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Preparation and microwave absorption properties of Ni/rGO/EP composite foam

机译：Ni / RGO / EP复合泡沫的制备和微波吸收性能

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摘要

In this study, the Ni/rGO hollow microspheres were synthesized and combined with epoxy foam to prepare structural absorbing materials. The diameter of obtained rGO hollow microspheres loaded with Ni nanoparticles was around 10 μm and the thickness of the spherical wall was about 70 nm. The Ni/rGO/EP composite foam exhibited better microwave absorption properties than that of rGO/EP and Ni/EP composite foam. The minimum reflection loss value (RL_(min)) could reach -58.23 dB at 8.4 GHz with a thickness of 2.5 mm, and the effective bandwidth with RL_(min) lower than -10 dB is 2.21 GHz ranging from 7.46 to 9.67 GHz. The porous structure of Ni/ rGO hollow microspheres and their filled epoxy foam can refract and absorb the electromagnetic waves repeatedly, which equals to extend the propagation path of microwave, thus, electromagnetic loss capacity was improved obviously.
机译：在该研究中，合成Ni / Rgo中空微球并与环氧泡沫合并以制备结构吸收材料。由Ni纳米颗粒装载的获得的RGO中空微球的直径约为10μm，球形壁的厚度约为70nm。 Ni / Rgo / EP复合泡沫表现出比RGO / EP和Ni / EP复合泡沫更好的微波吸收性能。最小反射损耗值（RL_（MIN））可以在8.4GHz的厚度为2.5 mm的8.4 GHz，以及低于-10 dB的RL_（min）的有效带宽为2.21 GHz，从7.46到9.67 GHz。 Ni / Rgo中空微球的多孔结构及其填充的环氧泡沫可以反复折射并吸收电磁波，这等于延长微波的传播路径，因此显而易见的电磁损失容量。

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  • 来源
    《Journal of Materials Research》 |2020年第16期|2106-2114|共9页
  • 作者

    Zixuan Wang; Qi Yu; Weicheng Nie; Ping Chen;

  • 作者单位

    Faculty of Materials Science and Engineering Liaoning Key Laboratory of Advanced Polymer Matrix Composites Shenyang Aerospace University Shenyang 110136 China;

    Faculty of Materials Science and Engineering Liaoning Key Laboratory of Advanced Polymer Matrix Composites Shenyang Aerospace University Shenyang 110136 China;

    Faculty of Materials Science and Engineering Liaoning Key Laboratory of Advanced Polymer Matrix Composites Shenyang Aerospace University Shenyang 110136 China;

    School of Chemical Engineering State Key Laboratory of Fine Chemicals Dalian University of Technology Dalian 116024 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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