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Method of preparation of a MWCNT/polymer composite having electromagnetic interference shielding effectiveness

  • US 7,955,654 B2
  • Filed: 04/17/2008
  • Issued: 06/07/2011
  • Est. Priority Date: 10/19/2007
  • Status: Active Grant
First Claim
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1. A method of preparing carbon nanotube/polymer composite having electromagnetic interference (EMI) shielding effectiveness, which comprises the following steps:

  • a) preparing a polymer solution containing 0.5-10 wt % of carbon nanotubes dispersed therein, based on the weight of the polymer;

    b) coating the polymer solution containing carbon nanotubes dispersed therein on a substrate and drying the resulting layer coated on the substrate; and

    c) stacking a plurality of the substrates prepared from step b), each of which has the dried layer,wherein said preparing in step a) comprises dispersing carbon nanotubes in an organic solvent;

    dissolving monomers and an initiator in the carbon nanotube dispersion; and

    polymerizing the monomers in the resulting mixture to form said polymer solution containing carbon nanotubes dispersed therein.

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