A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Mullite fiber composite Al2O3-SiO2 aerogel and preparation method thereof
The invention belongs to the field of aerogel composite thermal insulation materials, and particularly relates to mullite fiber composite Al2O3-SiO2 aerogel and a preparation method thereof. The preparation method comprises the following steps: preparing Al2O3-SiO2 multi-component sol, carrying out composite molding, carrying out gel aging, carrying out supercritical drying and carrying out high-temperature heat treatment. The preparation method comprises the following steps: preparing a sol solution from a silicon source and an aluminum source by adopting a process of respectively dissolving sol, mixing and gelling two components, carrying out gelling and supercritical fluid CO2 drying on mullite fibers for saturated absorption of Al2O3-SiO2 aerogel sol under a microwave condition, and carrying out high-temperature heat treatment in a muffle furnace, so as to finally form the mullite fiber with excellent thermal insulation performance, high mechanical strength and high thermal conductivity. And the highest temperature resistance of the enhanced Al2O3-SiO2 aerogel thermal insulation material can reach 1200 DEG C.
本发明属于气凝胶复合保温材料领域，具体涉及一种莫来石纤维复合Al2O3‑SiO2气凝胶及其制备方法。所述制备方法包括：配制Al2O3‑SiO2多组分溶胶、复合成型、凝胶老化、超临界干燥和高温热处理。本发明是以硅源、铝源采用双组分分别溶胶后混合后凝胶工艺，制备出溶胶液，将饱和吸收Al2O3‑SiO2气凝胶溶胶的莫来石纤维于微波条件下凝胶、超临界流体CO2干燥，再在马沸炉中进行高温热处理，最终形成具有保温性能优良、机械强度高，最高耐温性能达1200℃的增强型Al2O3‑SiO2气凝胶保温材料。
Mullite fiber composite Al2O3-SiO2 aerogel and preparation method thereof
The invention belongs to the field of aerogel composite thermal insulation materials, and particularly relates to mullite fiber composite Al2O3-SiO2 aerogel and a preparation method thereof. The preparation method comprises the following steps: preparing Al2O3-SiO2 multi-component sol, carrying out composite molding, carrying out gel aging, carrying out supercritical drying and carrying out high-temperature heat treatment. The preparation method comprises the following steps: preparing a sol solution from a silicon source and an aluminum source by adopting a process of respectively dissolving sol, mixing and gelling two components, carrying out gelling and supercritical fluid CO2 drying on mullite fibers for saturated absorption of Al2O3-SiO2 aerogel sol under a microwave condition, and carrying out high-temperature heat treatment in a muffle furnace, so as to finally form the mullite fiber with excellent thermal insulation performance, high mechanical strength and high thermal conductivity. And the highest temperature resistance of the enhanced Al2O3-SiO2 aerogel thermal insulation material can reach 1200 DEG C.
本发明属于气凝胶复合保温材料领域，具体涉及一种莫来石纤维复合Al2O3‑SiO2气凝胶及其制备方法。所述制备方法包括：配制Al2O3‑SiO2多组分溶胶、复合成型、凝胶老化、超临界干燥和高温热处理。本发明是以硅源、铝源采用双组分分别溶胶后混合后凝胶工艺，制备出溶胶液，将饱和吸收Al2O3‑SiO2气凝胶溶胶的莫来石纤维于微波条件下凝胶、超临界流体CO2干燥，再在马沸炉中进行高温热处理，最终形成具有保温性能优良、机械强度高，最高耐温性能达1200℃的增强型Al2O3‑SiO2气凝胶保温材料。
Mullite fiber composite Al2O3-SiO2 aerogel and preparation method thereof
一种莫来石纤维复合Al2O3-SiO2气凝胶及其制备方法
SU FENG (author) / LI JIANPING (author) / XING HOUPU (author) / YU ZHIJUAN (author) / TIAN YINGCHAO (author)
2024-05-28
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2015
Preparation method of Al2O3-SiO2 aerogel composite material
| European Patent Office | 2021
Mullite fiber composite Si-O-C aerogel and preparation method thereof
| European Patent Office | 2024
| European Patent Office | 2024
Composite fiber-reinforced hydrophobic SiO2 aerogel and preparation method thereof
| European Patent Office | 2016