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The invention relates to a high-temperature broadband wave-absorbing Al2O3f reinforced ceramic-based composite material and an integrated preparation method, which are used for solving the technical problem of narrow high-temperature wave-absorbing frequency band of the existing ceramic-based composite material. According to the technical scheme, the broadband wave-absorbing Al2O3f/SiOC composite material is obtained by optimally designing a wave-absorbing structure unit in an Al2O3f fiber preform through HFSS software, preparing conductive carbon fibers with a certain periodic structure on Al2O3f fiber cloth by adopting a manual sewing process, and then preparing a ceramic matrix in the Al2O3f fiber preform with the periodic structure by adopting a precursor infiltration pyrolysis method (PIP method). According to the method, periodic structure design and content regulation and control can be directly carried out on the wave-absorbing unit of the composite material, a wave-absorbing agent does not need to be chemically synthesized, the preparation process is simple, the period is short, and composite material fibers are not damaged. By regulating and controlling the periodic wave-absorbing unit and the wave-absorbing agent of the Al2O3f reinforced composite material, the broadband wave-absorbing performance of the composite material can be effectively improved, and the Al2O3f reinforced composite material has the potential to become an excellent broadband wave-absorbing type ceramic matrix composite material.
本发明涉及一种高温宽频吸波型Al2O3f增强陶瓷基复合材料及一体化制备方法，用于解决目前陶瓷基复合材料高温吸波频带窄的技术问题。技术方案是通过HFSS软件优化设计Al2O3f纤维预制体中的吸波结构单元，采用手工缝合工艺在Al2O3f纤维布上制备具有一定周期结构的导电碳纤维，然后采用先驱体浸渍裂解法(PIP法)在具有周期结构的Al2O3f纤维预制体中制备陶瓷基体，得到宽频吸波Al2O3f/SiOC复合材料。该方法能够直接对复合材料的吸波单元进行周期性结构设计及含量调控，无需化学合成吸波剂，制备工艺简单，周期短，对复合材料纤维无损伤。通过对Al2O3f增强复合材料的周期性吸波单元和吸波剂进行调控，能够有效改善复合材料的宽频吸波性能，有潜力成为优异的宽频吸波型陶瓷基复合材料。
The invention relates to a high-temperature broadband wave-absorbing Al2O3f reinforced ceramic-based composite material and an integrated preparation method, which are used for solving the technical problem of narrow high-temperature wave-absorbing frequency band of the existing ceramic-based composite material. According to the technical scheme, the broadband wave-absorbing Al2O3f/SiOC composite material is obtained by optimally designing a wave-absorbing structure unit in an Al2O3f fiber preform through HFSS software, preparing conductive carbon fibers with a certain periodic structure on Al2O3f fiber cloth by adopting a manual sewing process, and then preparing a ceramic matrix in the Al2O3f fiber preform with the periodic structure by adopting a precursor infiltration pyrolysis method (PIP method). According to the method, periodic structure design and content regulation and control can be directly carried out on the wave-absorbing unit of the composite material, a wave-absorbing agent does not need to be chemically synthesized, the preparation process is simple, the period is short, and composite material fibers are not damaged. By regulating and controlling the periodic wave-absorbing unit and the wave-absorbing agent of the Al2O3f reinforced composite material, the broadband wave-absorbing performance of the composite material can be effectively improved, and the Al2O3f reinforced composite material has the potential to become an excellent broadband wave-absorbing type ceramic matrix composite material.
本发明涉及一种高温宽频吸波型Al2O3f增强陶瓷基复合材料及一体化制备方法，用于解决目前陶瓷基复合材料高温吸波频带窄的技术问题。技术方案是通过HFSS软件优化设计Al2O3f纤维预制体中的吸波结构单元，采用手工缝合工艺在Al2O3f纤维布上制备具有一定周期结构的导电碳纤维，然后采用先驱体浸渍裂解法(PIP法)在具有周期结构的Al2O3f纤维预制体中制备陶瓷基体，得到宽频吸波Al2O3f/SiOC复合材料。该方法能够直接对复合材料的吸波单元进行周期性结构设计及含量调控，无需化学合成吸波剂，制备工艺简单，周期短，对复合材料纤维无损伤。通过对Al2O3f增强复合材料的周期性吸波单元和吸波剂进行调控，能够有效改善复合材料的宽频吸波性能，有潜力成为优异的宽频吸波型陶瓷基复合材料。
High-temperature broadband wave-absorbing Al2O3f reinforced ceramic-based composite material and integrated preparation method
高温宽频吸波型Al2O3f增强陶瓷基复合材料及一体化制备方法
2022-03-08
Patent
Electronic Resource
Chinese
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