Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of fiber-reinforced silicon carbide composite material and fiber-reinforced silicon carbide composite material
The invention provides a preparation method of a fiber-reinforced silicon carbide composite material, belonging to the technical field of fiber-reinforced silicon carbide composites.The preparation method comprises the following steps: dispersing silicon carbide micro-powder into reinforced fibers by adopting a vacuum pressure impregnation assisted gel injection molding method to realize in-situ curing, drying and degreasing a biscuit, and impregnating by adopting an organic matter, introducing a carbon source or a silicon carbide matrix into the porous biscuit, and finally siliconizing and sintering to obtain the compact fiber-reinforced silicon carbide composite material. The invention also provides the fiber-reinforced silicon carbide composite material obtained by the preparation method. According to the preparation method, a vacuum pressure impregnation method and a gel casting method are combined, uniform and in-situ curing of silicon carbide particles in reinforced fibers can be achieved, and compared with other preparation methods, the production period can be greatly shortened; and meanwhile, a carbon source or a silicon carbide matrix is introduced into the porous biscuit by adopting an organic matter impregnation and pyrolysis method, so that the residual silicon content in the composite material can be effectively controlled.
本发明提供了一种纤维增强碳化硅复合材料的制备方法，属于纤维增强碳化硅复合材料技术领域，采用真空加压浸渍辅助凝胶注模成型的方法，将碳化硅微粉分散到增强纤维内部，实现原位固化，素坯干燥脱脂后，采用有机物浸渍的方法，在多孔素坯内部引入碳源或碳化硅基体，最后渗硅烧结得到致密的纤维增强碳化硅复合材料。本发明还提供一种上述制备方法得到的纤维增强碳化硅复合材料。本发明的制备方法，将真空加压浸渍与凝胶注模成型的方法结合起来，能够实现碳化硅颗粒在增强纤维内部均匀、原位固化，相对其他制备方法，可以大大缩短生产周期；同时，采用有机物浸渍裂解的方法在多孔素坯中引入碳源或碳化硅基体，能够有效控制复合材料内部残硅量。
Preparation method of fiber-reinforced silicon carbide composite material and fiber-reinforced silicon carbide composite material
The invention provides a preparation method of a fiber-reinforced silicon carbide composite material, belonging to the technical field of fiber-reinforced silicon carbide composites.The preparation method comprises the following steps: dispersing silicon carbide micro-powder into reinforced fibers by adopting a vacuum pressure impregnation assisted gel injection molding method to realize in-situ curing, drying and degreasing a biscuit, and impregnating by adopting an organic matter, introducing a carbon source or a silicon carbide matrix into the porous biscuit, and finally siliconizing and sintering to obtain the compact fiber-reinforced silicon carbide composite material. The invention also provides the fiber-reinforced silicon carbide composite material obtained by the preparation method. According to the preparation method, a vacuum pressure impregnation method and a gel casting method are combined, uniform and in-situ curing of silicon carbide particles in reinforced fibers can be achieved, and compared with other preparation methods, the production period can be greatly shortened; and meanwhile, a carbon source or a silicon carbide matrix is introduced into the porous biscuit by adopting an organic matter impregnation and pyrolysis method, so that the residual silicon content in the composite material can be effectively controlled.
本发明提供了一种纤维增强碳化硅复合材料的制备方法，属于纤维增强碳化硅复合材料技术领域，采用真空加压浸渍辅助凝胶注模成型的方法，将碳化硅微粉分散到增强纤维内部，实现原位固化，素坯干燥脱脂后，采用有机物浸渍的方法，在多孔素坯内部引入碳源或碳化硅基体，最后渗硅烧结得到致密的纤维增强碳化硅复合材料。本发明还提供一种上述制备方法得到的纤维增强碳化硅复合材料。本发明的制备方法，将真空加压浸渍与凝胶注模成型的方法结合起来，能够实现碳化硅颗粒在增强纤维内部均匀、原位固化，相对其他制备方法，可以大大缩短生产周期；同时，采用有机物浸渍裂解的方法在多孔素坯中引入碳源或碳化硅基体，能够有效控制复合材料内部残硅量。
Preparation method of fiber-reinforced silicon carbide composite material and fiber-reinforced silicon carbide composite material
一种纤维增强碳化硅复合材料的制备方法及纤维增强碳化硅复合材料
ZHANG WEI (Autor:in) / GUO CONGHUI (Autor:in) / ZHANG GE (Autor:in) / BAO JIANXUN (Autor:in) / CUI CONGCONG (Autor:in)
26.11.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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