Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-temperature-resistant multiphase ceramic aerogel and preparation method thereof
The invention provides a method for preparing high-temperature-resistant multiphase ceramic aerogel. The method comprises the following steps: preparing ceramic precursor wet gel from a main ceramic precursor and an ultrahigh-temperature ceramic precursor; sequentially carrying out solvent replacement and drying treatment to obtain ceramic precursor aerogel; and carrying out high-temperature cracking to obtain the high-temperature-resistant composite ceramic aerogel. The invention also provides the high-temperature-resistant composite ceramic aerogel prepared by the method. The method disclosed by the invention has the advantages of good mixing uniformity, easiness in quality control, no pulverization in high-temperature cracking, no collapse of a framework, easiness in preparation and the like, is simple and controllable, mild in preparation condition, good in stability and convenient for large-scale preparation, can be used for preparing the multiphase ceramic aerogel material with a nano-porous structure, and has a better application prospect compared with a traditional multiphase ceramic material. The material has the advantages of high temperature resistance, low density, high porosity, large specific surface area and the like, and is applied to the field of thermal protection as a high-temperature-resistant thermal insulation material.
本发明提供了一种制备耐高温复相陶瓷气凝胶的方法，包括：利用主陶瓷前驱体和超高温陶瓷前驱体制得陶瓷前驱体湿凝胶；依次进行溶剂置换和干燥处理，得到陶瓷前驱体气凝胶；通过高温裂解得到耐高温复相陶瓷气凝胶。本发明还提供了所述方法制得的耐高温复相陶瓷气凝胶。本发明方法具有混合均匀性好，质量控制容易，高温裂解不粉化，骨架不坍塌，容易制备等优点，而且简单可控，制备条件温和，稳定性好，便于大规模制备，可以制备出具有纳米多孔结构的复相陶瓷气凝胶材料，相对于传统的复相陶瓷材料，该材料兼具耐高温性能和密度低、孔隙率高且比表面积大等优点，作为耐高温防隔热材料应用于热防护领域。
High-temperature-resistant multiphase ceramic aerogel and preparation method thereof
The invention provides a method for preparing high-temperature-resistant multiphase ceramic aerogel. The method comprises the following steps: preparing ceramic precursor wet gel from a main ceramic precursor and an ultrahigh-temperature ceramic precursor; sequentially carrying out solvent replacement and drying treatment to obtain ceramic precursor aerogel; and carrying out high-temperature cracking to obtain the high-temperature-resistant composite ceramic aerogel. The invention also provides the high-temperature-resistant composite ceramic aerogel prepared by the method. The method disclosed by the invention has the advantages of good mixing uniformity, easiness in quality control, no pulverization in high-temperature cracking, no collapse of a framework, easiness in preparation and the like, is simple and controllable, mild in preparation condition, good in stability and convenient for large-scale preparation, can be used for preparing the multiphase ceramic aerogel material with a nano-porous structure, and has a better application prospect compared with a traditional multiphase ceramic material. The material has the advantages of high temperature resistance, low density, high porosity, large specific surface area and the like, and is applied to the field of thermal protection as a high-temperature-resistant thermal insulation material.
本发明提供了一种制备耐高温复相陶瓷气凝胶的方法，包括：利用主陶瓷前驱体和超高温陶瓷前驱体制得陶瓷前驱体湿凝胶；依次进行溶剂置换和干燥处理，得到陶瓷前驱体气凝胶；通过高温裂解得到耐高温复相陶瓷气凝胶。本发明还提供了所述方法制得的耐高温复相陶瓷气凝胶。本发明方法具有混合均匀性好，质量控制容易，高温裂解不粉化，骨架不坍塌，容易制备等优点，而且简单可控，制备条件温和，稳定性好，便于大规模制备，可以制备出具有纳米多孔结构的复相陶瓷气凝胶材料，相对于传统的复相陶瓷材料，该材料兼具耐高温性能和密度低、孔隙率高且比表面积大等优点，作为耐高温防隔热材料应用于热防护领域。
High-temperature-resistant multiphase ceramic aerogel and preparation method thereof
一种耐高温复相陶瓷气凝胶及其制备方法
HE LIJUAN (Autor:in) / ZHANG ENSHUANG (Autor:in) / LI WENJING (Autor:in)
10.01.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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