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Old 14th January 2012, 12:28 AM   #21
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Thumbs up Update on my use of antistatic vinyl polish

After 2 years; I'm still fully satisfied!
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Old 19th January 2012, 04:31 AM   #22
kctess5 is offline kctess5  United States
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Quote:
After 2 years; I'm still fully satisfied!
Sorry to revive the monster thread guys but...

You still happy with/using that coating? Now were pushing 11 years for your coatings if its still working thats got to be a sign
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Old 24th January 2012, 12:08 PM   #23
tyu is offline tyu  United States
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antistatic vinyl polish
I have not found this in my shops here yet....An thanks to all for the great work on all the coatings....but i gess that some think the 6600 is a better one ...or just as good?

The vinyl polish look good...Dose it have to be Antistatic? ...Is the Antistatic what makes it work..... it looks like it may be ezer to get.
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Old 24th January 2012, 02:00 PM   #24
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It takes a surprising amount of carbon black to make a coating that's conductive. The stuff is also known as acetylene black. If you can't find a source for a small to moderate amount, find a (gas) welder and a piece of sheet metal. Have him/her light the torch, but don't turn on the oxygen. Just play the yellow smokey flame under a piece of metal and you'll quickly get a huge deposit of carbon black. Scrape it off into a jar. This was the original manufacturing process. I've also made conductive coatings using a ground up drawing lead. It has to be the softest type, HB I think.
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Old 25th January 2012, 02:13 AM   #25
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There are soluble dissipative Teflon like materials as well as solvents and adhesion promoters. There is PET, conductive in bulk... There is Teflon coated anti-static Kapton film, specifically designed to withstand corona in x-formers and such.
No doubt it would last more than 2 years, more likely 15...25
Why someone expects 11 years from home-brewed mix... (staff made by professional chemist does not fall in this category) Why some reputable KS company, for instance, is not using it...
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Old 25th January 2012, 11:15 AM   #26
marce is offline marce  United Kingdom
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Carbon black is used tyo colour plastic injected moulded parts as well.
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Old 23rd January 2013, 05:32 PM   #27
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Default Is this suitable?

KONTAKT 222 :: Anti-static 100, 200ml - Prevents stat. Charge

Here is what I found in Germany quiet reasonably priced, do you think it will be suitable?

Delivery condition :: about 0.7 g/cm3
Density at 20 C
Flash point: <0 C
Aerosol: 13 C
Bulk DIN 51 755
Coverage: 3m2 / 200 ml Spray
Spray brechnet: 14 m2 l /
Bulk
After drying of the solvent (for 15 - 30 min):
properties
Thermostability (evaporation loss)
colorless, fine-grained,
water
<5% / h at 220 C.
Surface resistance to crystal clear PVC film (DIN 53483, measuring voltage 10V)
beginning
: 2 ⋅ 10 ^ 6 Ω
after 3 days
: 2 ⋅ 10 ^ 6 Ω
after 83 days
: 46 ⋅ 10 ^ 6 Ω
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Old 23rd January 2013, 08:43 PM   #28
Bazukaz is offline Bazukaz  Lithuania
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Hi,

It will likely work but resistance values of 10^6-10^7 ohms square are not optimal to achieve constant charge operation causing increased THD. Better to search for coatings in the range of 10^8-10^10 ohms square, if available. Some antistatic coatings allow for surface resistance to be controlled either by diluting or applying very thin layer but this must be tested.

Regards,
Lukas.

Last edited by Bazukaz; 23rd January 2013 at 08:45 PM.
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Old 23rd January 2013, 11:34 PM   #29
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Contact 100 is topical anti-static, employing surface water for conductivity
Needs to be reapplied on regular basis.
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Old 24th January 2013, 07:34 AM   #30
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Quote:
Originally Posted by Bazukaz View Post
Hi,

It will likely work but resistance values of 10^6-10^7 ohms square are not optimal to achieve constant charge operation causing increased THD. Better to search for coatings in the range of 10^8-10^10 ohms square, if available. Some antistatic coatings allow for surface resistance to be controlled either by diluting or applying very thin layer but this must be tested.

Regards,
Lukas.
Regarding carbon black: considerable loading is needed to achieve conductivity. Some claim to achieve conductivity by just adding some drops of black ink but without having measured the conductivity before adding these drops there is no evidence of any usuable effect.
The next problem of cb is that the exact resistance is difficult to control, its getting more and more difficult with higher resistance.
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