jnorv Posted January 28, 2002 Share Posted January 28, 2002 Does anyone know what is the dielectric constant of Polyolefin heat shrink tubing? Quote Link to comment Share on other sites More sharing options...
Ray Garrison Posted January 28, 2002 Share Posted January 28, 2002 courtesy of www.madisoncable.com we have: Cellular Polyolefin: Dielectric improvements in capacitance within insulations are provided by production of a cellular structure in the finished insulation. Processes of producing an inert gas in the polymer melt are controlled in the extruder and the resulting extrudate can be provided with a variation in the amount of voids (air to solid regions). This allows control over the dielectric constant and dissipation factor. Polyolefin dielectric constant (typically 2.27) can be lowered to 1.55 by expansion. You're welcome. ------------------ Music is art Audio is engineering Ray's Music System Quote Link to comment Share on other sites More sharing options...
Marvel Posted January 28, 2002 Share Posted January 28, 2002 It partly depends on the thickness of the wall material. If you go to the 3M site, you can do some research there. Different kinds are made to different MIL Specs, fulfilling different needs. Are you worried about high voltage arcing through the material, or how it will change the capacitance on a cable? Marvel Quote Link to comment Share on other sites More sharing options...
Marvel Posted January 28, 2002 Share Posted January 28, 2002 Ray, How are things in your neck of the woods these days? Are you back to work or are things still off for you? You may have posted this earlier, but I/ve been on to other projects for a while. The LS project is on hold while I spend money on other things (just built a dual Athlon 1.4 Ghz w/768 M ram -- smokin' fast). Marvel This message has been edited by Marvel on 01-28-2002 at 02:13 PM Quote Link to comment Share on other sites More sharing options...
jnorv Posted January 28, 2002 Author Share Posted January 28, 2002 I am looking at capacitance effects. There is a big difference in price and avaiablity between teflon shrink and polyolefin. Thanks. Jim Norvell Quote Link to comment Share on other sites More sharing options...
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