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三维空心MXene-rGO-CNT复合材料的制备及其电磁屏蔽性能

李杨 李斌 李仲明 赵一霖 孔硕硕 韩佳宏

李杨, 李斌, 李仲明, 等. 三维空心MXene-rGO-CNT复合材料的制备及其电磁屏蔽性能[J]. 复合材料学报, 2024, 42(0): 1-12.
引用本文: 李杨, 李斌, 李仲明, 等. 三维空心MXene-rGO-CNT复合材料的制备及其电磁屏蔽性能[J]. 复合材料学报, 2024, 42(0): 1-12.
LI Yang, LI Bin, LI Zhongming, et al. Preparation and EMI shielding properties of three-dimensional hollow MXene-rGO-CNT composites[J]. Acta Materiae Compositae Sinica.
Citation: LI Yang, LI Bin, LI Zhongming, et al. Preparation and EMI shielding properties of three-dimensional hollow MXene-rGO-CNT composites[J]. Acta Materiae Compositae Sinica.

三维空心MXene-rGO-CNT复合材料的制备及其电磁屏蔽性能

详细信息
    通讯作者:

    李斌,博士,教授,博士生导师,研究方向为功能复合材料,柔性传感技术 E-mail: kmlb@vip.Sina.com

  • 中图分类号: TB34;TB332

Preparation and EMI shielding properties of three-dimensional hollow MXene-rGO-CNT composites

  • 摘要: 随着科学技术的不断发展,“强吸收、宽频、轻质”的电磁屏蔽材料亟需被开发。本文选用聚甲基丙烯酸甲酯(PMMA)微球和冰模板,通过牺牲模板法制备了三维空心MXene-还原氧化石墨烯(rGO)-碳纳米管(MXene-rGO-CNT)复合材料,并对复合材料的形貌结构和电磁屏蔽性能进行了表征。结果表明,丰富微孔结构的构造改善了MXene薄片团聚现象,并减轻了复合材料的密度(低于0.26 g/cm3)。同时,互连多孔结构可以引起电磁波在材料内部的多次反射和散射,增强其电磁屏蔽性能。MXene-rGO-CNT复合材料在测量的1~18 GHz的宽频率范围内表现出良好的电磁波屏蔽性能,峰值达到54 dB的高电磁屏蔽效能。这项工作为制备高效电磁屏蔽应用的纳米复合材料提供了一种便捷的方法。

     

  • 图  1  三维空心MXene-还原氧化石墨烯(rGO)-碳纳米管(MXene-rGO-CNT)复合材料的制备示意图(a)和实物数码图片(b)

    Figure  1.  Schematic diagram (a) and physical digital image (b) of the preparation of three-dimensional hollow MXene-reduced graphene oxide (rGO)-carbon nanotube (MXene-rGO-CNT) composites

    图  2  Ti3C2Tx MXene粉末(a)超声前(b)超声后的SEM图像;(c)TEM图像;(d)Ti3AlC2 MAX相前驱体和Ti3C2Tx MXene粉末的XRD图像

    Figure  2.  SEM images of Ti3C2Tx MXene powder (a) before sonication (b) after sonication; (c) TEM image ; (d) XRD images of Ti3AlC2 MAX phase precursor and Ti3C2Tx MXene powder

    图  3  不同PMMA添加比例的PMMA@MXene-GO-CNT和MXene-rGO-CNT复合材料的SEM图像(a) PMMA@MXene-GO-CNT-10,(b) PMMA@MXene-GO-CNT-5,(e) MXene-rGO-CNT-5和(f) MXene-rGO-CNT-10;PMMA@MXene-GO-CNT-10的(c) TEM图像和(d)SEM图像及其C、O和Ti元素映射图像

    Figure  3.  SEM images of PMMA@MXene-GO-CNT and MXene-rGO-CNT composites with different PMMA addition ratios (a) PMMA@MXene-GO-CNT-10, (b) PMMA@MXene-GO-CNT-5, (e) MXene-rGO-CNT-5, and (f) MXene-rGO-CNT-10; (c) TEM image and (d) SEM image of PMMA@MXene-GO-CNT-10 and its C, O, and Ti elemental mapping images

    图  4  (a) Ti3C2Tx MXene粉末、PMMA@MXene-GO-CNT和MXene-rGO-CNT复合材料的拉曼光谱;(b) PMMA@MXene-GO-CNT和MXene-rGO-CNT复合材料的XRD图像;(c) MXene-GO-CNT复合材料的热重曲线图谱

    Figure  4.  (a) Raman spectra of Ti3C2Tx MXene powder, PMMA@MXene-GO-CNT and MXene-rGO-CNT composites; (b) XRD images of PMMA@MXene-GO-CNT and MXene-rGO-CNT composites; (c) Thermogravimetric curves of MXene-GO-CNT composites graphs of MXene-GO-CNT composites

    图  5  MXene、PMMA@MXene-GO-CNT和MXene-rGO-CNT复合材料的XPS测量光谱(a);(b)(d)(g) Ti3C2Tx MXene,(c)(e)(h) PMMA@MXene-GO-CNT复合材料,(f)(i) MXene-rGO-CNT复合材料的高分辨率光谱。

    Figure  5.  XPS measurement spectra of MXene, PMMA@MXene-GO-CNT and MXene-rGO-CNT composites (a); (b) (d) (g) Ti3C2Tx MXene, (c) (e) (h) PMMA@MXene-GO-CNT composites, (f) (i) MXene-rGO-CNT composites with high-resolution spectra

    图  6  具有不同PMMA添加量的MXene-rGO-CNT和PMMA@MXene-GO-CNT复合材料的(a)总EMI SET;(b) SEA、SER和SET平均值;以及(c) T、A和R平均比例曲线和(d)与之前报道的EMI屏蔽材料的比较

    Figure  6.  (a) total EMI SET; (b) average SEA, SER, and SET; and (c) T, A, and R average ratio curves for MXene-rGO-CNT and PMMA@MXene-GO-CNT composites with different PMMA additions, and (d) comparison with previously reported EMI shielding materials.

    图  7  MXene-rGO-CNT复合材料电磁屏蔽机制示意图

    Figure  7.  Schematic diagram of electromagnetic interference shielding mechanism of MXene-rGO-CNT composites

    表  1  复合材料的命名

    Table  1.   Nomenclature of Composites Notes:polymethyl methacrylate (PMMA); Ti3C2Tx MXene (MXene); graphene oxide (GO); carbon nanotube (CNT); reduced graphene oxide (rGO)

    Sample Mass Ratio
    MXene∶PMMA
    PMMA@MXene-GO-CNT-0 1∶0
    MXene-rGO-CNT-0 1∶0
    PMMA@MXene-GO-CNT-2 1∶2
    MXene-rGO-CNT-2 1∶2
    PMMA@MXene-GO-CNT-5 1∶5
    MXene-rGO-CNT-5 1∶5
    PMMA@MXene-GO-CNT-10 1∶10
    MXene-rGO-CNT-10 1∶10
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  • 收稿日期:  2024-03-14
  • 修回日期:  2024-04-28
  • 录用日期:  2024-05-06
  • 网络出版日期:  2024-06-13

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