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Corrosion-resistant, form-in-place EMI shielding gasket

  • US 5,910,524 A
  • Filed: 10/06/1997
  • Issued: 06/08/1999
  • Est. Priority Date: 01/20/1995
  • Status: Expired due to Term
First Claim
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1. A one-part, fluent polymeric reaction system which may be applied as a form-stable bead to a surface of a substrate and cured by thermal-addition thereon under substantially atmospheric pressure to form a corrosion-resistant, electrically-conductive, elastomeric EMI shielding gasket having an EMI shielding effectiveness of at least about 80 dB substantially over a frequency range of between about 10 MHz and about 10 GHz, said reaction system having a strip volume resistivity of from about 500-1000 mΩ

  • -cm and comprising an admixture of;

    (a) a silicone resin binder component including a first functional group;

    (b) a cross-linking agent component including a second functional group reactive with said first functional group of said binder component;

    (c) a metallic catalyst component effective to catalyze the reaction of said first and second functional groups; and

    (d) an electrically-conductive filler component comprising nickel-coated graphite particles.

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