Improved thermal conductive polymeric PTC compositions

Improved thermal conductive polymeric PTC compositions

  • CN 101,528,829 B
  • Filed: 08/06/2007
  • Issued: 11/06/2013
  • Est. Priority Date: 08/08/2006
  • Status: Active Grant
First Claim
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1. positive temperature coefficient composition, it comprises:

  • A) semi-crystalline thermoplastic polymer of 30~

    90wt%, its degree of crystallinity is at least 5%;

    B) carbon black of 5~

    50wt%;

    WithC) graphite of 5~

    50wt%, its carbon content at least 99% and granularity be at least 10 microns;

    Wherein this positive temperature coefficient composition is compared with the composition that is comprised of thermoplastic polymer and carbon black and is had improved thermal conductivity.

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