Re: Capacitor dielectric

To: tesla-at-pupman-dot-com
Subject: Re: Capacitor dielectric
From: "Steve Cook" <Steve-at-g8cyerichmond.freeserve.co.uk> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
Date: Sat, 30 Oct 1999 11:44:07 -0600
Approved: twftesla-at-uswest-dot-net
Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

I've just checked on some history notes of mine. Apparently 'Polythene' was
a trade name, but my old notes are a bit incomplete, I think it belonged to
either ICI or DuPont.
----- Original Message -----
From: Tesla List <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, October 29, 1999 6:49 PM
Subject: Re: Capacitor dielectric


> Original Poster: "ROBERT CRESSLER" <59CREROB-at-menasha-dot-com>
>
>      Michael,
>                   in regards to "polythene" and Polyethylene   in
> Australia...........
> I have not heard of such a material before (at least in N.A.) and I
suspect
> that
> polythene is some type of trade specific call out. i would venture it is
> some form of Polyethylene.........
> lldpe,,ldpe,mwpe,hdpe,vhmw,uhmw.......the higher the
> molecular weight the better the  physical & electrical properties for the
> various "grades" of Polyethylene.  Avoid colors(especially black=carbon )
> and recycled/reground types........ natural virgin material will be
> clear-ish (LDPE) to solid milk white (HDPE and up).
> good luck!
> Robert  Cressler
>
> ps you can also contact: Poly Hi Solidur Aus.
>                                        1 Prosperity parade
>                                         warrirewood,NSW
>                                         800.677.674 or 02.979.6377
>
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