Electromagnetic interference shielding by using conductive polypyrrole and metal compound coated on fabrics

C. Y. Lee, D. E. Lee, C. K. Jeong, Y. K. Hong, J. H. Shim, J. Joo, M. S. Kim, J. Y. Lee, S. H. Jeong, S. W. Byun, D. S. Zang, H. G. Yang

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Abstract

Electromagnetic interference (EMI) shielding materials of complex type of conductive polypyrrole (PPy) as an intrinsically conducting polymer and silver-palladium (AgPd) metal compound coated on woven or non-woven fabrics are synthesized. From dc conductivity and SEM photographs of PPy/fabric complexes, we discuss charge transport mechanism and the homogeneity of coating on the fabrics. The EMI shielding efficiency of PPy/fabric and AgPd/fabric complexes is in the range of 8 ∼ 80 dB depending on the conductivity and the additional Ag vacuum evaporation. The highest EMI shielding efficiency of PPy/fabric complexes vacuum-evaporated by Ag is ∼80 dB, indicating potential materials for military uses. We propose that PPy/fabrics are excellent RF and microwave absorber because of the relatively high absorbance and low reflectance of the materials.

Original languageEnglish
Pages (from-to)577-583
Number of pages7
JournalPolymers for Advanced Technologies
Volume13
Issue number8
DOIs
Publication statusPublished - 2002 Aug 1

Keywords

  • Chemical polymerization
  • Electrochemical polymerization
  • Electromagnetic interference shielding efficiency
  • Fabrics
  • Metal compound
  • Polypyrrole

ASJC Scopus subject areas

  • Polymers and Plastics

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  • Cite this

    Lee, C. Y., Lee, D. E., Jeong, C. K., Hong, Y. K., Shim, J. H., Joo, J., Kim, M. S., Lee, J. Y., Jeong, S. H., Byun, S. W., Zang, D. S., & Yang, H. G. (2002). Electromagnetic interference shielding by using conductive polypyrrole and metal compound coated on fabrics. Polymers for Advanced Technologies, 13(8), 577-583. https://doi.org/10.1002/pat.227