Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Porous carbon-rich SiOC (N) nanosphere with excellent wave-absorbing property and preparation method of porous carbon-rich SiOC (N) nanosphere
The invention discloses a porous carbon-rich SiOC (N) nanosphere with excellent wave-absorbing performance and a preparation method thereof, the preparation method comprises the following steps: S1, dropwise adding a SiOC ceramic precursor into a hydrolysate, and stirring to obtain a SiOC ceramic precursor mixed solution; s2, adding an acid catalyst into the mixed solution, and stirring to hydrolyze the SiOC ceramic precursor; s3, after hydrolysis, continuing to add an alkali catalyst, stirring, and carrying out polycondensation to form a SiOC nanosphere particle mixed solution; s4, adding a carbon phase precursor into the SiOC nanosphere particle mixed solution, stirring, centrifuging and drying to prepare a porous carbon-rich SiOC (N) nanosphere precursor; s5, under the protective atmosphere, the porous carbon-rich SiOC (N) nanosphere precursor is subjected to pyrolysis, and porous carbon-rich SiOC (N) nanospheres are obtained; the weight ratio of the SiOC ceramic precursor to the acid catalyst to the base catalyst to the carbon phase precursor is (5-15): (0.5-2.0): (1-10): (2-6).
本发明公开一种具有优异吸波性能的多孔富碳SiOC(N)纳米球及其制备方法，S1、将SiOC陶瓷先驱体滴加于水解液中，搅拌，获得SiOC陶瓷先驱体混合液；S2、向混合液中加酸催化剂，搅拌，使SiOC陶瓷先驱体水解；S3、水解后继续加碱催化剂，搅拌，缩聚形成SiOC纳米球颗粒混合溶液；S4、向SiOC纳米球颗粒混合溶液中加入碳相先驱体，搅拌，离心，烘干，制得多孔富碳SiOC(N)纳米球先驱体；S5、在保护气氛下，将多孔富碳SiOC(N)纳米球先驱体裂解，获得多孔富碳SiOC(N)纳米球；SiOC陶瓷先驱体、酸催化剂、碱催化剂与碳相先驱体之间的重量比为(5～15)：(0.5～2.0)：(1～10)：(2～6)。
Porous carbon-rich SiOC (N) nanosphere with excellent wave-absorbing property and preparation method of porous carbon-rich SiOC (N) nanosphere
The invention discloses a porous carbon-rich SiOC (N) nanosphere with excellent wave-absorbing performance and a preparation method thereof, the preparation method comprises the following steps: S1, dropwise adding a SiOC ceramic precursor into a hydrolysate, and stirring to obtain a SiOC ceramic precursor mixed solution; s2, adding an acid catalyst into the mixed solution, and stirring to hydrolyze the SiOC ceramic precursor; s3, after hydrolysis, continuing to add an alkali catalyst, stirring, and carrying out polycondensation to form a SiOC nanosphere particle mixed solution; s4, adding a carbon phase precursor into the SiOC nanosphere particle mixed solution, stirring, centrifuging and drying to prepare a porous carbon-rich SiOC (N) nanosphere precursor; s5, under the protective atmosphere, the porous carbon-rich SiOC (N) nanosphere precursor is subjected to pyrolysis, and porous carbon-rich SiOC (N) nanospheres are obtained; the weight ratio of the SiOC ceramic precursor to the acid catalyst to the base catalyst to the carbon phase precursor is (5-15): (0.5-2.0): (1-10): (2-6).
本发明公开一种具有优异吸波性能的多孔富碳SiOC(N)纳米球及其制备方法，S1、将SiOC陶瓷先驱体滴加于水解液中，搅拌，获得SiOC陶瓷先驱体混合液；S2、向混合液中加酸催化剂，搅拌，使SiOC陶瓷先驱体水解；S3、水解后继续加碱催化剂，搅拌，缩聚形成SiOC纳米球颗粒混合溶液；S4、向SiOC纳米球颗粒混合溶液中加入碳相先驱体，搅拌，离心，烘干，制得多孔富碳SiOC(N)纳米球先驱体；S5、在保护气氛下，将多孔富碳SiOC(N)纳米球先驱体裂解，获得多孔富碳SiOC(N)纳米球；SiOC陶瓷先驱体、酸催化剂、碱催化剂与碳相先驱体之间的重量比为(5～15)：(0.5～2.0)：(1～10)：(2～6)。
Porous carbon-rich SiOC (N) nanosphere with excellent wave-absorbing property and preparation method of porous carbon-rich SiOC (N) nanosphere
一种具有优异吸波性能的多孔富碳SiOC(N)纳米球及其制备方法
QIAN JUNJIE (Autor:in) / MA DANDAN (Autor:in) / ZHOU XIAOLING (Autor:in) / LIAO HUOMING (Autor:in) / ZOU YUNXUAN (Autor:in) / JIANG JINGLIN (Autor:in) / WANG YONGQING (Autor:in)
16.07.2024
Patent
Elektronische Ressource
Chinesisch
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