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Carbon nanotube fiber toughened ceramic matrix composite material and preparation method thereof
The invention relates to a carbon nanotube fiber toughened ceramic matrix composite material and a preparation method thereof. The method comprises the following steps: providing continuous carbon nanotube fibers and carrying out hydroxylation pretreatment; soaking the hydroxylated pretreated carbon nanotube fiber in a graphene oxide aqueous solution to obtain a carbon nanotube fiber with a graphene oxide interface layer; carrying out annealing treatment to obtain carbon nanotube fibers with graphene interface layers; with polysilazane as a precursor, depositing a SiCN interface layer on the surface of the graphene interface layer of the carbon nanotube fiber through a chemical vapor deposition method to obtain the carbon nanotube fiber with a graphene/SiCN composite interface layer; and weaving the carbon nanotube fiber into a preform, and reacting the ceramic precursor with the preform by an impregnation and pyrolysis method to prepare the carbon nanotube fiber toughened ceramic-based composite material. The ceramic-based composite material prepared by the preparation method disclosed by the invention not only has relatively high thermal conductivity, but also is remarkably improved in mechanical property and oxidation resistance.
本发明涉及一种碳纳米管纤维增韧的陶瓷基复合材料及其制备方法。所述方法：提供连续碳纳米管纤维并羟基化预处理；将羟基化预处理碳纳米管纤维浸泡在氧化石墨烯水溶液中，得到具有氧化石墨烯界面层的碳纳米管纤维；再经退火处理，得到具有石墨烯界面层的碳纳米管纤维；以聚硅碳氮烷为前驱体，通过化学气相沉积法在碳纳米管纤维的石墨烯界面层表面沉积SiCN界面层，得到具有石墨烯/SiCN复合界面层的碳纳米管纤维；将其编织成预制体，通过浸渍裂解法将陶瓷前驱体与预制体反应，制得碳纳米管纤维增韧的陶瓷基复合材料。本发明制备的陶瓷基复合材料不仅具有较高的热导率，而且力学与抗氧化性能均得到显著提升。
Carbon nanotube fiber toughened ceramic matrix composite material and preparation method thereof
The invention relates to a carbon nanotube fiber toughened ceramic matrix composite material and a preparation method thereof. The method comprises the following steps: providing continuous carbon nanotube fibers and carrying out hydroxylation pretreatment; soaking the hydroxylated pretreated carbon nanotube fiber in a graphene oxide aqueous solution to obtain a carbon nanotube fiber with a graphene oxide interface layer; carrying out annealing treatment to obtain carbon nanotube fibers with graphene interface layers; with polysilazane as a precursor, depositing a SiCN interface layer on the surface of the graphene interface layer of the carbon nanotube fiber through a chemical vapor deposition method to obtain the carbon nanotube fiber with a graphene/SiCN composite interface layer; and weaving the carbon nanotube fiber into a preform, and reacting the ceramic precursor with the preform by an impregnation and pyrolysis method to prepare the carbon nanotube fiber toughened ceramic-based composite material. The ceramic-based composite material prepared by the preparation method disclosed by the invention not only has relatively high thermal conductivity, but also is remarkably improved in mechanical property and oxidation resistance.
本发明涉及一种碳纳米管纤维增韧的陶瓷基复合材料及其制备方法。所述方法：提供连续碳纳米管纤维并羟基化预处理；将羟基化预处理碳纳米管纤维浸泡在氧化石墨烯水溶液中，得到具有氧化石墨烯界面层的碳纳米管纤维；再经退火处理，得到具有石墨烯界面层的碳纳米管纤维；以聚硅碳氮烷为前驱体，通过化学气相沉积法在碳纳米管纤维的石墨烯界面层表面沉积SiCN界面层，得到具有石墨烯/SiCN复合界面层的碳纳米管纤维；将其编织成预制体，通过浸渍裂解法将陶瓷前驱体与预制体反应，制得碳纳米管纤维增韧的陶瓷基复合材料。本发明制备的陶瓷基复合材料不仅具有较高的热导率，而且力学与抗氧化性能均得到显著提升。
Carbon nanotube fiber toughened ceramic matrix composite material and preparation method thereof
一种碳纳米管纤维增韧的陶瓷基复合材料及其制备方法
YANG LIANGWEI (author) / HAO NAIRONG (author) / CHEN ZHEMING (author) / FENG SHIJIE (author) / SUN YANAN (author) / LI XIAODONG (author) / LIU WEI (author) / YU XINMIN (author)
2024-02-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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