Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-temperature-resistant aerogel fiber composite material and preparation method thereof
The invention discloses a high-temperature-resistant aerogel fiber composite material and a preparation method thereof. The method comprises the steps: (1) carrying out prehydrolysis on tetramethyl orthosilicate to form silicon dioxide sol; (2) dissolving a zirconium source in a mixed solvent of ethanol and deionized water; (3) adding formamide into the solution obtained in the step (2), and stirring; (4) adding the silicon dioxide sol in the step (1) into the solution in the step (3) to generate a mixed sol system; (5) adding a gel initiator into the mixed sol system to form a wet gel block;(6) performing solvent replacement on the wet gel block and ethanol; (7) carrying out surface silanization on the replaced wet gel block in an ethanol/tetraethyl orthosilicate solution; (8) soaking basalt fibers into the wet gel block subjected to surface silanization, standing, aging, winding and putting into a supercritical reaction kettle; and (9) performing carbon dioxide supercritical dryingto obtain the aerogel composite fiber block.
公开了一种耐高温气凝胶纤维复合材料及其制备方法，该方法包括：（1）对正硅酸四甲酯进行预水解，形成二氧化硅溶胶；（2）将锆源溶解于乙醇去离子水的混合溶剂中；（3）将甲酰胺加入步骤（2）的溶液中搅拌；（4）将步骤（1）的二氧化硅溶胶加入步骤（3）的溶液中，生成混合溶胶体系；（5）混合溶胶体系中加入凝胶引发剂，形成湿凝胶块体；（6）将湿凝胶块体与乙醇进行溶剂置换；（7）将置换后的湿凝胶块体在乙醇/正硅酸四乙酯溶液中进行表面硅烷化；（8）在表面硅烷化后的湿凝胶块体中浸入玄武岩纤维静置老化，然后收卷置于超临界反应釜中；以及（9）采用二氧化碳超临界干燥，得到气凝胶复合纤维块体。
High-temperature-resistant aerogel fiber composite material and preparation method thereof
The invention discloses a high-temperature-resistant aerogel fiber composite material and a preparation method thereof. The method comprises the steps: (1) carrying out prehydrolysis on tetramethyl orthosilicate to form silicon dioxide sol; (2) dissolving a zirconium source in a mixed solvent of ethanol and deionized water; (3) adding formamide into the solution obtained in the step (2), and stirring; (4) adding the silicon dioxide sol in the step (1) into the solution in the step (3) to generate a mixed sol system; (5) adding a gel initiator into the mixed sol system to form a wet gel block;(6) performing solvent replacement on the wet gel block and ethanol; (7) carrying out surface silanization on the replaced wet gel block in an ethanol/tetraethyl orthosilicate solution; (8) soaking basalt fibers into the wet gel block subjected to surface silanization, standing, aging, winding and putting into a supercritical reaction kettle; and (9) performing carbon dioxide supercritical dryingto obtain the aerogel composite fiber block.
公开了一种耐高温气凝胶纤维复合材料及其制备方法，该方法包括：（1）对正硅酸四甲酯进行预水解，形成二氧化硅溶胶；（2）将锆源溶解于乙醇去离子水的混合溶剂中；（3）将甲酰胺加入步骤（2）的溶液中搅拌；（4）将步骤（1）的二氧化硅溶胶加入步骤（3）的溶液中，生成混合溶胶体系；（5）混合溶胶体系中加入凝胶引发剂，形成湿凝胶块体；（6）将湿凝胶块体与乙醇进行溶剂置换；（7）将置换后的湿凝胶块体在乙醇/正硅酸四乙酯溶液中进行表面硅烷化；（8）在表面硅烷化后的湿凝胶块体中浸入玄武岩纤维静置老化，然后收卷置于超临界反应釜中；以及（9）采用二氧化碳超临界干燥，得到气凝胶复合纤维块体。
High-temperature-resistant aerogel fiber composite material and preparation method thereof
耐高温气凝胶纤维复合材料及其制备方法
LI ZHONGLIANG (Autor:in) / GE GANG (Autor:in) / WANG XU (Autor:in) / ZHAO SHUANGLI (Autor:in) / LIU JIAN (Autor:in) / WU DAHAI (Autor:in)
30.06.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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