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From: Long permanence high altitude airships: the opportunity of hydrogen
 | P(He) | (P(H2) | P(O2) |
---|---|---|---|
Poly(ethylene) density 0.914Â g/cm^-3 | 7.40E-13 | 3.70E-13 | 2.20E-13 |
Polyvinilecloride plasticized 10 % | 1.30E-13 | – | 3.83E-16 |
Polyvinilacetate | 4.95E-13 | 2.99E-13 | 1.36E-14 |
Poly(trifluorochloroethylene) film 30Â % cristallinity | 7.05E-14 | 5.10E-13 | 3.00E-15 |
Mylar A | 4.88E-14 | 2.44E-14 | 3.00E-15 |
Nylon 6 | – | 3.98E-14 | 2.85E-15 |
Nylon 11 | 1.34E-13 | 1.46E-13 | – |
Cellophane (relative humidity 43 %) | 1.20E-15 | – | 5.36E-16 |