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High-temperature-resistant broadband wave-absorbing structure composite material and preparation method thereof
The invention discloses a high-temperature-resistant broadband wave-absorbing structure composite material which comprises a composite material dielectric layer and a periodic structure layer, the composite material dielectric layer is composed of a mixed fiber preform reinforced ceramic matrix composite material and comprises a wave-transparent layer and a loss layer from outside to inside, and the periodic structure layer is made of a metal composite material. The preparation method of the composite material comprises the following steps: preparation of a fiber preform, preparation of an interface, preparation of a matrix and preparation of the periodic structure layer. The obtained composite material effectively achieves broadband absorption of electromagnetic waves, the integrity is obviously improved, the structural strength is obviously improved, and meanwhile, the physical properties such as material characteristics and heat resistance are excellent. Due to the high-impedance surface, the high-temperature-resistant broadband wave-absorbing structure composite material can selectively absorb electromagnetic waves with different frequencies through different periodic structures, and has excellent tuning capability.
本发明公开了一种耐高温宽频吸波结构复合材料，包括复合材料介质层和周期性结构层，复合材料介质层由混编纤维预制体增强陶瓷基复合材料组成，由外至内为透波层、损耗层，周期性结构层为金属复合材料。该复合材料的制备方法包括：纤维预制体制备、界面制备、基体制备、周期性结构层制备。得到的复合材料有效实现对电磁波的宽频吸收，且由于整体性明显提高，结构强度得到明显的提升，同时由于材料特性，耐热性等物理性能优异。由于具有高阻抗表面，该耐高温宽频吸波结构复合材料可通过不同的周期性结构，可实现对不同频率的电磁波的选择性吸收，具有优异的调谐能力。
High-temperature-resistant broadband wave-absorbing structure composite material and preparation method thereof
The invention discloses a high-temperature-resistant broadband wave-absorbing structure composite material which comprises a composite material dielectric layer and a periodic structure layer, the composite material dielectric layer is composed of a mixed fiber preform reinforced ceramic matrix composite material and comprises a wave-transparent layer and a loss layer from outside to inside, and the periodic structure layer is made of a metal composite material. The preparation method of the composite material comprises the following steps: preparation of a fiber preform, preparation of an interface, preparation of a matrix and preparation of the periodic structure layer. The obtained composite material effectively achieves broadband absorption of electromagnetic waves, the integrity is obviously improved, the structural strength is obviously improved, and meanwhile, the physical properties such as material characteristics and heat resistance are excellent. Due to the high-impedance surface, the high-temperature-resistant broadband wave-absorbing structure composite material can selectively absorb electromagnetic waves with different frequencies through different periodic structures, and has excellent tuning capability.
本发明公开了一种耐高温宽频吸波结构复合材料，包括复合材料介质层和周期性结构层，复合材料介质层由混编纤维预制体增强陶瓷基复合材料组成，由外至内为透波层、损耗层，周期性结构层为金属复合材料。该复合材料的制备方法包括：纤维预制体制备、界面制备、基体制备、周期性结构层制备。得到的复合材料有效实现对电磁波的宽频吸收，且由于整体性明显提高，结构强度得到明显的提升，同时由于材料特性，耐热性等物理性能优异。由于具有高阻抗表面，该耐高温宽频吸波结构复合材料可通过不同的周期性结构，可实现对不同频率的电磁波的选择性吸收，具有优异的调谐能力。
High-temperature-resistant broadband wave-absorbing structure composite material and preparation method thereof
一种耐高温宽频吸波结构复合材料及其制备方法
CHEN ZHAOFENG (author) / XIAO QIQIAO (author) / SHANG LEI (author)
2022-06-14
Patent
Electronic Resource
Chinese
IPC:
C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
,
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
/
C04B
Kalk
,
LIME
/
C25D
Verfahren für die elektrolytische oder elektrophoretische Herstellung von Überzügen
,
PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS
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