| Topic: |
Science > Physics |
| User: |
"hack_tick" |
| Date: |
04 Feb 2005 04:19:17 AM |
| Object: |
Carbon Black with Plastic ? |
I have read online few places that carbon black, when mixed with glass can
be used as conductor ? is the same applicable with plastic, what about the
changes in color and other properties ?
Also if i would like to do this same experiment at my place, what all
elements will i be requiring, any suggestions ??
perhaps some good link :-)
best regards
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| User: "Uncle Al" |
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| Title: Re: Carbon Black with Plastic ? |
04 Feb 2005 11:47:01 AM |
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hack_tick wrote:
I have read online few places that carbon black, when mixed with glass can
be used as conductor ? is the same applicable with plastic, what about the
changes in color and other properties ?
Also if i would like to do this same experiment at my place, what all
elements will i be requiring, any suggestions ??
Not in glass per se. Glass does not wet graphite. Probably fiberglas
composite.
Any conductor mixed into any dielectric will show conductivity. There
will be a threshhold concentration, depending on the shape of the
conductive particles re percolation conduction, at which things take
off. If you want to lower the concentration threshhold, add
conductive fibers (e.g., graphite fiber chopped roving).
If you add carbon it turns black. If you don't like black try indium
tin oxide (with maybe 1% zirconia added when it is synthesized to
enhance conductivity).
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/qz.pdf
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| User: "hack_tick" |
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| Title: Re: Carbon Black with Plastic ? |
07 Feb 2005 01:57:46 AM |
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hi,
"Uncle Al" <UncleAl0@hate.spam.net> wrote in message
news:4203B515.F33CF758@hate.spam.net...
hack_tick wrote:
[..]
If you add carbon it turns black. If you don't like black try indium
tin oxide (with maybe 1% zirconia added when it is synthesized to
enhance conductivity).
will plastic retain its transparency ? if i am using one ? perhaps not..
and thank you for the previous answer :-)
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| User: "Mark Fergerson" |
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| Title: Re: Carbon Black with Plastic ? |
04 Feb 2005 09:39:15 AM |
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hack_tick wrote:
I have read online few places that carbon black, when mixed with glass can
be used as conductor ?
Never heard that one. Where'd you read it?
is the same applicable with plastic, what about the
changes in color and other properties ?
Yes; turns it black. Generally done for resistance to solar UV.
Also if i would like to do this same experiment at my place, what all
elements will i be requiring, any suggestions ??
Just a good high-impedance multimeter (that can measure multiple
megohms) and whatever you can stick its leads onto. Frinst black PVC
pipe is recommended not to be used as a secondary coil form for Tesla
coils because it's a (really crappy) conductor.
Mark L. Fergerson
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