Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Submicron ZrC-SiC composite ceramic microsphere and preparation method thereof
The invention relates to a submicron ZrC-SiC composite ceramic microsphere and a preparation method thereof. The preparation method adopts a template method combined with a carbon thermal reduction reaction. The preparation method is technically characterized by comprising the following steps: taking phenolic resin (RF) microspheres synthesized by polycondensation of resorcinol and formaldehyde as a template; synthesizing RF (at) SiO2 (at) ZrO2 core-shell structure powder by taking the submicron resin microspheres synthesized in the step 1 as a core, taking silicon dioxide (SiO2) synthesized by a stober method as a first layer shell and taking zirconium oxide (ZrO2) prepared by hydrolyzing zirconium n-butoxide as a second layer shell; the powder prepared in the step 2 is subjected to a carbon thermal reduction reaction at a certain temperature, and the ZrC-SiC composite ceramic microspheres are obtained. According to the technical scheme provided by the invention, the submicron ZrC-SiC composite ceramic microspheres with controllable and uniform particle size, good fluidity and uniform microstructure and morphology can be prepared. The developed preparation process is stable, high in repeatability and low in cost, and batch production of the ZrC-SiC composite ceramic microspheres is facilitated.
本发明涉及一种亚微米级ZrC‑SiC复相陶瓷微球及制备方法，采用模板法结合碳热还原反应的制备方法。其技术特征在于：以间苯二酚与甲醛缩聚合成的酚醛树脂(RF)微球作为模板；再以步骤1合成的亚微米级树脂微球作为核，以stober法合成的二氧化硅(SiO2)作为第一层壳，正丁醇锆水解制得的氧化锆(ZrO2)为第二层壳，合成RF@SiO2@ZrO2核壳结构粉体；将步骤2所制备的粉体在一定温度下进行碳热还原反应，即得ZrC‑SiC复相陶瓷微球。本发明所提供的技术方案能够制备出粒径可控、粒径均一、流动性好、微结构和形貌均匀亚微米级ZrC‑SiC复相陶瓷微球。本发明发展的制备工艺稳定，可重复性高，成本低廉，利于ZrC‑SiC复相陶瓷微球的批量化生产。
Submicron ZrC-SiC composite ceramic microsphere and preparation method thereof
The invention relates to a submicron ZrC-SiC composite ceramic microsphere and a preparation method thereof. The preparation method adopts a template method combined with a carbon thermal reduction reaction. The preparation method is technically characterized by comprising the following steps: taking phenolic resin (RF) microspheres synthesized by polycondensation of resorcinol and formaldehyde as a template; synthesizing RF (at) SiO2 (at) ZrO2 core-shell structure powder by taking the submicron resin microspheres synthesized in the step 1 as a core, taking silicon dioxide (SiO2) synthesized by a stober method as a first layer shell and taking zirconium oxide (ZrO2) prepared by hydrolyzing zirconium n-butoxide as a second layer shell; the powder prepared in the step 2 is subjected to a carbon thermal reduction reaction at a certain temperature, and the ZrC-SiC composite ceramic microspheres are obtained. According to the technical scheme provided by the invention, the submicron ZrC-SiC composite ceramic microspheres with controllable and uniform particle size, good fluidity and uniform microstructure and morphology can be prepared. The developed preparation process is stable, high in repeatability and low in cost, and batch production of the ZrC-SiC composite ceramic microspheres is facilitated.
本发明涉及一种亚微米级ZrC‑SiC复相陶瓷微球及制备方法，采用模板法结合碳热还原反应的制备方法。其技术特征在于：以间苯二酚与甲醛缩聚合成的酚醛树脂(RF)微球作为模板；再以步骤1合成的亚微米级树脂微球作为核，以stober法合成的二氧化硅(SiO2)作为第一层壳，正丁醇锆水解制得的氧化锆(ZrO2)为第二层壳，合成RF@SiO2@ZrO2核壳结构粉体；将步骤2所制备的粉体在一定温度下进行碳热还原反应，即得ZrC‑SiC复相陶瓷微球。本发明所提供的技术方案能够制备出粒径可控、粒径均一、流动性好、微结构和形貌均匀亚微米级ZrC‑SiC复相陶瓷微球。本发明发展的制备工艺稳定，可重复性高，成本低廉，利于ZrC‑SiC复相陶瓷微球的批量化生产。
Submicron ZrC-SiC composite ceramic microsphere and preparation method thereof
一种亚微米级ZrC-SiC复相陶瓷微球及制备方法
CHENG LAIFEI (Autor:in) / YE FANG (Autor:in) / ZHAO KAI (Autor:in) / CUI XUEFENG (Autor:in) / ZHANG LITONG (Autor:in)
19.04.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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