Autor:in) / CHEN WEIDONG (Autor:in) / ZHANG YINGFENG (Autor:in) / WU NANCHUN (Autor:in)
25.08.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
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
/
B01J
Chemische oder physikalische Verfahren, z.B. Katalyse oder Kolloidchemie
,
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
/
C04B
Kalk
,
LIME
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