Hey Gregory...The milky white appearence ( like as in the plastic milk carton) is a sure bet it is polyethylene. The next in line is polypropylene but has a more opaque look to it ( not so transluceint).
There is a "burn" test but it is a bit hazardous due to the melting plastic. Polyethylene will burn with nearly no smoke, a blue flame and the dripping globs of plastic will make a "zipping" noise as it falls from 6 feet + and higher. The polypropylene has a smoky residue, more yellow/red flame as it burns and is less prone to "zip" as the melted plastic falls from height.
The only issue I can see with the sheeting that you have found is that it probably is full of "incedental materials" ( unwanted trash) that will compromise the integrity of the standoff voltage capacity of the plastic. You may end up with a bunch of tiny little holes in the plastic due to hi voltage punch through finding its way via the trash particles....
Scot D G Hunter wrote:
I purchased a roll of "contractor's choice" brand plastic sheeting from Lowe's. It's 6 mil, milky translucent in color. Nowhere does the packaging mention what kind of plastic it is, nor can I find any recycling symbol. I did the microwave oven test on it, and it didn't warm up at all. Does anyone know what kind of poly this is? Does anyone know a quickie test for us non-chemists? I'd like to homebrew some caps, but I want to use polyethylene, not vinyl. Cheers, Gregory R. Hunter_______________________________________________Tesla mailing list Tesla@xxxxxxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla
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