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Ni0.6Zn0.4Fe2O4/rGO复合材料及其改性涂层的电磁吸波性能

谢艳娇 马晓 包云凤 宫新菊 官海龙 郭思瑶

谢艳娇, 马晓, 包云凤, 等. Ni0.6Zn0.4Fe2O4/rGO复合材料及其改性涂层的电磁吸波性能[J]. 复合材料学报, 2024, 42(0): 1-12.
引用本文: 谢艳娇, 马晓, 包云凤, 等. Ni0.6Zn0.4Fe2O4/rGO复合材料及其改性涂层的电磁吸波性能[J]. 复合材料学报, 2024, 42(0): 1-12.
XIE Yanjiao, MA Xiao, BAO Yunfeng, et al. Electromagnetic absorption properties of Ni0.6Zn0.4Fe2O4/rGO composites and their modified coatings[J]. Acta Materiae Compositae Sinica.
Citation: XIE Yanjiao, MA Xiao, BAO Yunfeng, et al. Electromagnetic absorption properties of Ni0.6Zn0.4Fe2O4/rGO composites and their modified coatings[J]. Acta Materiae Compositae Sinica.

Ni0.6Zn0.4Fe2O4/rGO复合材料及其改性涂层的电磁吸波性能

基金项目: 国家自然科学基金(51978354)
详细信息
    通讯作者:

    郭思瑶,博士,教授,博士生导师,研究方向为新型纳米材料在土木工程的多元化应用 E-mail: guosy@qut.edu.cn

  • 中图分类号: TU599;TB333

Electromagnetic absorption properties of Ni0.6Zn0.4Fe2O4/rGO composites and their modified coatings

Funds: National Natural Science Foundation of China (No. 51978354)
  • 摘要: 随着5G时代的到来,各类电子设备的广泛使用随之导致了严重的电磁污染问题,迫切需要开发高性能的电磁吸波材料来解决上述问题。本文采用简单的原位生长法在还原氧化石墨烯(rGO)片层上生长了镍锌铁氧体(Ni0.6Zn0.4Fe2O4)纳米粒子,通过控制rGO的掺量制备了一系列的Ni0.6Zn0.4Fe2O4/rGO (NZFO/rGO)吸波剂,NZFO/rGO-1:0.5在11.24 GHz时的最小反射损耗(RL)值为−60.72 dB,匹配厚度为2.98 mm。此外,制备的NZFO/rGO/环氧树脂吸波涂层在NZFO/rGO-1:0.5复合材料掺量为5 wt%时,涂覆在水泥基平板上的最小RL值为−42.2 dB,比纯环氧树脂涂层的最小RL值降低了90.95%;当掺量为3wt%时,有效吸收带宽(EAB)为8.88 GHz,RL值小于−5 dB时吸收带宽可达13.2 GHz。

     

  • 图  1  镍锌铁氧体(Ni0.6Zn0.4Fe2O4)和Ni0.6Zn0.4Fe2O4/还原氧化石墨烯(NZFO/rGO)复合材料的XRD图谱

    Figure  1.  XRD patterns of nickel zinc ferrite (Ni0.6Zn0.4Fe2O4) and Ni0.6Zn0.4Fe2O4/reduced graphene oxide (NZFO/rGO) composites

    图  2  (a、e) NZFO,(b、f) NZFO/rGO-1:0.2,(c、g) NZFO/rGO-1:0.5和(d、h) NZFO/rGO-1:1复合材料的SEM图片

    Figure  2.  SEM images of (a, e) NZFO, (b, f) NZFO/rGO-1:0.2, (c, g) NZFO/rGO-1:0.5, and (d, h) NZFO/rGO-1:1 composites

    图  3  所有复合材料的(a)介电常数实部$ {\varepsilon }^{\prime } $,(b)磁导率实部${\mu }^{\prime } $, (c)介电常数虚部$ {\varepsilon }^{\prime\prime } $,(d)磁导率虚部$ {\mu }^{\prime \prime } $, (e)介电损耗正切$ \text{tan}{\delta }_{\mathrm{\varepsilon }} $,(f)磁损耗正切$ \text{tan}{\delta }_{\mathrm{\mu }} $

    Figure  3.  (a) the real part of complex permittivity $ {\varepsilon }^{\prime }$, (b) the real part of complex permeability ${\mu }^{\prime } $, (c) the imaginary part of complex permittivity $ {\varepsilon }^{\prime\prime }$, (d) the imaginary part of complex permeability $ {\mu }^{\prime\prime }$, (e) the dielectric loss tangent $ \text{tan}{\delta }_{\mathrm{\varepsilon }} $, (f) the magnetic loss tangent $ \text{tan}{\delta }_{\mathrm{\mu }} $ of all composites

    图  4  (a) NZFO, (b) NZFO/rGO-1:0.2, (c) NZFO/rGO-1:0.5和(d) NZFO/rGO-1:1复合材料的RL值和三维RL图

    Figure  4.  The RL values and 3 D RL plots of (a) NZFO, (b) NZFO/rGO-1:0.2, (c) NZFO/rGO-1:0.5, and (d) NZFO/rGO-1:1 composites

    图  5  (a) NZFO, (b) NZFO/rGO-1:0.2, (c) NZFO/rGO-1:0.5和(d) NZFO/rGO-1:1复合材料的Cole-Cole曲线

    Figure  5.  The Cole-Cole curves of (a) NZFO, (b) NZFO/rGO-1:0.2, (c) NZFO/rGO-1:0.5, and (d) NZFO/rGO-1:1 composites

    图  6  (a) NZFO/rGO-1:0.5复合材料不同厚度与RL值的频率依赖关系以及对应的阻抗匹配,所有NZFO/rGO复合材料的(b)衰减常数和(c)涡流系数

    Figure  6.  (a) The frequency dependence of RL values for the NZFO/rGO-1:0.5 composite with different thicknesses and the corresponding impedance matching; (b) the attenuation constant and (c) the eddy current loss of all NZFO/ /rGO composites

    图  7  NZFO/rGO复合材料可能的电磁波吸收机制

    Figure  7.  The possible EMA mechanisms for NZFO/rGO composites

    图  8  不同改性环氧树脂涂层的水泥基板的(a)反射率和(b)有效吸收带宽

    Figure  8.  The (a) reflectivity and (b) EAB of the cement-based with different modified epoxy resin coatings

    表  1  普通硅酸盐水泥(P.O.42.5 R)的化学成分 (wt%)

    Table  1.   Chemical composition of ordinary Portland cement (P.O.42.5 R) (wt%)

    CaOSiO2Al2O3Fe3O4MgOSO3K2OP2O5Na2Oother
    55.3419.916.925.915.193.211.611.040.120.75
    下载: 导出CSV
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  • 收稿日期:  2024-04-11
  • 修回日期:  2024-05-13
  • 录用日期:  2024-05-24
  • 网络出版日期:  2024-06-22

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