Excellent Gas Barrier |
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| Nylon-MXD6 shows excellent gas barrier performance compared with Nylon-6 or PET. The oxygen permeation rate of Nylon-MXD6 and other polymers are shown in Table 1.1 and Fig. 1.1. The gas barrier performance of Nylon-MXD6 is much less moisture sensitive than EVOH. Because the gas barrier performance of EVOH varies dramatically with relative humidity, Nylon-MXD6 shows better gas barrier performance in a humid atmosphere. | |||||||||||||||||||||||||||||||||||||||||||||||
Table 1.1 Oxygen Permeation Rate of FilmsFilms |
Oxygen Permeation Rate |
(cc/m2-day-atm) 20µ, 23°C 60%RH |
80%RH |
90%RH |
Nylon-MXD6 (oriented) |
2.8 |
3.5 |
5.5 |
Nylon-MXD6 (non-oriented) |
4.3 |
7.5 |
20 |
EVOH-32 |
0.5 |
4.5 |
50 |
EVOH-44 |
2.0 |
8.5 |
42.5 |
PAN |
17 |
19 |
22 |
Nylon-6 (oriented) |
40 |
52 |
90 |
Nylon-6 (PVDC-coated) |
10 |
10 |
10 |
PET (oriented) |
80 |
80 |
80 |
PP (oriented) |
2,500 |
2,500 |
2,500 |
PP (oriented, PVDC-coated) |
14 |
14 |
14 |
|
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