Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-temperature-resistant high-strength aerogel material and preparation method thereof
The invention relates to a high-temperature-resistant and high-strength aerogel material and a preparation method thereof.The method comprises the following steps that aluminum oxide nanometer powder, aluminum silicate fibers, aluminum oxide fibers and hydrochloric acid are evenly mixed with water, a mixed solution is obtained, then the mixed solution is placed at the temperature of 150-300 DEG C for a hydrothermal reaction, and gel is obtained; the gel is soaked in water; drying the soaked gel under normal pressure to obtain an aerogel material; the aerogel material is subjected to heat treatment, and the high-temperature-resistant and high-strength aerogel material is prepared. The prepared high-temperature-resistant and high-strength aerogel material is of a cage-shaped nanostructure surrounded by nanoribbons and has better mechanical strength, a supercritical drying process is not needed, and the high-temperature-resistant and high-strength aerogel material which is good in temperature resistance, high in strength, low in density and low in heat conductivity can be directly obtained through the steps of normal-pressure drying and relatively low-temperature heat treatment.
本发明涉及一种耐高温高强气凝胶材料及其制备方法，所述方法包括如下步骤：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，然后将所述混合液置于150～300℃下进行水热反应，得到凝胶；将所述凝胶在水中浸泡；将浸泡后的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、低密度且低热导率的耐高温高强气凝胶材料。
High-temperature-resistant high-strength aerogel material and preparation method thereof
The invention relates to a high-temperature-resistant and high-strength aerogel material and a preparation method thereof.The method comprises the following steps that aluminum oxide nanometer powder, aluminum silicate fibers, aluminum oxide fibers and hydrochloric acid are evenly mixed with water, a mixed solution is obtained, then the mixed solution is placed at the temperature of 150-300 DEG C for a hydrothermal reaction, and gel is obtained; the gel is soaked in water; drying the soaked gel under normal pressure to obtain an aerogel material; the aerogel material is subjected to heat treatment, and the high-temperature-resistant and high-strength aerogel material is prepared. The prepared high-temperature-resistant and high-strength aerogel material is of a cage-shaped nanostructure surrounded by nanoribbons and has better mechanical strength, a supercritical drying process is not needed, and the high-temperature-resistant and high-strength aerogel material which is good in temperature resistance, high in strength, low in density and low in heat conductivity can be directly obtained through the steps of normal-pressure drying and relatively low-temperature heat treatment.
本发明涉及一种耐高温高强气凝胶材料及其制备方法，所述方法包括如下步骤：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，然后将所述混合液置于150～300℃下进行水热反应，得到凝胶；将所述凝胶在水中浸泡；将浸泡后的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、低密度且低热导率的耐高温高强气凝胶材料。
High-temperature-resistant high-strength aerogel material and preparation method thereof
一种耐高温高强气凝胶材料及其制备方法
ZHANG ENSHUANG (Autor:in) / LIAO YALONG (Autor:in) / CHENG PIAO (Autor:in) / ZHU YUE (Autor:in) / HUANG HONGYAN (Autor:in) / ZHOU TONGHUI (Autor:in) / LI WENJING (Autor:in)
17.11.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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