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Silicon carbide fiber as well as preparation method and application thereof
The invention discloses a silicon carbide fiber and a preparation method and application thereof, and belongs to the technical field of silicon carbide materials. The preparation method of the silicon carbide fiber comprises the following steps: mixing ethanol and water, adjusting the pH value of a mixed solution to 2-3, and carrying out hydrolysis reaction to obtain a mixed solution A; adding a carbon source, a silicon source and a magnetic metal catalyst into the mixed solution A, uniformly stirring to obtain a mixed solution B, adjusting the pH value of the mixed solution B to 9-10, and carrying out condensation polymerization to prepare a precursor; performing compression molding on the precursor to obtain a precursor blank, covering the precursor blank with a wave-transparent material, and performing microwave sintering at 1000-1200 DEG C to obtain the silicon carbide fiber. The method can effectively shorten the sintering time and reduce the sintering temperature. The excessive consumption of energy is reduced, and meanwhile, the silicon carbide fiber with uniform aperture size, large length-diameter ratio and large fiber quantity is prepared.
本发明公开了一种碳化硅纤维及其制备方法和应用，属于碳化硅材料技术领域。碳化硅纤维的制备方法包括以下步骤：将乙醇和水混合后，调节混合溶液的pH为2‑3，发生水解反应得到混合溶液A；向混合溶液A中加入碳源、硅源、磁性金属催化剂搅拌均匀后得到混合溶液B，调节混合溶液B的pH为9‑10发生缩聚反应制备得到前驱体；将前驱体压制成型后得到前驱体坯体，用透波材料覆盖前驱体坯体后，在1000‑1200℃下进行微波烧结，得到碳化硅纤维。本发明能够有效的缩短烧结时间、降低烧结温度。减少能源的过度消耗，同时制备出孔径尺寸均匀、长径比和纤维量大的碳化硅纤维。
Silicon carbide fiber as well as preparation method and application thereof
The invention discloses a silicon carbide fiber and a preparation method and application thereof, and belongs to the technical field of silicon carbide materials. The preparation method of the silicon carbide fiber comprises the following steps: mixing ethanol and water, adjusting the pH value of a mixed solution to 2-3, and carrying out hydrolysis reaction to obtain a mixed solution A; adding a carbon source, a silicon source and a magnetic metal catalyst into the mixed solution A, uniformly stirring to obtain a mixed solution B, adjusting the pH value of the mixed solution B to 9-10, and carrying out condensation polymerization to prepare a precursor; performing compression molding on the precursor to obtain a precursor blank, covering the precursor blank with a wave-transparent material, and performing microwave sintering at 1000-1200 DEG C to obtain the silicon carbide fiber. The method can effectively shorten the sintering time and reduce the sintering temperature. The excessive consumption of energy is reduced, and meanwhile, the silicon carbide fiber with uniform aperture size, large length-diameter ratio and large fiber quantity is prepared.
本发明公开了一种碳化硅纤维及其制备方法和应用，属于碳化硅材料技术领域。碳化硅纤维的制备方法包括以下步骤：将乙醇和水混合后，调节混合溶液的pH为2‑3，发生水解反应得到混合溶液A；向混合溶液A中加入碳源、硅源、磁性金属催化剂搅拌均匀后得到混合溶液B，调节混合溶液B的pH为9‑10发生缩聚反应制备得到前驱体；将前驱体压制成型后得到前驱体坯体，用透波材料覆盖前驱体坯体后，在1000‑1200℃下进行微波烧结，得到碳化硅纤维。本发明能够有效的缩短烧结时间、降低烧结温度。减少能源的过度消耗，同时制备出孔径尺寸均匀、长径比和纤维量大的碳化硅纤维。
Silicon carbide fiber as well as preparation method and application thereof
一种碳化硅纤维及其制备方法和应用
ZHANG RUI (author) / ZHANG XINYUE (author) / GUAN LI (author) / ZHANG JIAXIN (author) / GAO QIANCHENG (author) / LI MINGLIANG (author) / ZHU YUJIE (author) / WEN LANCHAO (author) / DUAN YUXUAN (author) / LIU ZIHAO (author)
2024-04-12
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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