Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-temperature-resistant high-strength aerogel thermal insulation material and preparation method thereof
The invention relates to a high-temperature-resistant high-strength aerogel thermal insulation material and a preparation method thereof. The method comprises the following steps: uniformly mixing aluminum oxide nano powder, aluminum silicate fibers, aluminum oxide fibers and an acidic solution with water to obtain a mixed solution, and then placing the mixed solution at 200-300 DEG C for hydrothermal reaction to obtain gel; the acid solution is a hydrochloric acid and/or sulfuric acid solution; soaking the gel in water to obtain soaked gel; drying the soaked gel at normal pressure to obtain an aerogel material; and carrying out heat treatment on the aerogel material in an air atmosphere to prepare the high-temperature-resistant high-strength aerogel thermal insulation material. The prepared aerogel heat insulation material is of a cage-shaped nano structure surrounded by the nanobelt, has better mechanical strength, does not need a supercritical drying process, and can directly obtain the high-temperature-resistant aerogel heat insulation material which is good in temperature resistance, high in strength, efficient, low in density and excellent in high-temperature heat insulation performance through normal-pressure drying and relatively low-temperature heat treatment steps.
本发明涉及一种耐高温高强度气凝胶隔热材料及其制备方法。所述方法包括：用水将氧化铝纳米粉、硅酸铝纤维、氧化铝纤维和酸性溶液混合均匀，得到混合液，然后将混合液置于200～300℃下进行水热反应，得到凝胶；酸性溶液为盐酸和/或硫酸溶液；将凝胶在水中浸泡，得到浸泡处理凝胶；将浸泡处理凝胶常压干燥，得到气凝胶材料；将气凝胶材料在空气气氛下热处理，制得耐高温高强度气凝胶隔热材料。本发明制得的气凝胶隔热材料为纳米带环绕的笼状纳米结构，具有更佳的力学强度，无需超临界干燥过程，通过常压干燥和相对低温的热处理步骤即可直接得到耐温性佳、高强、高效、低密度且高温隔热性能优异的耐高温的气凝胶隔热材料。
High-temperature-resistant high-strength aerogel thermal insulation material and preparation method thereof
The invention relates to a high-temperature-resistant high-strength aerogel thermal insulation material and a preparation method thereof. The method comprises the following steps: uniformly mixing aluminum oxide nano powder, aluminum silicate fibers, aluminum oxide fibers and an acidic solution with water to obtain a mixed solution, and then placing the mixed solution at 200-300 DEG C for hydrothermal reaction to obtain gel; the acid solution is a hydrochloric acid and/or sulfuric acid solution; soaking the gel in water to obtain soaked gel; drying the soaked gel at normal pressure to obtain an aerogel material; and carrying out heat treatment on the aerogel material in an air atmosphere to prepare the high-temperature-resistant high-strength aerogel thermal insulation material. The prepared aerogel heat insulation material is of a cage-shaped nano structure surrounded by the nanobelt, has better mechanical strength, does not need a supercritical drying process, and can directly obtain the high-temperature-resistant aerogel heat insulation material which is good in temperature resistance, high in strength, efficient, low in density and excellent in high-temperature heat insulation performance through normal-pressure drying and relatively low-temperature heat treatment steps.
本发明涉及一种耐高温高强度气凝胶隔热材料及其制备方法。所述方法包括：用水将氧化铝纳米粉、硅酸铝纤维、氧化铝纤维和酸性溶液混合均匀，得到混合液，然后将混合液置于200～300℃下进行水热反应，得到凝胶；酸性溶液为盐酸和/或硫酸溶液；将凝胶在水中浸泡，得到浸泡处理凝胶；将浸泡处理凝胶常压干燥，得到气凝胶材料；将气凝胶材料在空气气氛下热处理，制得耐高温高强度气凝胶隔热材料。本发明制得的气凝胶隔热材料为纳米带环绕的笼状纳米结构，具有更佳的力学强度，无需超临界干燥过程，通过常压干燥和相对低温的热处理步骤即可直接得到耐温性佳、高强、高效、低密度且高温隔热性能优异的耐高温的气凝胶隔热材料。
High-temperature-resistant high-strength aerogel thermal insulation material and preparation method thereof
一种耐高温高强度气凝胶隔热材料及其制备方法
ZHANG ENSHUANG (Autor:in) / LIAO YALONG (Autor:in) / XU DUO (Autor:in) / CHENG PIAO (Autor:in) / KONG DELI (Autor:in) / LI WENJING (Autor:in)
21.11.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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