 DIY silver conductive paint- RESULTS
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Conundrum
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Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4062
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Tried it yesterday, sadly it didn't quite work.
However I did get some nanoparticle silver judging by the Brownian motion in the mixed paint.
Was in the order of 1% or less of the bulk.
I managed to decant some of this into my existing silver paint and it somewhat worked, the conductivity was about 10 ohms per cm so it looks promising.
Maybe go with Bjorn's and Pinky's Brain's idea and use an ultrasonic fogger to make the particles as the frequency is higher so it should make the generated particles smaller.
UPDATE 25/08/2012
Dried up silver paint can be reactivated by mixing in "Liquid Poly" by Humbrol and approx 1/3 of the bottle
worth of polystyrene and one ball bearing then mixing at approx 20C for 10 minutes until the silver is a
uniform colour and when painted on a surface is smooth and evenly silvery looking with a slight opacity.
This is then dried in an oven or with indirect hot air until the solvent evaporates.
This results in something which unlike "regular" silver paint does not soak into paper and yields a conductive
coating of between 1 and 15 ohms per cm probe separation.
I also found that this material does not come off the paper when it is immersed in boiling water, so this in itself
could be handy for making copper or silver coated paper for electrostatic experiments.
A related idea is to paint the "front" of the sheet ie uncoated paper with EL phosphor and then deposit thin lines of
the same paint to form a structure functionally similar to a solar cell.
Even though some of the coating would be obscured enough light ought to get through for a reasonably high
brightness without using ITO.
-A
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