Here's something else:
In the patent it says that the membrane/vat floor/ should have oxygen permeability of at least 10 Barrers.
Definition of a Barer:
http://en.wikipedia.org/wiki/Barrerbasically the volume of gas going through a square centimeter of a membrane in one day. I get kind of lost after that. What's the "mm" after the dot in 1 Barrer =....
So 1 Barer = 846 milliliter . mm / (cm2 . day. bar(a))
that means 846 milliliter ". mm" per square centimeter of sheet, in one day at atmospheric pressure. I don't know if ".mm" means "for sheet thickness of 1 milimeter?
Anyway FEP film has permeability rate of 11600 milliliters (m2 . 24 h . atm) for 25 micron sheet.
meaning 11600 milliliters per square meter of sheet, in one day at atmospheric pressure, for 25 micron sheet.
Teflon FA1600 has permeability rate of 340 Barrers, and FA2400 has 990 Barrers. Doesn't say what thickness. How do we compare that to fep?
http://www.professionalplastics.com/pro ... 00Data.pdf Converting m2 into cm2 is easy, but sheet thickness I don't think so. It does say that the thicker the sheet, the less permeable it is.
EDIT: Well if you disregard sheet thickness, and if my stupid math is anything close to correct, Teflon FA is something like 1 million times more permeable to oxygen then fep. literary, those are the numbers.
----------------------------------------------------------
So 2800$ for 18% 100ml bottle. That yields 18 cm3 of Teflon FA sheet.
Lets say you mold a 50 micron sheet of 20x30cm, for a 15" monitor. That would be 3 cm3, enough for 6 sheets.
So about 466$ for that 15" sheet. But 233$ if you go 25 microns thick, and so on.
Now, if it's 1.67 g/cm3 then the research quantity is 93$ per gram of pure Teflon FA yielded from the resin solution.
25.000$ / kg would mean 25$ per gram
was that 1kg of pure FA powder, or resin solution?
How hard would it be to cast/make a sheet that thin, well that's going to be one expensive answer