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Large-area high-thermal-conductivity ceramic-based composite material and preparation method thereof
The invention discloses a large-area high-thermal-conductivity ceramic-based composite material and a preparation method thereof, and belongs to the technical field of composite materials and preparation. Unidirectional carbon fiber sheets are prepared on the basis of mesophase pitch-based carbon fibers, and the sheets are arranged in two directions to prepare a bidirectional carbon fiber preform; performing a multi-round precursor impregnation and pyrolysis process on the bidirectional preform by adopting an ultrahigh-temperature ceramic precursor solution to prepare an ultrahigh-temperature ceramic matrix; and on the basis, ultra-high-temperature ceramic powder slurry is brushed again, and the ultra-high-temperature ceramic coating is obtained through curing and low-temperature cracking. The composite material is high in thermal conductivity, good in high temperature resistance and high in elasticity and complete modulus.
本发明公开了一种大面积高导热陶瓷基复合材料及其制备方法，属于复合材料及制备技术领域，基于中间相沥青基碳纤维制备单向碳纤维薄片，将薄片在两个方向上排布制成双向碳纤维预制体，再采用超高温陶瓷前驱体溶液对双向预制体实施多轮次的前驱体浸渍裂解工艺，制备超高温陶瓷基体；基于此再次进行超高温陶瓷粉体浆料刷涂，经过固化和低温裂解得到超高温陶瓷涂层。该复合材料导热率高，耐高温性能好，弹性和完全模量高。
Large-area high-thermal-conductivity ceramic-based composite material and preparation method thereof
The invention discloses a large-area high-thermal-conductivity ceramic-based composite material and a preparation method thereof, and belongs to the technical field of composite materials and preparation. Unidirectional carbon fiber sheets are prepared on the basis of mesophase pitch-based carbon fibers, and the sheets are arranged in two directions to prepare a bidirectional carbon fiber preform; performing a multi-round precursor impregnation and pyrolysis process on the bidirectional preform by adopting an ultrahigh-temperature ceramic precursor solution to prepare an ultrahigh-temperature ceramic matrix; and on the basis, ultra-high-temperature ceramic powder slurry is brushed again, and the ultra-high-temperature ceramic coating is obtained through curing and low-temperature cracking. The composite material is high in thermal conductivity, good in high temperature resistance and high in elasticity and complete modulus.
本发明公开了一种大面积高导热陶瓷基复合材料及其制备方法，属于复合材料及制备技术领域，基于中间相沥青基碳纤维制备单向碳纤维薄片，将薄片在两个方向上排布制成双向碳纤维预制体，再采用超高温陶瓷前驱体溶液对双向预制体实施多轮次的前驱体浸渍裂解工艺，制备超高温陶瓷基体；基于此再次进行超高温陶瓷粉体浆料刷涂，经过固化和低温裂解得到超高温陶瓷涂层。该复合材料导热率高，耐高温性能好，弹性和完全模量高。
Large-area high-thermal-conductivity ceramic-based composite material and preparation method thereof
一种大面积高导热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)
2022-11-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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