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Registered Member #1346
Joined: Fri Feb 22 2008, 05:48PM
Location: Rochester, NY
Posts: 7
I am thinking about spraying the back of some 1/4' acrylic with spray paint to produce a good visual effect. The problem is that the acrylic is also host to some 15KV terminals that travel through the acrylic.
Does any one have any thoughts on weather spray paint + HV will work out alright?
My initial guess is a straight out absolutely not.
Registered Member #2893
Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
Well it depends on the color. Some paints use carbon black as a pigment, and carbon as we all know is conductive. I really don't think anyone lists conductivity on their spray paint data sheets, so it may be up to you to do some testing.
Registered Member #1346
Joined: Fri Feb 22 2008, 05:48PM
Location: Rochester, NY
Posts: 7
Yea your probably right, but it never hurts to ask in my opinion. I will test the black I have handy and let you guys know the results. Hopefully one of the professors around here has an HV Megaohm meter.
Registered Member #162
Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3140
I definately agree with the idea of testing with a flyback. 'Meggers' that I use test at 250/500/1000 Vdc An insulator at 1 kVdc may not be at 15kV sc
Other than that, if the paint adheres well to surfaces it protects them any small areas that do not stay stuck on will allow airgaps, then a film of moisture, then corrosion and/or conductivity at high voltages. De-grease (detergent,alcohol etc.) and dry the area to be painted well before painting. Test any cleaners for any effects on the materials that you will paint.
Registered Member #1408
Joined: Fri Mar 21 2008, 03:49PM
Location: Oracle, AZ
Posts: 679
Those are wise words! Insulation w/ paint is a rather dicey issue. Using a Meggar helps a great deal in understanding where even heavier insulation needs support.
Registered Member #1346
Joined: Fri Feb 22 2008, 05:48PM
Location: Rochester, NY
Posts: 7
so I have heard from a reliable source that Krylon paint works quite well in an HV situation (He coats his Tesla Coil secondaries with it, occasionally)
Another individual says that scotch 1603 / 1602 Insulating sealer works as well. Black (1603), Red (1602).
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HV + Spray Paint
