Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of Al2O3-SiO2 aerogel composite material
The invention discloses a preparation method of an Al2O3-SiO2 aerogel composite material. The preparation method comprises the following steps: (1) fully dispersing and mixing nano silicon dioxide powder, micron silicon dioxide powder, an infrared opacifying agent and short fibers to obtain a mixture A; (2) performing compression molding on the mixture A to obtain a silicon dioxide composite material; (3) preparing aluminum sol from an aluminum source, a chelating agent, a solvent, water and a catalyst; (4) dipping the silicon dioxide composite material by adopting aluminum oxide sol to obtain an Al2O3-SiO2 wet gel material; and (5) carrying out drying treatment, so as to obtain the Al2O3-SiO2 aerogel composite material. The Al2O3-SiO2 aerogel composite material prepared by the method has good mechanical properties, can well inhibit high-temperature infrared radiation heat conduction, and avoids large shrinkage of alumina aerogel at a high temperature.
本发明公开了一种Al2O3‑SiO2气凝胶复合材料的制备方法，包括以下步骤：（1）将纳米二氧化硅粉、微米二氧化硅粉、红外遮光剂和短纤维充分分散混合，得到混合料A；（2）将混合料A压制成型，得到二氧化硅复合材料；（3）将铝源、螯合剂、溶剂、水和催化剂配制得到铝溶胶；（4）采用氧化铝溶胶对二氧化硅复合材料进行浸渍，得到Al2O3‑SiO2湿凝胶材料；（5）干燥处理，得到Al2O3‑SiO2气凝胶复合材料。采用该方法制备得到的Al2O3‑SiO2气凝胶复合材料，具有较好的力学性能，可以较好地抑制高温红外辐射热传导，避免高温下氧化铝气凝胶产生较大的收缩。
Preparation method of Al2O3-SiO2 aerogel composite material
The invention discloses a preparation method of an Al2O3-SiO2 aerogel composite material. The preparation method comprises the following steps: (1) fully dispersing and mixing nano silicon dioxide powder, micron silicon dioxide powder, an infrared opacifying agent and short fibers to obtain a mixture A; (2) performing compression molding on the mixture A to obtain a silicon dioxide composite material; (3) preparing aluminum sol from an aluminum source, a chelating agent, a solvent, water and a catalyst; (4) dipping the silicon dioxide composite material by adopting aluminum oxide sol to obtain an Al2O3-SiO2 wet gel material; and (5) carrying out drying treatment, so as to obtain the Al2O3-SiO2 aerogel composite material. The Al2O3-SiO2 aerogel composite material prepared by the method has good mechanical properties, can well inhibit high-temperature infrared radiation heat conduction, and avoids large shrinkage of alumina aerogel at a high temperature.
本发明公开了一种Al2O3‑SiO2气凝胶复合材料的制备方法，包括以下步骤：（1）将纳米二氧化硅粉、微米二氧化硅粉、红外遮光剂和短纤维充分分散混合，得到混合料A；（2）将混合料A压制成型，得到二氧化硅复合材料；（3）将铝源、螯合剂、溶剂、水和催化剂配制得到铝溶胶；（4）采用氧化铝溶胶对二氧化硅复合材料进行浸渍，得到Al2O3‑SiO2湿凝胶材料；（5）干燥处理，得到Al2O3‑SiO2气凝胶复合材料。采用该方法制备得到的Al2O3‑SiO2气凝胶复合材料，具有较好的力学性能，可以较好地抑制高温红外辐射热传导，避免高温下氧化铝气凝胶产生较大的收缩。
Preparation method of Al2O3-SiO2 aerogel composite material
一种Al2O3-SiO2气凝胶复合材料的制备方法
ZHANG JICHENG (Autor:in) / DONG HUINA (Autor:in) / ZHANG DONGSHENG (Autor:in) / MA JINMIAO (Autor:in) / LIN XIANGCHENG (Autor:in) / ZHANG MANMAN (Autor:in) / LIU XIZONG (Autor:in) / ZHAO YAN (Autor:in) / PAN GUANGZHEN (Autor:in)
31.12.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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