Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of low-temperature silicon-based aerogel thermal insulation material
The invention discloses a preparation method of a low-temperature silicon-based aerogel thermal insulation material, which comprises the following steps: dissolving tetraethoxysilane in absolute ethyl alcohol, then adding a catalyst, uniformly mixing, then adding attapulgite fibers according to a mass ratio of the attapulgite fibers to the tetraethoxysilane of (0.2-1.2): 5, uniformly stirring at 40-50 DEG C to obtain liquid aerogel, injecting the liquid aerogel into a template, and carrying out heat preservation at 40-50 DEG C to obtain the low-temperature silicon-based aerogel thermal insulation material. And cooling to room temperature to obtain solid aerogel, and then carrying out supercritical drying to obtain the low-temperature silicon-based aerogel thermal insulation material. Compared with the prior art, the attapulgite fibers are introduced into the silicon-based aerogel, the heat insulation performance, mechanical strength and waterproof performance of the silicon-based aerogel are remarkably improved, the silicon-based aerogel is particularly suitable for low-temperature storage tank materials, a designed template can be printed through the 3D printing technology, the silicon-based aerogel heat insulation material in a complex shape is allowed to be prepared, and the preparation cost is reduced. The device is suitable for storage tanks in irregular shapes, waste materials can be reduced, and cost is saved.
本发明公开了一种低温硅基气凝胶绝热材料的制备方法，将正硅酸乙酯溶解于无水乙醇中，然后加入催化剂，混合均匀后，再加入凹土纤维，凹土纤维与正硅酸乙酯的质量比为(0.2‑1.2)：5，在40‑50℃下搅拌均匀，得到液态气凝胶，将其注入到模板中，待冷却至室温，得到固态气凝胶，然后进行超临界干燥，得到低温硅基气凝胶绝热材料。与现有技术相比，本发明将凹土纤维引入到硅基气凝胶中，显著提高了硅基气凝胶的绝热性能、机械强度和防水性能，特别适用于低温储罐材料，还可以通过3D打印技术打印设计好的模板，允许制备复杂形状的硅基气凝胶绝热材料的制备，适应不规则形状的储罐，并且可以减少废料，节约成本。
Preparation method of low-temperature silicon-based aerogel thermal insulation material
The invention discloses a preparation method of a low-temperature silicon-based aerogel thermal insulation material, which comprises the following steps: dissolving tetraethoxysilane in absolute ethyl alcohol, then adding a catalyst, uniformly mixing, then adding attapulgite fibers according to a mass ratio of the attapulgite fibers to the tetraethoxysilane of (0.2-1.2): 5, uniformly stirring at 40-50 DEG C to obtain liquid aerogel, injecting the liquid aerogel into a template, and carrying out heat preservation at 40-50 DEG C to obtain the low-temperature silicon-based aerogel thermal insulation material. And cooling to room temperature to obtain solid aerogel, and then carrying out supercritical drying to obtain the low-temperature silicon-based aerogel thermal insulation material. Compared with the prior art, the attapulgite fibers are introduced into the silicon-based aerogel, the heat insulation performance, mechanical strength and waterproof performance of the silicon-based aerogel are remarkably improved, the silicon-based aerogel is particularly suitable for low-temperature storage tank materials, a designed template can be printed through the 3D printing technology, the silicon-based aerogel heat insulation material in a complex shape is allowed to be prepared, and the preparation cost is reduced. The device is suitable for storage tanks in irregular shapes, waste materials can be reduced, and cost is saved.
本发明公开了一种低温硅基气凝胶绝热材料的制备方法，将正硅酸乙酯溶解于无水乙醇中，然后加入催化剂，混合均匀后，再加入凹土纤维，凹土纤维与正硅酸乙酯的质量比为(0.2‑1.2)：5，在40‑50℃下搅拌均匀，得到液态气凝胶，将其注入到模板中，待冷却至室温，得到固态气凝胶，然后进行超临界干燥，得到低温硅基气凝胶绝热材料。与现有技术相比，本发明将凹土纤维引入到硅基气凝胶中，显著提高了硅基气凝胶的绝热性能、机械强度和防水性能，特别适用于低温储罐材料，还可以通过3D打印技术打印设计好的模板，允许制备复杂形状的硅基气凝胶绝热材料的制备，适应不规则形状的储罐，并且可以减少废料，节约成本。
Preparation method of low-temperature silicon-based aerogel thermal insulation material
一种低温硅基气凝胶绝热材料的制备方法
LI JUE (Autor:in) / ZHU SHENGHUA (Autor:in) / XIAO SHUHENG (Autor:in) / CHEN HAIJUN (Autor:in) / ZHU YUEZHAO (Autor:in)
08.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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