A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Hydrophobic high-temperature-resistant aerogel material and preparation method thereof
The invention relates to a hydrophobic high-temperature-resistant aerogel material and a preparation method thereof. The method comprises the following steps: dissolving a silane hydrophobic reagent in an organic solvent, adding ammonia water as a catalyst, stirring, hydrolyzing at room temperature to prepare a silane hydrolysis precursor solution, impregnating an alumina aerogel matrix, and carrying out catalytic in-situ gelation reaction, normal-pressure drying and low-temperature heat treatment to obtain the alumina aerogel. The hydrophobic high-temperature-resistant aerogel material is prepared. The hydrophobic high-temperature-resistant aerogel material is obtained by surface in-situ modification of the silane particles and coating of the aerogel skeleton with the silane particles, and the material cannot be wetted by water even under vacuum impregnation, so that the problem of difficult hydrophobicity of alumina aerogel due to surface inertia is effectively solved.
本发明涉及一种疏水型耐高温气凝胶材料及其制备方法。所述方法为：将硅烷类疏水试剂溶解于有机溶剂中，加入氨水作为催化剂并进行搅拌，在室温下进行水解，制备硅烷水解前驱体溶液，然后浸渍氧化铝气凝胶基体，经过催化原位凝胶化反应及常压干燥、低温热处理步骤，制得疏水型耐高温气凝胶材料。本发明通过表面原位修饰硅烷颗粒，将硅烷颗粒包覆在气凝胶骨架上，得到疏水型耐高温气凝胶材料，该材料即使在真空浸渍下也不会被水润湿，有效解决了氧化铝气凝胶因表面惰性而疏水困难的问题。
Hydrophobic high-temperature-resistant aerogel material and preparation method thereof
The invention relates to a hydrophobic high-temperature-resistant aerogel material and a preparation method thereof. The method comprises the following steps: dissolving a silane hydrophobic reagent in an organic solvent, adding ammonia water as a catalyst, stirring, hydrolyzing at room temperature to prepare a silane hydrolysis precursor solution, impregnating an alumina aerogel matrix, and carrying out catalytic in-situ gelation reaction, normal-pressure drying and low-temperature heat treatment to obtain the alumina aerogel. The hydrophobic high-temperature-resistant aerogel material is prepared. The hydrophobic high-temperature-resistant aerogel material is obtained by surface in-situ modification of the silane particles and coating of the aerogel skeleton with the silane particles, and the material cannot be wetted by water even under vacuum impregnation, so that the problem of difficult hydrophobicity of alumina aerogel due to surface inertia is effectively solved.
本发明涉及一种疏水型耐高温气凝胶材料及其制备方法。所述方法为：将硅烷类疏水试剂溶解于有机溶剂中，加入氨水作为催化剂并进行搅拌，在室温下进行水解，制备硅烷水解前驱体溶液，然后浸渍氧化铝气凝胶基体，经过催化原位凝胶化反应及常压干燥、低温热处理步骤，制得疏水型耐高温气凝胶材料。本发明通过表面原位修饰硅烷颗粒，将硅烷颗粒包覆在气凝胶骨架上，得到疏水型耐高温气凝胶材料，该材料即使在真空浸渍下也不会被水润湿，有效解决了氧化铝气凝胶因表面惰性而疏水困难的问题。
Hydrophobic high-temperature-resistant aerogel material and preparation method thereof
一种疏水型耐高温气凝胶材料及其制备方法
ZHANG ENSHUANG (author) / LEI CHAOSHUAI (author) / ZHANG HAO (author) / LI WENJING (author) / ZHANG WANLIN (author) / LIU YUANYUAN (author) / HUANG HONGYAN (author)
2022-09-23
Patent
Electronic Resource
Chinese
| European Patent Office | 2022
Anti-dusting and high-temperature-resistant hydrophobic aerogel felt and preparation method thereof
| European Patent Office | 2024
High-temperature-resistant high-strength aerogel material and preparation method thereof
| European Patent Office | 2023
Differential hydrophobic aerogel material and preparation method thereof
| European Patent Office | 2022
High-temperature-resistant ternary aerogel composite material and preparation method thereof
| European Patent Office | 2024