Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing three-dimensional ordered porous silicon carbide with double-type pore structure
The invention relates to a method for preparing three-dimensional ordered porous silicon carbide with a double-type pore structure, which comprises the following steps: uniformly dispersing SiO2 nanospheres with uniform diameter in a solvent, self-assembling to form a three-dimensional ordered template, removing the solvent, and drying; pouring a polycarbosilane precursor dispersion liquid into a container in which the template is positioned, dipping, and removing the solvent; performing crosslinking in an oxygen-containing atmosphere; performing ceramization in an inert atmosphere; performing heat treatment in an oxidizing atmosphere; and dipping and cleaning in hydrofluoric acid to obtain the target ceramic. According to the invention, the three-dimensional ordered porous SiC ceramic with a double-type pore structure and a high specific surface area can be prepared, so that the three-dimensional ordered porous material can be used in high-temperature, oxidized and corrosive environments.
一种制备具有双型孔结构的三维有序多孔碳化硅的方法，包括以下步骤：将直径均一的SiO2纳米球均匀分散于溶剂中，自组装成三维有序的模板，除去溶剂并干燥；将聚碳硅烷先驱体分散液倒入所述模板所在的容器中，浸渍，除去溶剂；在含氧气氛中进行交联；在惰性气氛中陶瓷化；在氧化性气氛中热处理；在氢氟酸中浸渍，清洗，即获目标陶瓷。本发明能制备出具有双型孔结构、高比表面积、三维有序的多孔SiC陶瓷，使三维有序多孔材料可用于高温、氧化，腐蚀环境中。
Method for preparing three-dimensional ordered porous silicon carbide with double-type pore structure
The invention relates to a method for preparing three-dimensional ordered porous silicon carbide with a double-type pore structure, which comprises the following steps: uniformly dispersing SiO2 nanospheres with uniform diameter in a solvent, self-assembling to form a three-dimensional ordered template, removing the solvent, and drying; pouring a polycarbosilane precursor dispersion liquid into a container in which the template is positioned, dipping, and removing the solvent; performing crosslinking in an oxygen-containing atmosphere; performing ceramization in an inert atmosphere; performing heat treatment in an oxidizing atmosphere; and dipping and cleaning in hydrofluoric acid to obtain the target ceramic. According to the invention, the three-dimensional ordered porous SiC ceramic with a double-type pore structure and a high specific surface area can be prepared, so that the three-dimensional ordered porous material can be used in high-temperature, oxidized and corrosive environments.
一种制备具有双型孔结构的三维有序多孔碳化硅的方法，包括以下步骤：将直径均一的SiO2纳米球均匀分散于溶剂中，自组装成三维有序的模板，除去溶剂并干燥；将聚碳硅烷先驱体分散液倒入所述模板所在的容器中，浸渍，除去溶剂；在含氧气氛中进行交联；在惰性气氛中陶瓷化；在氧化性气氛中热处理；在氢氟酸中浸渍，清洗，即获目标陶瓷。本发明能制备出具有双型孔结构、高比表面积、三维有序的多孔SiC陶瓷，使三维有序多孔材料可用于高温、氧化，腐蚀环境中。
Method for preparing three-dimensional ordered porous silicon carbide with double-type pore structure
一种制备具有双型孔结构的三维有序多孔碳化硅的方法
WANG HAO (Autor:in) / MA ZHONGLIE (Autor:in) / MA SHENG (Autor:in) / CHEN SONG (Autor:in) / CHENG HONGMEI (Autor:in)
29.11.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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