EMI Shielding Effectiveness of CNTs Composites

Abstract:

A carbon nanotubes (CNTs) composite and its electromagnetic interference shielding effectiveness (SE) were investigated. Its absorptance, reflectance and shielding effectiveness (SE) were analysed. The CNTs composite has a shielding effectiveness (SE) of more than 25 dB (>99.68%) in frequency range from 30 MHz to 5 GHz. The testing results also demonstrate that the shielding mechanism of the CNTs composite is mainly EMI absorption of electromagnitic radiation. The high SE of the CNTs composite in the study is attributed to a high aspect ratio (>3000) and good conductive network of CNTs within the composite.

• Periodical: Applied Mechanics and Materials (Volume 331)
• Pages: 439-442
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.331.439
• Online since: July 2013
• Authors: Ping Li, Aik Seng Low, Yue Yan Shan, Guat Choon Ong, Xi Jiang Yin
• Keywords: Carbon Nanotube Composite, Electrical Conduction, EMI Absorbance, EMI Shielding Effectiveness, Reflection Loss

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