Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (04): 33-39.doi: 10.13475/j.fzxb.20210500107

• Fiber Materials • Previous Articles     Next Articles

Electromagnetic wave absorption performance of loofah-based carbon materials

YE Wei1,2, YU Jin1,2, LONG Xiaoyun1,2(), SUN Qilong1,2, MA Yan1,2   

  1. 1. National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Protection, Nantong University, Nantong, Jiangsu 226019, China
    2. School of Textiles and Clothing, Nantong University, Nantong, Jiangsu 226019, China
  • Received:2021-05-06 Revised:2021-09-27 Online:2022-04-15 Published:2022-04-20
  • Contact: LONG Xiaoyun E-mail:lxy1988@ntu.edu.cn

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Abstract:

In order to develop a novel fibrous electromagnetic wave absorbing material, natural loofah was used as the base material of a carbon mesh, with Fe3O4 loaded onto the surface and internal pores of the loofah fiber through in-situ hybridization. The material properties were characterized and analyzed by scanning electron microscope, X-ray photoelectron spectrometer, vibrating sample magnetometer hysteresis loop analysis and electromagnetic parameter analysis. Results show that loofah-based carbon material preserves the special hollow structure, Fe3O4 particles are uniformly distributed on the fiber surface and internal pores, and the synergy between dielectric loss, magnetic loss and fiber structure enhances the electromagnetic wave loss of the material. When the solubility of FeCl3 is 2 mol/L and the processing temperature is 700 ℃, in the range of 2-18 GHz, and the sample has a thickness of 3 mm, the electromagnetic wave loss reaches -24.37 dB at 9.97 GHz, and at 7.33-10.33 GHz the electromagnetic wave loss in the frequency band is less than -10 dB. The loofah fiber can be prepared into electromagnetic wave absorbing material with excellent performance through suitable carbonization and Fe3O4 loading process.

Key words: composite material, loofah fiber, Fe3O4, dielectric loss, magnetic loss, electromagnetic wave absorption, in-situ hybridization technology

CLC Number: 

  • TS101

Fig.1

Surface and cross-section SEM images and EDS spectra of loofah fiber. (a) Surface of S0(×1 000); (b) Surface of S2 (×1 000); (c) Cross-section of S2(×3 000); (d) EDS spectra of S0; (e) EDS spectra of S2"

Fig.2

XPS spectra of S0 (a), S2(b) samples and O element (c), Fe element(d) binding energy analysis of S2 sample"

Fig.3

Magnetic hysteresis loop of samples at room temperature"

Fig.4

Electromagnetic parameters of sample at different treatment conditions. (a) ε'; (b) ε″; (c) μ'; (d) μ″; (e) Dielectric loss tangent; (f) Magnetic loss tangent"

Fig.5

Electromagnetic wave loss curve of sample in range of 2-18 GHz"

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