Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-temperature-resistant ternary aerogel composite material and preparation method thereof
The invention discloses a high-temperature-resistant ternary aerogel composite material and a preparation method thereof, and belongs to the technical field of thermal insulation materials, and the preparation method comprises the following steps: preparing silica-alumina sol, preparing composite silicon nitride whiskers, pretreating, dipping for the first time, and dipping for the second time; the preparation of the composite silicon nitride whisker comprises the following steps: surface modification, primary compounding and secondary compounding. The pretreatment comprises the following steps: mixing methyltrimethoxysilane and absolute ethyl alcohol, stirring at room temperature, adding a silicon nitride fiber fabric, stirring at 60-65 DEG C, filtering, cleaning filter residues, carrying out vacuum drying, mixing with polyvinylpyrrolidone and water, stirring at room temperature, filtering, cleaning filter residues, and carrying out vacuum drying to obtain a pretreated silicon nitride fiber fabric; the high-temperature-resistant ternary aerogel composite material prepared by the invention has excellent heat insulation property, strength, toughness, high-temperature oxidation resistance, thermal shock resistance and hydrophobicity, and also has relatively small density.
本发明公开了一种耐高温三元气凝胶复合材料及其制备方法，属于隔热材料技术领域，所述制备方法由以下步骤组成：制备硅铝溶胶，制备复合氮化硅晶须，预处理，一次浸渍，二次浸渍；所述制备复合氮化硅晶须，由以下步骤组成：表面改性，一次复合，二次复合；所述预处理，将甲基三甲氧基硅烷、无水乙醇混合后，在室温下搅拌，加入氮化硅纤维织物，在60‑65℃下搅拌，过滤，清洗滤渣后真空干燥，与聚乙烯吡咯烷酮、水混合后，在室温下搅拌，过滤，清洗滤渣后真空干燥，得到预处理氮化硅纤维织物；本发明制备的耐高温三元气凝胶复合材料具有优秀的隔热性、强度、韧性、抗高温氧化性、抗热震性、疏水性，还具有较小的密度。
High-temperature-resistant ternary aerogel composite material and preparation method thereof
The invention discloses a high-temperature-resistant ternary aerogel composite material and a preparation method thereof, and belongs to the technical field of thermal insulation materials, and the preparation method comprises the following steps: preparing silica-alumina sol, preparing composite silicon nitride whiskers, pretreating, dipping for the first time, and dipping for the second time; the preparation of the composite silicon nitride whisker comprises the following steps: surface modification, primary compounding and secondary compounding. The pretreatment comprises the following steps: mixing methyltrimethoxysilane and absolute ethyl alcohol, stirring at room temperature, adding a silicon nitride fiber fabric, stirring at 60-65 DEG C, filtering, cleaning filter residues, carrying out vacuum drying, mixing with polyvinylpyrrolidone and water, stirring at room temperature, filtering, cleaning filter residues, and carrying out vacuum drying to obtain a pretreated silicon nitride fiber fabric; the high-temperature-resistant ternary aerogel composite material prepared by the invention has excellent heat insulation property, strength, toughness, high-temperature oxidation resistance, thermal shock resistance and hydrophobicity, and also has relatively small density.
本发明公开了一种耐高温三元气凝胶复合材料及其制备方法，属于隔热材料技术领域，所述制备方法由以下步骤组成：制备硅铝溶胶，制备复合氮化硅晶须，预处理，一次浸渍，二次浸渍；所述制备复合氮化硅晶须，由以下步骤组成：表面改性，一次复合，二次复合；所述预处理，将甲基三甲氧基硅烷、无水乙醇混合后，在室温下搅拌，加入氮化硅纤维织物，在60‑65℃下搅拌，过滤，清洗滤渣后真空干燥，与聚乙烯吡咯烷酮、水混合后，在室温下搅拌，过滤，清洗滤渣后真空干燥，得到预处理氮化硅纤维织物；本发明制备的耐高温三元气凝胶复合材料具有优秀的隔热性、强度、韧性、抗高温氧化性、抗热震性、疏水性，还具有较小的密度。
High-temperature-resistant ternary aerogel composite material and preparation method thereof
一种耐高温三元气凝胶复合材料及其制备方法
LI ZHANFENG (Autor:in) / WANG MENGMENG (Autor:in) / LIU HONGHUA (Autor:in) / SUN CHENGGONG (Autor:in) / LI HAN (Autor:in) / CUI TANGYIN (Autor:in) / WANG JIALIN (Autor:in) / WANG GUANGHUI (Autor:in) / YANG YANG (Autor:in) / LIU YUN (Autor:in)
20.12.2024
Patent
Elektronische Ressource
Chinesisch
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