Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing high-temperature-resistant and high-strength aerogel material through normal-pressure drying and high-temperature-resistant and high-strength aerogel material prepared through method
The invention relates to a method for preparing a high-temperature-resistant and high-strength aerogel material through normal-pressure drying and the high-temperature-resistant and high-strength aerogel material prepared through the method. The method comprises the following steps: uniformly mixing aluminum oxide nano powder, aluminum silicate fibers, aluminum oxide fibers and hydrochloric acid with water to obtain a mixed solution, and carrying out a hydrothermal reaction on the mixed solution at 200-300 DEG C to obtain gel; 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 and high-strength aerogel material. The prepared high-temperature-resistant and high-strength aerogel material is of a cage-shaped nanostructure surrounded by nanoribbons, has better mechanical strength, and does not need a supercritical drying process; the high-temperature-resistant and high-strength aerogel material which is good in temperature resistance, high in strength, efficient, low in density and excellent in high-temperature heat insulation performance can be directly obtained through the steps of normal-pressure drying and relatively low-temperature heat treatment.
本发明涉及一种常压干燥制备耐高温高强气凝胶材料的方法及由此制得的耐高温高强气凝胶材料。所述方法包括：用水将氧化铝纳米粉、硅酸铝纤维、氧化铝纤维和盐酸混合均匀，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；将凝胶在水中浸泡，得到浸泡处理凝胶；将浸泡处理凝胶进行常压干燥，得到气凝胶材料；将气凝胶材料在空气气氛下进行热处理，制得耐高温高强气凝胶材料。本发明制得的所述耐高温高强气凝胶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高强气凝胶材料。
Method for preparing high-temperature-resistant and high-strength aerogel material through normal-pressure drying and high-temperature-resistant and high-strength aerogel material prepared through method
The invention relates to a method for preparing a high-temperature-resistant and high-strength aerogel material through normal-pressure drying and the high-temperature-resistant and high-strength aerogel material prepared through the method. The method comprises the following steps: uniformly mixing aluminum oxide nano powder, aluminum silicate fibers, aluminum oxide fibers and hydrochloric acid with water to obtain a mixed solution, and carrying out a hydrothermal reaction on the mixed solution at 200-300 DEG C to obtain gel; 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 and high-strength aerogel material. The prepared high-temperature-resistant and high-strength aerogel material is of a cage-shaped nanostructure surrounded by nanoribbons, has better mechanical strength, and does not need a supercritical drying process; the high-temperature-resistant and high-strength aerogel material which is good in temperature resistance, high in strength, efficient, low in density and excellent in high-temperature heat insulation performance can be directly obtained through the steps of normal-pressure drying and relatively low-temperature heat treatment.
本发明涉及一种常压干燥制备耐高温高强气凝胶材料的方法及由此制得的耐高温高强气凝胶材料。所述方法包括：用水将氧化铝纳米粉、硅酸铝纤维、氧化铝纤维和盐酸混合均匀，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；将凝胶在水中浸泡，得到浸泡处理凝胶；将浸泡处理凝胶进行常压干燥，得到气凝胶材料；将气凝胶材料在空气气氛下进行热处理，制得耐高温高强气凝胶材料。本发明制得的所述耐高温高强气凝胶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高强气凝胶材料。
Method for preparing high-temperature-resistant and high-strength aerogel material through normal-pressure drying and high-temperature-resistant and high-strength aerogel material prepared through method
一种常压干燥制备耐高温高强气凝胶材料的方法及由此制得的耐高温高强气凝胶材料
ZHANG ENSHUANG (Autor:in) / LI WENJING (Autor:in) / LIAO YALONG (Autor:in) / KONG DELI (Autor:in) / XU DUO (Autor:in)
17.11.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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