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Old 29th December 2012, 03:20 PM   #761
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I don't think Tesa glue is the same as PVA glue.

Remember this picture that I posted a few years back? That's when I was using PVA glue and black ink.

Click the image to open in full size.

@Calvin
They do use headphones in a submarine, don't they?

Wachara C.
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Old 29th December 2012, 04:01 PM   #762
Calvin is offline Calvin  Germany
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Hi,

Yes, they do, but outboards?

jauu
Calvin
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Old 2nd January 2013, 08:43 PM   #763
WrineX is offline WrineX  Netherlands
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i only had one glue that worked partly, non of them where tessa. one that did worked was also watterbassed for the dutch people from the HEMA. but still i prefer deluted licron. its expensive and kind of a ****** to get but at least i got my test sample for free
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Old 8th March 2013, 07:37 PM   #764
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Cool New coating causes unexpected problem???

Graphite lasted pretty well but gave up eventually. Staticide always deteriorated after a few months on my DiY panels. I just tried a mixture of ISO-propanol with distilled water and a few drops of hydrogen peroxide. It appeared to work beautifully - around 25meg conductivity and full 2kV bias in the centre of the diaphragm. Big snag! More than half the bias disappears when stators connected back into the amp. My drive comes from the anodes of the o/p valves via coupling caps with a chain of resistors to ground. I've built three of these along the lines of Morgan Jones "Beast" and they normally work well. Can anyone suggest what's gone wrong. I'd be very grateful.
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Old 8th March 2013, 09:18 PM   #765
Legis is offline Legis  Finland
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Interesting, do you suspect that the conductivity of H2O2 lasts long?
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Old 8th March 2013, 11:14 PM   #766
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Default Response to Legis

No, I've no idea about longevity here. I just looked up a list of conductive fluids which included data on conductivity and chose some I had available.
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Old 8th March 2013, 11:15 PM   #767
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Quote:
Originally Posted by WrineX View Post
i only had one glue that worked partly, non of them where tessa. one that did worked was also watterbassed for the dutch people from the HEMA. but still i prefer deluted licron. its expensive and kind of a ****** to get but at least i got my test sample for free
Since you diluted it, I'm assuming you used the Licron that comes in a plastic spray bottle, rather than the aerosol can verison? And what was the dilution and method of application?

I've only used the aerosol version so I'm curious.
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Old 8th March 2013, 11:40 PM   #768
Bazukaz is offline Bazukaz  Lithuania
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Quote:
Originally Posted by gohin View Post
No, I've no idea about longevity here. I just looked up a list of conductive fluids which included data on conductivity and chose some I had available.
H2O2 will decompose over time and especially under light. It is not what you want for coating.
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Old 9th March 2013, 12:06 AM   #769
Legis is offline Legis  Finland
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Very conductive black ink + Tesa glue did not as good as hoped, too high resistivity. I might try it again with more ink. I also ordered 120 grams of Elvamide. I think that might work well with some ink to boost the conductivity and to make it more stable in different climates. With ink the elvamide could also hopefully be be very diluted. Any experiences of this combo?
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Old 9th March 2013, 02:43 AM   #770
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Quote:
Originally Posted by CharlieM View Post
Since you diluted it, I'm assuming you used the Licron that comes in a plastic spray bottle, rather than the aerosol can verison? And what was the dilution and method of application?

I've only used the aerosol version so I'm curious.
The only difference between aerosol and bottled version is a presence of propellants:
CHEMICAL NAME CAS #
2-Propanol 67-63-0
1-Butanol 71-36-3
Polymer, Proprietary
Nitromethane 75-52-5
Methanol 67-56-1
Propane (aerosol only) 74-98-6
N-Butane (aerosol only)106-97-8
Non aerosol comes in gallon bottles so price would be few hundred bucks.
Licron has urethane binder staticide has acrylic one.
I doubt dilutability of licron in water. Working with alcohol based coatings is a pain in the ... it dries too fast: spraying only
1756-G $298.99 per bottle min 4 to buy ground shipping only
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