Electromagnetic interference shielding characteristics of carbon nanofiber-polymer composites.
Electromagnetic interference (EMI) shielding characteristics of carbon nanofiber-polystyrene composites were investigated in the frequency range of 12.4-18 GHz (Ku-band). It was observed that the shielding effectiveness of such composites was frequency independent, and increased with increasing carbon nanofiber loading within Ku-band. The experimental data exhibited that the shielding effectiveness of the polymer composite containing 20 wt% carbon nanofibers could reach more than 36 dB in the measured frequency region, indicating such composites can be applied to the potential EMI shielding materials. In addition, the results showed that the contribution of reflection to the EMI shielding effectiveness was much larger than that of absorption, implying the primary EMI shielding mechanism of such composites was reflection of electromagnetic radiation within Ku-band.
Yang
Yonglai
Y
Charles L. Brown Department of Electrical and Computer Engineering, University of Virginia, Charlottesville, Virginia 22904, USA.
Guptal
Mool C
MC
Dudley
Kenneth L
KL
Lawrence
Roland W
RW
D004307:Dose-Response Relationship, Radiation; D004574:Electromagnetic Fields; D004867:Equipment Design; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D008872:Microwaves; D053761:Nanocomposites / Q000737:chemistry* / Q000528:radiation effects* / Q000648:ultrastructure; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000528:radiation effects* / Q000648:ultrastructure; D010316:Particle Size; D011108:Polymers / Q000737:chemistry; D011137:Polystyrenes / Q000737:chemistry / Q000528:radiation effects; D011829:Radiation Dosage
D037742:Nanotubes, Carbon; D011108:Polymers; D011137:Polystyrenes