首页|Layered composites made of polymer derived SiOC/ZrB2 reinforced by ZrO2/SiO2 fibers with simultaneous microwave absorption and thermal insulation

Layered composites made of polymer derived SiOC/ZrB2 reinforced by ZrO2/SiO2 fibers with simultaneous microwave absorption and thermal insulation

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To simultaneously improve the microwave absorption and thermal insulation properties of the ceramic materials for stealth high-speed vehicles,layered composites made of polymer-derived SiOC/ZrB2 rein-forced by ZrO2/SiO2 fibers were reported in this work.The composites possess a continuous multilayer structure,which was fabricated via the precursor impregnation assisted by hot press curing and pyrolysis using the transparent ZrO2/SiO2 fibers and polymer-derived SiOC and nano ZrB2.The layered composites show an effective absorption band(EAB)of 4.2 GHz at a thickness of 2.9 mm and a minimum reflection loss of-59.34 dB.The exceptional electromagnetic(EM)wave attenuation capability is ascribed to the impedance matching as well as massive EM wave loss caused by the multilayers in which the nano ZrB2 provides interfacial polarization and electrical conduction loss.With a design of the multi-curvature arch structure,a remarkable reduction of radar cross section can be achieved.Besides,the layered composites exhibit good oxidation resistance and thermal insulation when exposed to the dynamic heating environ-ment,demonstrating the potential application in harsh environments used for multifunctional electro-magnetic absorbing materials.

Polymer derived ceramic(ZrO2-SiO2)fiberElectromagnetic wave absorptionBroadband radar cross section reductionThermal insulation

Yumeng Deng、Bin Ren、Yujun Jia、Qian Wang、Hejun Li

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State Key Laboratory of Solidification Processing,Shaanxi Key Laboratory of Fiber Reinforced Light Composite Materials,Northwestern Polytechnical University,Xi'an 710072,China

Henan Key Laboratory of High Performance Carbon Fiber Reinforced Composites,Institute of Carbon Matrix Composites,Henan Academy of Sciences,Zhengzhou 450046,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaFundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central UniversitiesCreative Research Foundation of Science and Technology on Thermo-Structural Composite Materials Laboratory

5223200552172104522933703102020QD0411D5000220152

2024

10.1016/j.jmst.2023.12.053

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.196(29)