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A platform for research: civil engineering, architecture and urbanism
High-performance carbon/ceramic-based composite material and preparation method thereof
The invention relates to a high-performance carbon/ceramic-based composite material and a preparation method thereof. According to the composite material, mesophase pitch-based carbon fiber is used as a reinforcement body, and silicon-containing ceramic is used as a composite material matrix. The preparation method comprises the following steps: (1) placing mesophase pitch-based fibers of which the surfaces are impregnated with an organic carbon solution in a mold in parallel, and performing low-temperature curing to obtain a carbon fiber blank sheet; (2) stacking the carbon fiber blank sheets into a hot-pressing device, keeping the fibers axially parallel, and sequentially performing hot-pressing molding and graphitization treatment to obtain a carbon fiber preform; and (3) adopting one or more of silicon-based ceramic precursors to implement a precursor impregnation cracking process on the high-performance carbon fiber preform to prepare the high-performance carbon/ceramic-based composite material. The method has the advantages that the preparation process is simple and controllable, the period is short, and the prepared composite material is high in density, high in mechanical strength in the axial direction of the fiber, excellent in heat conductivity and good in heat dredging effect.
本发明涉及一种高性能碳/陶瓷基复合材料及其制备方法。所述复合材料以中间相沥青基碳纤维为增强体，采用含硅类的陶瓷作为复合材料基体。所述制备方法包括：(1)将表面浸渍有机碳溶液的中间相沥青基纤维平行放置在模具中，低温固化后获得碳纤维坯体薄片；(2)将碳纤维坯体薄片叠放入热压装置中，保持纤维轴向平行，依次经过热压成型和石墨化处理后获得碳纤维预制体；(3)采用硅基陶瓷前驱体中的一种或几种，对高性能碳纤维预制体实施前驱体浸渍裂解工艺，制得高性能碳/陶瓷基复合材料。本发明方法具有制备工艺简单可控，周期短，由此制得的复合材料致密度高、在纤维轴向方向力学强度高、热导率性能优异、热疏导效果好。
High-performance carbon/ceramic-based composite material and preparation method thereof
The invention relates to a high-performance carbon/ceramic-based composite material and a preparation method thereof. According to the composite material, mesophase pitch-based carbon fiber is used as a reinforcement body, and silicon-containing ceramic is used as a composite material matrix. The preparation method comprises the following steps: (1) placing mesophase pitch-based fibers of which the surfaces are impregnated with an organic carbon solution in a mold in parallel, and performing low-temperature curing to obtain a carbon fiber blank sheet; (2) stacking the carbon fiber blank sheets into a hot-pressing device, keeping the fibers axially parallel, and sequentially performing hot-pressing molding and graphitization treatment to obtain a carbon fiber preform; and (3) adopting one or more of silicon-based ceramic precursors to implement a precursor impregnation cracking process on the high-performance carbon fiber preform to prepare the high-performance carbon/ceramic-based composite material. The method has the advantages that the preparation process is simple and controllable, the period is short, and the prepared composite material is high in density, high in mechanical strength in the axial direction of the fiber, excellent in heat conductivity and good in heat dredging effect.
本发明涉及一种高性能碳/陶瓷基复合材料及其制备方法。所述复合材料以中间相沥青基碳纤维为增强体，采用含硅类的陶瓷作为复合材料基体。所述制备方法包括：(1)将表面浸渍有机碳溶液的中间相沥青基纤维平行放置在模具中，低温固化后获得碳纤维坯体薄片；(2)将碳纤维坯体薄片叠放入热压装置中，保持纤维轴向平行，依次经过热压成型和石墨化处理后获得碳纤维预制体；(3)采用硅基陶瓷前驱体中的一种或几种，对高性能碳纤维预制体实施前驱体浸渍裂解工艺，制得高性能碳/陶瓷基复合材料。本发明方法具有制备工艺简单可控，周期短，由此制得的复合材料致密度高、在纤维轴向方向力学强度高、热导率性能优异、热疏导效果好。
High-performance carbon/ceramic-based composite material and preparation method thereof
一种高性能碳/陶瓷基复合材料及其制备方法
ZHANG BAOPENG (author) / CHEN HAORAN (author) / LIU WEI (author) / SUN TONGCHEN (author) / PEI YUCHEN (author)
2022-11-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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