Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-temperature-resistant, heat-insulating wave-transmitting integrated aerogel composite material and preparation process thereof
The invention discloses a high-temperature-resistant, heat-insulating and wave-transmitting integrated aerogel composite material and a preparation process thereof. According to the process, silica sol is adopted as a raw material, gel is directly formed under the action of an acid catalyst and a base catalyst, and aging, supercritical CO2 drying, air heat treatment and hydrophobic modification are carried out, so that the SiO2 aerogel composite material with low heat conductivity, good wave permeability and high temperature resistance is obtained. Compared with the prior art, a one-step sol-gel method is adopted, inorganic high-temperature-resistant wave-transparent fibers are added, no dispersing agent or surfactant needs to be introduced, and finally the high-temperature-resistant, heat-insulating and wave-transmitting integrated aerogel composite material is prepared and is suitable for industrial mass production. The prepared material has the characteristics of low weight, high temperature resistance, low density, low thermal conductivity, high wave transmittance and the like.
本发明公开了一种耐高温隔热透波一体化气凝胶复合材料及其制备工艺，该工艺是采用硅溶胶为原料，在酸、碱催化剂的作用下直接形成凝胶，经过老化、超临界CO干燥、空气热处理和疏水改性，从而获得热导率低、透波性好、耐高温的SiO气凝胶复合材料。与现有技术相比，本发明采用一步溶胶‑凝胶法，并通过加入无机耐高温透波纤维，无需引入任何分散剂或表面活性剂，最终制得耐高温隔热透波一体化气凝胶复合材料，适合工业化大批量生产。而且制备的材料具备轻质、耐高温、低密度、低热导率、高透波率等特点。
High-temperature-resistant, heat-insulating wave-transmitting integrated aerogel composite material and preparation process thereof
The invention discloses a high-temperature-resistant, heat-insulating and wave-transmitting integrated aerogel composite material and a preparation process thereof. According to the process, silica sol is adopted as a raw material, gel is directly formed under the action of an acid catalyst and a base catalyst, and aging, supercritical CO2 drying, air heat treatment and hydrophobic modification are carried out, so that the SiO2 aerogel composite material with low heat conductivity, good wave permeability and high temperature resistance is obtained. Compared with the prior art, a one-step sol-gel method is adopted, inorganic high-temperature-resistant wave-transparent fibers are added, no dispersing agent or surfactant needs to be introduced, and finally the high-temperature-resistant, heat-insulating and wave-transmitting integrated aerogel composite material is prepared and is suitable for industrial mass production. The prepared material has the characteristics of low weight, high temperature resistance, low density, low thermal conductivity, high wave transmittance and the like.
本发明公开了一种耐高温隔热透波一体化气凝胶复合材料及其制备工艺，该工艺是采用硅溶胶为原料，在酸、碱催化剂的作用下直接形成凝胶，经过老化、超临界CO干燥、空气热处理和疏水改性，从而获得热导率低、透波性好、耐高温的SiO气凝胶复合材料。与现有技术相比，本发明采用一步溶胶‑凝胶法，并通过加入无机耐高温透波纤维，无需引入任何分散剂或表面活性剂，最终制得耐高温隔热透波一体化气凝胶复合材料，适合工业化大批量生产。而且制备的材料具备轻质、耐高温、低密度、低热导率、高透波率等特点。
High-temperature-resistant, heat-insulating wave-transmitting integrated aerogel composite material and preparation process thereof
耐高温隔热透波一体化气凝胶复合材料及其制备工艺
ZENG YUTING (Autor:in) / PAN JIANGBO (Autor:in) / SONG DAWEI (Autor:in)
05.05.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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High-temperature-resistant heat-insulating aerogel and preparation method thereof
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Wave-transparent heat-insulating aerogel material and preparation method thereof
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