TY - JOUR
T1 - Synthesis and electromagnetic absorption properties of polypyrrole/ BaFe12O19-Ni0.8Zn0.2Fe 2O4/multi-walled carbon nanotube composites
AU - Wang, Yan
AU - Huang, Ying
AU - Ding, Juan
PY - 2014/10
Y1 - 2014/10
N2 - 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.
AB - 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.
KW - Conductivity
KW - Electromagnetic properties
KW - Multi-wall carbon nanotube
KW - Nanocomposite ferrite
KW - Polypyrrole
UR - http://www.scopus.com/inward/record.url?scp=84903136845&partnerID=8YFLogxK
U2 - 10.1016/j.mssp.2014.06.001
DO - 10.1016/j.mssp.2014.06.001
M3 - 文章
AN - SCOPUS:84903136845
SN - 1369-8001
VL - 26
SP - 632
EP - 641
JO - Materials Science in Semiconductor Processing
JF - Materials Science in Semiconductor Processing
IS - 1
ER -