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High-temperature-resistant low-heat-conductivity aerogel composite material as well as preparation method and application thereof
The invention discloses a high-temperature-resistant low-thermal-conductivity aerogel composite material as well as a preparation method and application thereof, and relates to the technical field of mullite aerogel. The preparation method comprises the following steps: stirring and mixing mullite aerogel powder, a surfactant and water to obtain a mullite aerogel aqueous paste; uniformly mixing the mullite aerogel aqueous paste, potassium hexatitanate whiskers and a mullite synthetic raw material, and dehydrating to obtain reaction precursor powder; and carrying out compression molding on the reaction precursor powder, and carrying out high-temperature annealing treatment to obtain the high-temperature-resistant low-thermal-conductivity aerogel composite material. Thus, mullite synthesis raw materials inserted into a mullite aerogel matrix phase can interact during high-temperature annealing and generate a mullite binding phase, and the generated mullite binding phase is inserted and bound into the mullite aerogel matrix phase, so that the stability of the prepared mullite aerogel composite material can be greatly improved; the prepared mullite aerogel composite material has excellent heat insulation and temperature resistance.
本申请公开了一种耐高温低导热气凝胶复合材料及其制备方法和应用，涉及莫来石气凝胶技术领域。本申请制备方法包括：将莫来石气凝胶粉体、表面活性剂和水进行搅拌混合，得到莫来石气凝胶水性膏料；将莫来石气凝胶水性膏料、六钛酸钾晶须和莫来石合成原料混合均匀后脱水处理，得到反应前驱粉体；将反应前驱粉体模压成型后，高温退火处理，即得耐高温低导热气凝胶复合材料。如此，插入莫来石气凝胶基体相内的莫来石合成原料在高温退火时能够相互作用并生成莫来石结合相，由于生成的莫来石结合相插入结合到莫来石气凝胶基体相内，从而能够大幅提高制备的莫来石气凝胶复合材料的稳定性，使制备的莫来石气凝胶复合材料具备优异的隔热耐温性能。
High-temperature-resistant low-heat-conductivity aerogel composite material as well as preparation method and application thereof
The invention discloses a high-temperature-resistant low-thermal-conductivity aerogel composite material as well as a preparation method and application thereof, and relates to the technical field of mullite aerogel. The preparation method comprises the following steps: stirring and mixing mullite aerogel powder, a surfactant and water to obtain a mullite aerogel aqueous paste; uniformly mixing the mullite aerogel aqueous paste, potassium hexatitanate whiskers and a mullite synthetic raw material, and dehydrating to obtain reaction precursor powder; and carrying out compression molding on the reaction precursor powder, and carrying out high-temperature annealing treatment to obtain the high-temperature-resistant low-thermal-conductivity aerogel composite material. Thus, mullite synthesis raw materials inserted into a mullite aerogel matrix phase can interact during high-temperature annealing and generate a mullite binding phase, and the generated mullite binding phase is inserted and bound into the mullite aerogel matrix phase, so that the stability of the prepared mullite aerogel composite material can be greatly improved; the prepared mullite aerogel composite material has excellent heat insulation and temperature resistance.
本申请公开了一种耐高温低导热气凝胶复合材料及其制备方法和应用，涉及莫来石气凝胶技术领域。本申请制备方法包括：将莫来石气凝胶粉体、表面活性剂和水进行搅拌混合，得到莫来石气凝胶水性膏料；将莫来石气凝胶水性膏料、六钛酸钾晶须和莫来石合成原料混合均匀后脱水处理，得到反应前驱粉体；将反应前驱粉体模压成型后，高温退火处理，即得耐高温低导热气凝胶复合材料。如此，插入莫来石气凝胶基体相内的莫来石合成原料在高温退火时能够相互作用并生成莫来石结合相，由于生成的莫来石结合相插入结合到莫来石气凝胶基体相内，从而能够大幅提高制备的莫来石气凝胶复合材料的稳定性，使制备的莫来石气凝胶复合材料具备优异的隔热耐温性能。
High-temperature-resistant low-heat-conductivity aerogel composite material as well as preparation method and application thereof
一种耐高温低导热气凝胶复合材料及其制备方法和应用
KUMOYAMA (author) / SUN GUANGYAO (author) / LU XIANGKAI (author) / JIN PINGSHI (author)
2024-11-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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