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4hv.org :: Forums :: Chemistry
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corn oil and PVC, and vinyl tubing.

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Patrick
Tue Dec 07 2010, 04:57PM Print
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
it seems corn oil used for dielectric strength has caused my tubes and alligator clips to harden to the point where they are no long flexible enough to work! and on the really old dry ones i see orange "resin like" hard stuff. This only seems to happen the flexible vinyl aquarium tubes or soft pvc stuff.

can any of you chemist aces tell me if vegatable oil or peanut oil will do the same?

TY
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Bored Chemist
Wed Dec 08 2010, 09:04PM
Bored Chemist Registered Member #193 Joined: Fri Feb 17 2006, 07:04AM
Location: sheffield
Posts: 1022
Probably. The effect you see is the result of the plasticiser leaching out of the PVC.
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Patrick
Thu Dec 09 2010, 04:02AM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Bored Chemist wrote ...

Probably. The effect you see is the result of the plasticiser leaching out of the PVC.

CRAP! does that mean any non-polar fluid will do the same?, willl the plasticizer change the electrical properties of the dielectric oil?

maybe i need to switch over to soft silicone tubing.
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Bored Chemist
Thu Dec 09 2010, 07:31PM
Bored Chemist Registered Member #193 Joined: Fri Feb 17 2006, 07:04AM
Location: sheffield
Posts: 1022
Probably, yes.
Yes, at least a bit and
Yes.
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Patrick
Thu Dec 09 2010, 11:10PM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
shit.
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