A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention provides a preparation method of a three-dimensional fiber fabric-silicon dioxide aerogel composite material, which comprises the following steps: mixing tetraethoxysilane, ethanol, water and hydrochloric acid as a precursor, and dropwise adding a basic catalyst to prepare silicon dioxide sol; paving a three-dimensional glass long fiber fabric obtained by weaving glass fibers in a mold, and injecting the prepared silicon dioxide sol into the three-dimensional glass long fiber fabric until the liquid level of the silicon dioxide sol is parallel to or slightly lower than the upper surface of the three-dimensional glass long fiber fabric, so that the three-dimensional glass long fiber fabric is filled with the silicon dioxide sol; standing the three-dimensional glass long fiber fabric filled with the silicon dioxide sol to obtain fabric composite material gel, adding ethanol into a mold for solvent replacement, and performing supercritical drying to obtain the three-dimensional fiber fabric-silicon dioxide aerogel composite material. The preparation method is simple, tedious steps and materials are not needed, and the obtained three-dimensional fiber fabric-silicon dioxide aerogel composite material is better in heat insulation performance.
本发明提供一种立体纤维织物‑二氧化硅气凝胶复合材料的制备方法，包括以下步骤：以正硅酸乙酯、乙醇、水和盐酸混合作为前驱体，滴入碱性催化剂制得二氧化硅溶胶；将玻璃纤维编织得到的立体玻璃长纤维织物平铺放置于模具中，将制得的二氧化硅溶胶注入立体玻璃长纤维织物中，直至二氧化硅溶胶液面平行或略低于立体玻璃长纤维织物上表面，使立体玻璃长纤维织物中充满二氧化硅溶胶；将充满二氧化硅溶胶的立体玻璃长纤维织物静置得到织物复合材料凝胶，向模具中加入乙醇进行溶剂置换，经过超临界干燥后得到立体纤维织物‑二氧化硅气凝胶复合材料。本发明制备方法简单，无需繁琐的步骤和物料，得到的立体纤维织物‑二氧化硅气凝胶复合材料隔热性能更佳。
The invention provides a preparation method of a three-dimensional fiber fabric-silicon dioxide aerogel composite material, which comprises the following steps: mixing tetraethoxysilane, ethanol, water and hydrochloric acid as a precursor, and dropwise adding a basic catalyst to prepare silicon dioxide sol; paving a three-dimensional glass long fiber fabric obtained by weaving glass fibers in a mold, and injecting the prepared silicon dioxide sol into the three-dimensional glass long fiber fabric until the liquid level of the silicon dioxide sol is parallel to or slightly lower than the upper surface of the three-dimensional glass long fiber fabric, so that the three-dimensional glass long fiber fabric is filled with the silicon dioxide sol; standing the three-dimensional glass long fiber fabric filled with the silicon dioxide sol to obtain fabric composite material gel, adding ethanol into a mold for solvent replacement, and performing supercritical drying to obtain the three-dimensional fiber fabric-silicon dioxide aerogel composite material. The preparation method is simple, tedious steps and materials are not needed, and the obtained three-dimensional fiber fabric-silicon dioxide aerogel composite material is better in heat insulation performance.
本发明提供一种立体纤维织物‑二氧化硅气凝胶复合材料的制备方法，包括以下步骤：以正硅酸乙酯、乙醇、水和盐酸混合作为前驱体，滴入碱性催化剂制得二氧化硅溶胶；将玻璃纤维编织得到的立体玻璃长纤维织物平铺放置于模具中，将制得的二氧化硅溶胶注入立体玻璃长纤维织物中，直至二氧化硅溶胶液面平行或略低于立体玻璃长纤维织物上表面，使立体玻璃长纤维织物中充满二氧化硅溶胶；将充满二氧化硅溶胶的立体玻璃长纤维织物静置得到织物复合材料凝胶，向模具中加入乙醇进行溶剂置换，经过超临界干燥后得到立体纤维织物‑二氧化硅气凝胶复合材料。本发明制备方法简单，无需繁琐的步骤和物料，得到的立体纤维织物‑二氧化硅气凝胶复合材料隔热性能更佳。
Preparation method of three-dimensional fiber fabric-silicon dioxide aerogel composite material
一种立体纤维织物-二氧化硅气凝胶复合材料的制备方法
2023-12-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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