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Preparation method and application of high-temperature-resistant aerogel composite material
The invention discloses a preparation method and application of a high-temperature-resistant aerogel composite material, and belongs to the technical field of heat insulation of bridge building materials. The preparation method of the high-temperature-resistant aerogel composite material comprises the following steps: preparing a high-temperature-resistant aerogel precursor by adopting a sol-gel method; carrying out vacuum impregnation compounding on the high-temperature-resistant aerogel precursor and a fibrofelt to obtain a fibrofelt impregnated with the high-temperature-resistant aerogel precursor; and drying the fibrofelt impregnated with the high-temperature-resistant aerogel precursor by using a supercritical drying technology to obtain the high-temperature-resistant aerogel composite material. In the specific implementation process, the raw material cost is low, the operation method is simple and convenient, safety is high, the prepared multi-layer high-temperature-resistant fiber felt/aerogel composite material has the extremely low heat conductivity coefficient, the ceramic ablation-resistant material can improve the high-temperature ablation-resistant capacity of a fireproof system of the material, and the fireproof performance of the material is improved. The quartz fiber cloth and the aluminum foil can also provide certain heat insulation capacity at the same time, and can play an important role in protecting the bridge cable in case of fire.
本公开是一种耐高温气凝胶复合材料的制备方法及其应用，属于桥梁建筑材料隔热技术领域。该耐高温气凝胶复合材料的制备方法包括：采用溶胶‑凝胶法制备耐高温气凝胶前躯体；将耐高温气凝胶前躯体与纤维毡进行真空浸渍复合，得到耐高温气凝胶前躯体浸渍的纤维毡；使用超临界干燥技术对耐高温气凝胶前躯体浸渍的纤维毡进行干燥，得到耐高温气凝胶复合材料。本公开在具体实施过程中原料成本低，操作方法简便，安全性高，并且所制备的多层耐高温纤维毡/气凝胶复合材料具有极低的导热系数，陶瓷耐烧蚀材料能提高该材料防火体系的高温耐烧蚀能力，石英纤维布、铝箔同时也能提供一定的隔热能力，在发生火灾时能对桥梁拉吊索起到重要保护作用。
Preparation method and application of high-temperature-resistant aerogel composite material
The invention discloses a preparation method and application of a high-temperature-resistant aerogel composite material, and belongs to the technical field of heat insulation of bridge building materials. The preparation method of the high-temperature-resistant aerogel composite material comprises the following steps: preparing a high-temperature-resistant aerogel precursor by adopting a sol-gel method; carrying out vacuum impregnation compounding on the high-temperature-resistant aerogel precursor and a fibrofelt to obtain a fibrofelt impregnated with the high-temperature-resistant aerogel precursor; and drying the fibrofelt impregnated with the high-temperature-resistant aerogel precursor by using a supercritical drying technology to obtain the high-temperature-resistant aerogel composite material. In the specific implementation process, the raw material cost is low, the operation method is simple and convenient, safety is high, the prepared multi-layer high-temperature-resistant fiber felt/aerogel composite material has the extremely low heat conductivity coefficient, the ceramic ablation-resistant material can improve the high-temperature ablation-resistant capacity of a fireproof system of the material, and the fireproof performance of the material is improved. The quartz fiber cloth and the aluminum foil can also provide certain heat insulation capacity at the same time, and can play an important role in protecting the bridge cable in case of fire.
本公开是一种耐高温气凝胶复合材料的制备方法及其应用，属于桥梁建筑材料隔热技术领域。该耐高温气凝胶复合材料的制备方法包括：采用溶胶‑凝胶法制备耐高温气凝胶前躯体；将耐高温气凝胶前躯体与纤维毡进行真空浸渍复合，得到耐高温气凝胶前躯体浸渍的纤维毡；使用超临界干燥技术对耐高温气凝胶前躯体浸渍的纤维毡进行干燥，得到耐高温气凝胶复合材料。本公开在具体实施过程中原料成本低，操作方法简便，安全性高，并且所制备的多层耐高温纤维毡/气凝胶复合材料具有极低的导热系数，陶瓷耐烧蚀材料能提高该材料防火体系的高温耐烧蚀能力，石英纤维布、铝箔同时也能提供一定的隔热能力，在发生火灾时能对桥梁拉吊索起到重要保护作用。
Preparation method and application of high-temperature-resistant aerogel composite material
耐高温气凝胶复合材料的制备方法及其应用
ZHOU DAYONG (author) / WANG RUNJIAN (author) / GUO YONG (author) / CHEN XIAOHONG (author) / QIN LIXIANG (author) / XIE JUN (author) / WANG FUXIE (author) / LU YONGQIANG (author) / HUANG LIYUAN (author) / WU WENMING (author)
2023-08-18
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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