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Registered Member #3824
Joined: Sun Apr 10 2011, 08:29PM
Location: Edmonton, Alberta, Canada
Posts: 54
Hello, has anyone tried making capacitors with neoprene as the dielectric? I have a bunch of bituthene rubber laying around and I think it will be easier to use than poly drop sheet dielectric.
Registered Member #1321
Joined: Sat Feb 16 2008, 03:22AM
Location:
Posts: 843
The first thing to do is to check the relevant dielectric properties. IIRC, neoprene is extremely lossy (is neoprene the same thing as bituthene?). I believe it's so lossy that it would be completely useless for most applications.
Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Does your neoprene have micro bubbles, like some that are foam plastic type. that kind with voids wont be good, the e-field is minimized in the plastic, and maximized in the air voids. cuasing breakdown.
Registered Member #2099
Joined: Wed Apr 29 2009, 12:22AM
Location: Los Altos, California
Posts: 1716
Are you talking about bituthene (R), the roof-sealing membrane? With a core layer of material intermediate between rubber and asphalt, that gets your hands black when you handle it? I would guess that would also have intermediate dielectric properties. Neoprene, and other tabulated rubbers hard enough to have durometer ratings, are not necessarily representative of bituthene. Are the rubbers black because of carbon-black pigment?
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Neoprene Caps
