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THERMALLY CONDUCTIVE AND ELECTRICALLY INSULATIVE POLYMER COMPOSITIONS CONTAINING A THERMALLY INSULATIVE FILLER AND USES THEREOF

  • US 20120217434A1
  • Filed: 02/22/2012
  • Published: 08/30/2012
  • Est. Priority Date: 02/25/2011
  • Status: Active Grant
First Claim
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1. A composition comprising:

  • a. from 35 to 80 vol % of a thermoplastic polymer;

    b. from 5 to 45 vol % of a thermally insulative filler with an intrinsic thermal conductivity less than or equal to 10 W/mK; and

    c. from 5 to 15 vol % of a thermally conductive filler with an intrinsic thermal conductivity greater than or equal to 50 W/mK,wherein the composition is characterized by;

    i. a thermal conductivity of at least 1.0 W/mK;

    ii. a thermal conductivity of at least 7 times the total filler volume fraction times the thermal conductivity of the pure thermoplastic polymer; and

    iii. a volume resistivity of at least 107 Ohm.cm.

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