Chinese Journal of Applied Chemistry ›› 2017, Vol. 34 ›› Issue (2): 225-232.DOI: 10.11944/j.issn.1000-0518.2017.02.160138

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Microwave Absorption Properties of Fe3O4/Polyetherimide Modified Multi-walled Carbon Nanotubes Hybrids Prepared by Solvothermal Method

TANG Menga,LIU Ganga,XING Yilina,ZHANG Aibob*()   

  1. aThe First Aircraft Design and Research Institute of AVIC,Xi'an 710089,China
    bSchool of Science,Northwestern Polytechnical University,Xi'an 710072,China
  • Received:2016-04-05 Accepted:2016-07-05 Published:2017-01-18 Online:2017-01-18
  • Contact: ZHANG Aibo
  • Supported by:
    Supported by National Natural Science Foundation of China(No.51373136)

Abstract:

A nano-sized microwave absorbing Fe3O4/multi-walled carbon nanotubes(MWNTs) hybrids with dielectric and magnetic properties was fabricated by solvothermal method. The morphology and structure of Fe3O4/MWNTs hybrids were characterized by X-ray diffraction(XRD), Fourier transform infrared spectrometer(FTIR), thermal gravimetric analysis(TGA) and transmission electron-microscopy(TEM). The results show that Fe3O4/MWNTs hybrids can be dispersed homogeneously, and Fe3O4 particles exhibit crystal integrity. The electromagnetic parameters of Fe3O4/MWNTs hybrids were measured by vector network instrument. The microwave absorbing properties shows that the microwave absorption frequency of Fe3O4/MWNTs hybrids shifts to low frequency with the increase of thickness. The maximum reflection loss(RL) of Fe3O4/MWNTs hybrids is -42.9 dB at 6.16 GHz and 3.2 nm thickness, and the frequency bandwidth is 1.42 GHz for -10 dB RL over.

Key words: multi-walled carbon nanotubes, non covalent modification, polyethylenimine, electromagnetic parameter