项目名称: 纳米氧化铜/磁性金属/碳纤维复合材料原位生长及其吸波机理研究
项目编号: No.51302318
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 一般工业技术
项目作者: 曾俊
作者单位: 中国人民武装警察部队工程大学
项目金额: 25万元
中文摘要: 本项目拟采用化学沉积和热氧化方法,合成具有吸波能力强、吸收频带宽、质量轻和厚度薄等综合吸波性能的纳米CuO/磁性金属/碳纤维复合材料。通过XRD、SEM、EDS、TEM以及SQUID等现代分析手段,考察纳米CuO/磁性金属/碳纤维复合材料的结构、形貌及磁性,研究其原位生长机理;重点研究磁性金属的引入对纳米CuO/碳纤维复合材料的成分、结构及其吸波性能和稳定性的影响,结合能带原理、极化原理以及磁性金属的动态磁化等理论,深入探讨纳米CuO/磁性金属/碳纤维复合材料的吸波原理;并通过对其改性以提高介电损耗和磁损耗的匹配度,增强复合材料的吸波性能。这不仅对热氧化方法制备纳米金属氧化物/磁性金属/碳纤维复合材料,开发纳米CuO新型吸波材料和发展多元复合吸波材料体系有一定的基础研究意义,而且对切实解决电磁干扰问题和增强军事隐身能力具有重要的应用价值。
中文关键词: 微波吸收性能;磁损耗;多层结构;多孔镍;纳米氧化铜
英文摘要: In this project, the nano-CuO/magnetic metal/carbon fiber composites will be synthesized by a simple chemical deposition and thermal oxidation method. The composites are expected to exhibit strong absorption, wide-frequency, lightweight and ultrathin microwave absorption properties. In order to investigate the morphology, the structure and magnetic properties, the composites will be characterized using X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive spectrometer (EDS), transmission electron microscope (TEM), and superconductivity quantum interference device (SQUID). Furthermore, the possible in-situ growth mechanism and microwave absorption mechanism of the composites will be discussed. In particular, on the basis of the investigation of the influence on the composition and structure of the magnetic metal, the microwave absorption mechanism of the nano-CuO/magnetic metal/carbon fiber composites is discussed. Finally, it is believed that the match of dielectric loss and magnetic loss of the nano-CuO/magnetic metal/carbon fiber composites will lead to the excellent microwave absorption properties. It is important to synthesize nano-metallic oxide/magnetic metal/carbon fiber multiple composites by thermal oxidation for properly solving the electromagnetic interference (EMI) problem an
英文关键词: Microwave absorption properties;Magnetic dissipation;Multilayer structure;Porous nickel;Nano-cupric oxide