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4hv.org :: Forums :: General Science and Electronics
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Can we make conductive epoxy?

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Forty
Sun Oct 02 2011, 10:02PM
Forty Registered Member #3888 Joined: Sun May 15 2011, 09:50PM
Location: Erie, PA
Posts: 649
What is it that you need conductive epoxy for?
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Patrick
Mon Oct 03 2011, 12:15AM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Forty wrote ...

What is it that you need conductive epoxy for?

Heat sensitive components, but in my current project, reapairing a p6013 tek probe, im using it to attach the center of the coax. The center of the coax measure a resistance of 22.5k per foot. As its resistance wire like in a hair dryer or coil-stove-thingie, it cant be soldered.
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Ash Small
Tue Oct 04 2011, 10:19AM
Ash Small Registered Member #3414 Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
I'd go for aluminium powder.

As you point out, you can buy it, and it is used in epoxy to reflect UV, I think, on the decks of boats, etc.

If you have access to a grinder you can make your own, the wheels/discs last for ages when cutting/grinding aluminium.

(I had loads of aluminium powder on my garage floor when I was making heatsinks, and it sounds like you don't need a lot.)
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Conundrum
Tue Oct 04 2011, 08:48PM
Conundrum Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4061
Won't it form oxides easily?

I'd have used copper or gold.
-A
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Proud Mary
Tue Oct 04 2011, 09:00PM
Proud Mary Registered Member #543 Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
I haven't a clue about organo-metallic chemistry, but I wouldn't be at all surprised if certain finely powdered metals were able to react to some degree with the resin or its constituents. Think Raney nickel as a lively example. Worth checking with someone who knows the field.
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