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Sep 10, 2024

Thermally Conductive Foils /Sheets made of silicone

The thermal conductivity of silicone is known to be zero. Only by the formulation of thermally conductive ceramics such as bornitride, aluminium oxide, aluminium nitride or other mixtures into the polymer structure of the elastomer is the technically required thermal conductivity achieved. Special, specifically patented manufacturing processes from the home of the DENKA guarantee the correct geometric introduction of the heat conducting particles into the polymer structure of the silicone elastomer. As a result, considerable thermal conductivity is achieved while at the same time optimum overall transfer resistance is archieved as well. The overall result is therefore excellent thermal, mechanical and electrical properties for the different products.

The thermally conductive sheets, which are offered by us, with different thermal conductivity, all have a certain surface softness, which enables optimum efficient connection of the contact surfaces.

Some important features to emphasize:

  • The thermal conductivity of all film types is excellent, as well as the thermal resistance which can be extremely low with suitable and correct application.
  • The mechanical strength is greatly improved by the use of glass fibres. The risk of the Tim being destroyed by mechanical stress during assembly is minimized.
  • The handling processes often described in specialist literature or semiconductor manufacturers such as the additional use of thermal paste are not necessary; So there is no risk of contamination. In comparison, this feature does not have mica or ceramics at all.
  • Stable heat transfer properties can be achieved even at low tightening torques.
  • The dielectric of the films is half lower than is usual for ceramic discs or mica.

More features in brief:

  • Material thicknesses from 0.08 to 0.8 mm
  • Thermal conductivity up to > 5 W/mK
  • Thermal resistance below 0.08 °c-inch2/W
  • Mechanical stability due to glass fibre reinforcement
  • No residue after removal (maintenance, inspection)
  • Non-combustible according to UL 94 VO
  • Available on Reel
  • One-sided self-adhesive (AV)
  • In blanks and shapes according to customer specification
  • In the form of sheets and mats


More information here>>