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Particle-Filled Silicones for EMI Shielding and Environmental Sealing

Posted by Katie Sullivan

Oct 27, 2014 11:00:00 AM

Particle-filled silicones are elastomeric compounds that combine the advantages of silicone with electrical properties of metals. 

Some designers have concerns about using particle-filled silicones.  Silicones have desirable material properties, but loading a high percentage of particle filler into the rubber in an effort to increase conductivity can result in negative tradeoffs.  Typically industry professionals worry that particle filled electrically-conductive silicones are:

  • too hard
  • too brittle
  • too expensive
  • have long lead times
  • limited by mold size dimensions
  • not thin enough for newer, thinner designs

We find that suppliers are offering specialty silicones that aren't too hard, too brittle, too expensive, take too long to produce or are too thick.  These materials are suitable for a number of applications and industries.

Marian can source a variety of particle-filled silicone materials and can convert the materials to create customized parts for your application.  Please contact us today for additional information.

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Topics: EMI Shielding