Designing multi-layer polymeric nanocomposites for EM shielding in the X-band

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Abstract

The past two decades have witnessed rapid progress in the development and application of polymers reinforced with nano-scale constituents (on the order of 100 nm), popularly designated as nanocomposites. The present research work focuses primarily on the EM shielding performance of poly(methyl methacrylate) - multi-walled carbon nanotubes (PMMA - MWCNT) nanocomposites in the electromagnetically polluted X-band. The produced thin polymeric nanocomposite films (on the order of tens to hundreds of micrometers) demonstrate a high level of DC conductivity (approx. 30 S/m) at a moderate filler loading of 3 wt.%. The novelty of the content lies in the fact that relevant electromagnetic design parameters were successfully extracted from conducted electromagnetic interference (EMI) SE waveguide measurements on single-layer nanocomposite films. Subsequently, this knowledge was used to design multiple layered materials with varying arrangements of these individual layers to produce nanocomposites with tailored shielding performance. Such design allows the tuning of the two primal EMI shielding mechanisms: reflectivity and absorption, by varying either the conductivity, sequence or thickness of the individual layers. The EM shielding performance of these multi-layer films was subsequently experimentally verified, and was found to be in good agreement with the theoretical design predictions.

Original languageEnglish
Title of host publicationEMC Europe 2018 - 2018 International Symposium on Electromagnetic Compatibility
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Pages783-788
Number of pages6
ISBN (Electronic)978-1-4673-9698-1
ISBN (Print)978-1-4673-9699-8
DOIs
Publication statusPublished - 5 Oct 2018
Event2018 International Symposium on Electromagnetic Compatibility, EMC Europe 2018 - Amsterdam , Amsterdam, Netherlands
Duration: 27 Aug 201830 Aug 2018

Conference

Conference2018 International Symposium on Electromagnetic Compatibility, EMC Europe 2018
Country/TerritoryNetherlands
CityAmsterdam
Period27/08/1830/08/18

Keywords

  • electromagnetic parameter extraction
  • electromagnetic shielding
  • multi-layer structures
  • multi-walled carbon nanotubes
  • Polymeric nanocomposites

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