Synthesis and electromagnetic absorption properties of polypyrrole/ BaFe12O19-Ni0.8Zn0.2Fe 2O4/multi-walled carbon nanotube composites

Yan Wang, Ying Huang, Juan Ding

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30 引用 (Scopus)

摘要

The nanocomposite of hard ferrite (BaFe12O19)/soft ferrite (Ni0.8Zn0.2 Fe2O4) was prepared by using a sol-gel method, and then the polypyrrole/nanocomposite ferrite/multi-walled carbon nanotube composites were fabricated by an in situ polymerization process. Experimental results, such as X-ray diffraction (XRD), transmission electron microscope (TEM), fourier transform infrared (FTIR) and Raman spectra analyses indicated the formation of PPy and BaFe 12O19-Ni0.8Zn0.2Fe2O 4 on the surface of carbon nanotubes. The conductivities of the composites were enhanced with the increasing of MWCNTs' content and the value reached 19.514 S/cm in the presence of 30% MWCNTs. However, the magnetic properties did not show any obvious changes. The electromagnetic properties of MWCNTs (5%) composites exceeding -10 dB ranged from 8.5 to 10.3 GHz and the maximum loss value was -25.46 dB at 8.9 GHz. The introduction of MWCNTs had an important influence on the electrical and microwave absorbing properties of the nanocomposite.

源语言英语
页(从-至)632-641
页数10
期刊Materials Science in Semiconductor Processing
26
1
DOI
出版状态已出版 - 10月 2014

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