Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention belongs to the technical field of aerogel, and particularly relates to a fiber-reinforced aluminum oxide-silicon oxide aerogel composite material and a preparation method thereof.The preparation method comprises the following steps that 1, organosilane, absolute ethyl alcohol, water and hydrochloric acid are added into a container to be subjected to acid hydrolysis, then ammonia water is added to be subjected to alkaline hydrolysis, and alkaline silicon oxide sol is obtained; (2) adding absolute ethyl alcohol and inorganic aluminum salt into a container, then adding the alkaline silicon oxide sol prepared in the step (1), and finally adding epoxypropane to obtain aluminum oxide-silicon oxide sol; and 3) shearing the fibrofelt, compounding the fibrofelt with the alumina-silica sol obtained in the step 2), and gelating to obtain the fiber-reinforced alumina-silica aerogel composite material. The fiber-reinforced alumina-silica aerogel composite material is supported and enhanced in mechanical property through the fiber-compounded alumina aerogel, and the aerogel can be prevented from being sintered at a high temperature, so that the high-temperature heat insulation performance is further improved.
本发明属于气凝胶技术领域，具体涉及一种纤维增强氧化铝‑氧化硅气凝胶复合材料及其制备方法，包括以下步骤：1)将有机硅烷、无水乙醇、水、盐酸加入容器中，进行酸水解，然后加入氨水进行碱水解，得到碱性氧化硅溶胶；2)将无水乙醇和无机铝盐加入容器中，然后加入步骤1)制备的碱性氧化硅溶胶，最后加入环氧丙烷，得到氧化铝‑氧化硅溶胶；3)将纤维毡剪切，与步骤2)的氧化铝‑氧化硅溶胶复合，待凝胶后，得到纤维增强氧化铝‑氧化硅气凝胶复合材料，本发明通过纤维复合氧化铝气凝胶为其提供支撑，增强力学性能，还可以抑制气凝胶在高温下烧结，进一步提高高温隔热性能。
The invention belongs to the technical field of aerogel, and particularly relates to a fiber-reinforced aluminum oxide-silicon oxide aerogel composite material and a preparation method thereof.The preparation method comprises the following steps that 1, organosilane, absolute ethyl alcohol, water and hydrochloric acid are added into a container to be subjected to acid hydrolysis, then ammonia water is added to be subjected to alkaline hydrolysis, and alkaline silicon oxide sol is obtained; (2) adding absolute ethyl alcohol and inorganic aluminum salt into a container, then adding the alkaline silicon oxide sol prepared in the step (1), and finally adding epoxypropane to obtain aluminum oxide-silicon oxide sol; and 3) shearing the fibrofelt, compounding the fibrofelt with the alumina-silica sol obtained in the step 2), and gelating to obtain the fiber-reinforced alumina-silica aerogel composite material. The fiber-reinforced alumina-silica aerogel composite material is supported and enhanced in mechanical property through the fiber-compounded alumina aerogel, and the aerogel can be prevented from being sintered at a high temperature, so that the high-temperature heat insulation performance is further improved.
本发明属于气凝胶技术领域，具体涉及一种纤维增强氧化铝‑氧化硅气凝胶复合材料及其制备方法，包括以下步骤：1)将有机硅烷、无水乙醇、水、盐酸加入容器中，进行酸水解，然后加入氨水进行碱水解，得到碱性氧化硅溶胶；2)将无水乙醇和无机铝盐加入容器中，然后加入步骤1)制备的碱性氧化硅溶胶，最后加入环氧丙烷，得到氧化铝‑氧化硅溶胶；3)将纤维毡剪切，与步骤2)的氧化铝‑氧化硅溶胶复合，待凝胶后，得到纤维增强氧化铝‑氧化硅气凝胶复合材料，本发明通过纤维复合氧化铝气凝胶为其提供支撑，增强力学性能，还可以抑制气凝胶在高温下烧结，进一步提高高温隔热性能。
Fiber-reinforced aluminum oxide-silicon oxide aerogel composite material and preparation method thereof
一种纤维增强氧化铝-氧化硅气凝胶复合材料及其制备方法
YU HONGGE (Autor:in)
24.09.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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