Capacitor materials

To: tesla-at-pupman-dot-com
Subject: Capacitor materials
From: Aric_C_Rothman-at-email.whirlpool-dot-com (Aric C Rothman) (by way of Terry Fritz <terryf-at-verinet-dot-com>)
Date: Wed, 21 Oct 1998 17:32:23 -0600
Approved: terryf-at-verinet-dot-com

     Here is another site that might shed some light on those contemplating 
     the use of styrene in their caps:
     
     http://www.bibby-sterilin-dot-com/cat/azlon/intro.htm
     
     According to this source, styrene has better chemical resistance to 
     "mineral oil" than polyethylene!  This assessment was probably made 
     due to PE's tendency to soften and swell when exposed to mineral oil.  
     Nevertheless, styrene (PS) rates well in resistance to mineral oil.
     
     So, can transformer oil be considered mineral oil for the purpose of 
     predicting PS's long term resistance?  I'd like to use the 5 gal. of 
     Diala-AX I already have instead of buying more stuff explicitly 
     labeled "mineral oil."
     
     Aric