Electromagnetic Shielding Mechanisms of Ultra-High Thermally Treated Carbon Nanofibers-LLDPE Nanocomposites

Villacorta, Byron and Ogale, Amod (2011). Electromagnetic Shielding Mechanisms of Ultra-High Thermally Treated Carbon Nanofibers-LLDPE Nanocomposites. In: New Frontiers in Fiber Materials Science Symposium, Francis Marion Hotel, Charleston, SC United States, (). 11-13 October 2011.

Author Villacorta, Byron
Ogale, Amod
Title of paper Electromagnetic Shielding Mechanisms of Ultra-High Thermally Treated Carbon Nanofibers-LLDPE Nanocomposites
Conference name New Frontiers in Fiber Materials Science Symposium
Conference location Francis Marion Hotel, Charleston, SC United States
Conference dates 11-13 October 2011
Publication Year 2011
Sub-type Other
Abstract/Summary The electrical properties, electromagnetic shielding effectiveness (EM SE) and the mechanical properties of linear low density polyethylene (LLDPE) composites modified by carbon nanofibers (Pyrograf® III PR-19) have been assessed. Scanning electron microscopy showed good dispersion by twin-screw extrusion. Thermal treatment (HT) of nanofibers (2500°C) improved their intrinsic transport properties, increasing the EM SE of the nanocomposites. Thus, 20 wt% PR-19 HT nanocomposites (~105 Ω·cm, 2.5 mm thick) showed EM SE values as high as 15 dB for most of the frequency range (30 MHz – 1.5 GHz) while retaining, relative to the pure LLDPE, half of its flexibility and strength as well as one third of the ductility. Absorption turned out to be its main shielding mechanism.
Q-Index Code EX
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Conference Paper
Collection: School of Chemical Engineering Publications
 
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Created: Sun, 17 May 2015, 20:47:17 EST by Byron Villacorta Hernandez on behalf of School of Chemical Engineering