Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of aluminum oxide-silicon oxide aerogel composite material
The invention belongs to the field of thermal insulation materials, and discloses a preparation method of an aluminum oxide-silicon oxide aerogel composite material, wherein after preparing silicon dioxide gel is prepared, the surface of the silicon dioxide gel is continuously impregnated with an aluminum sol mixed solution, and compounding is carried out by using a method of coating the silicon dioxide aerogel with aluminum oxide aerogel; Si-OH and Si-OR bonds (wherein R is alkyl) on the surface of the silicon dioxide gel can react with -Al-O- bonds to form a silicon and aluminum aerogel composite network structure, a silicon dioxide aerogel network framework can play a role in supporting an aluminum oxide aerogel framework, the situation that the aluminum oxide aerogel structure collapses at the high temperature at present is reduced, and meanwhile, the aluminum oxide aerogel skeleton also improves the mechanical property of the silicon dioxide aerogel. Besides, the aluminum oxide aerogel is arranged on the outermost layer of the composite gel, approximately forms a gradient structure and can well protect the silicon dioxide aerogel network structure at high temperature, and the aluminum oxide aerogel and the silicon dioxide aerogel cooperate with each other to jointly improve the heat insulation and mechanical properties of the composite material.
本发明属于隔热保温材料领域，公开一种氧化铝‑氧化硅气凝胶复合材料的制备方法，在制备得到二氧化硅凝胶之后，在其表面继续浸渍铝溶胶混合液，利用氧化铝气凝胶包覆二氧化硅气凝胶的方法进行复合，二氧化硅凝胶表面的Si‑OH及Si‑0R键（其中R为烷基）能够与‑Al‑O‑键反应形成硅、铝气凝胶复合网络结构，二氧化硅气凝胶网络骨架能够起到支撑氧化铝气凝胶骨架的作用，降低目前高温下氧化铝气凝胶结构坍塌情况的发生，同时氧化铝气凝胶骨架也提高了二氧化硅气凝胶的力学性能增强。此外，氧化铝气凝胶在复合凝胶的最外层，近似形成梯度结构，高温下能够对二氧化硅气凝胶网络结构起到很好的保护作用，两者相互配合共同提高复合材料的隔热和力学性能。
Preparation method of aluminum oxide-silicon oxide aerogel composite material
The invention belongs to the field of thermal insulation materials, and discloses a preparation method of an aluminum oxide-silicon oxide aerogel composite material, wherein after preparing silicon dioxide gel is prepared, the surface of the silicon dioxide gel is continuously impregnated with an aluminum sol mixed solution, and compounding is carried out by using a method of coating the silicon dioxide aerogel with aluminum oxide aerogel; Si-OH and Si-OR bonds (wherein R is alkyl) on the surface of the silicon dioxide gel can react with -Al-O- bonds to form a silicon and aluminum aerogel composite network structure, a silicon dioxide aerogel network framework can play a role in supporting an aluminum oxide aerogel framework, the situation that the aluminum oxide aerogel structure collapses at the high temperature at present is reduced, and meanwhile, the aluminum oxide aerogel skeleton also improves the mechanical property of the silicon dioxide aerogel. Besides, the aluminum oxide aerogel is arranged on the outermost layer of the composite gel, approximately forms a gradient structure and can well protect the silicon dioxide aerogel network structure at high temperature, and the aluminum oxide aerogel and the silicon dioxide aerogel cooperate with each other to jointly improve the heat insulation and mechanical properties of the composite material.
本发明属于隔热保温材料领域，公开一种氧化铝‑氧化硅气凝胶复合材料的制备方法，在制备得到二氧化硅凝胶之后，在其表面继续浸渍铝溶胶混合液，利用氧化铝气凝胶包覆二氧化硅气凝胶的方法进行复合，二氧化硅凝胶表面的Si‑OH及Si‑0R键（其中R为烷基）能够与‑Al‑O‑键反应形成硅、铝气凝胶复合网络结构，二氧化硅气凝胶网络骨架能够起到支撑氧化铝气凝胶骨架的作用，降低目前高温下氧化铝气凝胶结构坍塌情况的发生，同时氧化铝气凝胶骨架也提高了二氧化硅气凝胶的力学性能增强。此外，氧化铝气凝胶在复合凝胶的最外层，近似形成梯度结构，高温下能够对二氧化硅气凝胶网络结构起到很好的保护作用，两者相互配合共同提高复合材料的隔热和力学性能。
Preparation method of aluminum oxide-silicon oxide aerogel composite material
一种氧化铝-氧化硅气凝胶复合材料的制备方法
ZHANG JICHENG (Autor:in) / DONG HUINA (Autor:in) / MA JINMIAO (Autor:in) / LIN XIANGCHENG (Autor:in) / PAN GUANGZHEN (Autor:in) / HE FENGXIA (Autor:in) / ZHAO YAN (Autor:in) / LIU XIZONG (Autor:in) / ZHANG DONGSHENG (Autor:in)
30.11.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C01B
NON-METALLIC ELEMENTS
,
Nichtmetallische Elemente
/
B01J
Chemische oder physikalische Verfahren, z.B. Katalyse oder Kolloidchemie
,
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
/
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
C04B
Kalk
,
LIME
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