Abstract A copper-cobalt-nickel ferrite/graphene oxide/polyaniline tri-composite was prepared by a two-step method. The prepared tri-composite was used as the absorbing agent and waterborne-polyurethane as matrix which coated on cotton fabric to prepare a flexible absorbing material. The absorbing property and electromagnetic shielding performance of the coated fabrics were studied by scanning electron microscope (SEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA), anti-electromagnetic radiation and vector network analyzer. Compared with polyaniline and graphene oxide, the microwave absorption capacity of the copper-cobalt-nickel ferrite/graphene oxide/polyaniline tri-composite was significantly enhanced, which can achieve to -33 dB at 10.8 GHz. When the content of coating agent was 40 % and thickness of the coated fabric was 2.0 mm, the shielding performance could reach -47 dB in the frequency of 300 kHz to 3.0 GHz. Meanwhile, the mechanical property was better than that of uncoated cotton fabric.

中文翻译：

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铜钴镍铁氧体/氧化石墨烯/聚苯胺复合材料的制备及其在微波吸收涂层中的应用

摘要 采用两步法制备了铜钴镍铁氧体/氧化石墨烯/聚苯胺三元复合材料。以制备的三元复合材料为吸波剂，以水性聚氨酯为基体，涂覆在棉织物上制备柔性吸波材料。通过扫描电子显微镜(SEM)、X射线衍射(XRD)、热重分析(TGA)、抗电磁辐射和矢量网络分析仪对涂层织物的吸波性能和电磁屏蔽性能进行了研究。与聚苯胺和氧化石墨烯相比，铜钴镍铁氧体/氧化石墨烯/聚苯胺三元复合材料的微波吸收能力显着增强，在10.8 GHz时可达到-33 dB。当涂层剂含量为40%，涂层织物厚度为2.0mm时，在 300 kHz 至 3.0 GHz 的频率范围内，屏蔽性能可达 -47 dB。同时，力学性能优于未涂层棉织物。