Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing silicon dioxide aerogel felt by soaking method
The invention discloses a method for preparing a silicon dioxide aerogel felt by a soaking method, and belongs to the technical field of aerogel felts. The preparation method comprises the following steps: dispersing prepared gel at a high speed, sanding, uniformly dispersing in an ethanol solution, soaking the fibrofelt in an ethanol soaking pool to absorb the ethanol solution containing the silicon dioxide aerogel, drying in a tunnel furnace, and rolling to obtain the silicon dioxide aerogel felt. The preparation method has the beneficial effects that the hydrophobized gel is used as a raw material, the fibrofelt is infiltrated under the assistance of the organic solvent, and the purpose of rapidly preparing the hydrophobized silicon dioxide aerogel felt can be achieved under the condition that modification is not needed; in the preparation process of the silicon dioxide aerogel felt, solvent exchange is not needed, additional surface modification is not needed, supercritical drying is replaced with normal-pressure drying, the drying difficulty is lowered, the drying time is shortened, the preparation period is greatly shortened, the production efficiency is improved, and the preparation cost is reduced.
本发明公开了一种浸泡法制备二氧化硅气凝胶毡的方法，属于气凝胶毡技术领域。本发明通过将制备好的凝胶经过高速分散、砂磨后均匀分散于乙醇溶液中，纤维毡经过乙醇浸泡池即可吸收含有二氧化硅气凝胶的乙醇溶液，经过隧道炉干燥后收卷即可得到二氧化硅气凝胶毡。本发明的有益效果：本发明利用已经疏水化的凝胶作为原料，在有机溶剂辅佐下浸润纤维毡，不需要改性的情况下可以达到快速制备疏水化二氧化硅气凝胶毡的目的；本发明在制备二氧化硅气凝胶毡的过程中不需要进行溶剂交换，也不需要额外进行表面改性，并且使用常压干燥取代超临界干燥，降低了干燥难度及时间，大幅度降低了制备周期，提高了生产效率，降低了制备成本。
Method for preparing silicon dioxide aerogel felt by soaking method
The invention discloses a method for preparing a silicon dioxide aerogel felt by a soaking method, and belongs to the technical field of aerogel felts. The preparation method comprises the following steps: dispersing prepared gel at a high speed, sanding, uniformly dispersing in an ethanol solution, soaking the fibrofelt in an ethanol soaking pool to absorb the ethanol solution containing the silicon dioxide aerogel, drying in a tunnel furnace, and rolling to obtain the silicon dioxide aerogel felt. The preparation method has the beneficial effects that the hydrophobized gel is used as a raw material, the fibrofelt is infiltrated under the assistance of the organic solvent, and the purpose of rapidly preparing the hydrophobized silicon dioxide aerogel felt can be achieved under the condition that modification is not needed; in the preparation process of the silicon dioxide aerogel felt, solvent exchange is not needed, additional surface modification is not needed, supercritical drying is replaced with normal-pressure drying, the drying difficulty is lowered, the drying time is shortened, the preparation period is greatly shortened, the production efficiency is improved, and the preparation cost is reduced.
本发明公开了一种浸泡法制备二氧化硅气凝胶毡的方法，属于气凝胶毡技术领域。本发明通过将制备好的凝胶经过高速分散、砂磨后均匀分散于乙醇溶液中，纤维毡经过乙醇浸泡池即可吸收含有二氧化硅气凝胶的乙醇溶液，经过隧道炉干燥后收卷即可得到二氧化硅气凝胶毡。本发明的有益效果：本发明利用已经疏水化的凝胶作为原料，在有机溶剂辅佐下浸润纤维毡，不需要改性的情况下可以达到快速制备疏水化二氧化硅气凝胶毡的目的；本发明在制备二氧化硅气凝胶毡的过程中不需要进行溶剂交换，也不需要额外进行表面改性，并且使用常压干燥取代超临界干燥，降低了干燥难度及时间，大幅度降低了制备周期，提高了生产效率，降低了制备成本。
Method for preparing silicon dioxide aerogel felt by soaking method
一种浸泡法制备二氧化硅气凝胶毡的方法
ZHANG SHANGQUAN (Autor:in) / DENG LI (Autor:in)
12.04.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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