Parylene Barrier Properties
Properties of Parylene
The physical properties of Parylene and the deposition method allows Parylene to form a pin-hole free film on the subject substrate. Therefore, it provides an exceptional barrier to both liquids and gases. The table below lists the gas permeability characteristics of Parylene N and C and also shows its typical values.
Data obtained following appropriate ASTM methods
| Properties of Parylene | Parylene N | Parylene C |
|---|---|---|
| Data obtained following appropriate ASTM methods | ||
| Typcial Barrier Properties | ||
| Gas Permability | ||
| cm3- mil/100 in2-24hr – atm (23°C) | ||
| Nitrogen | 7.7 | 0.95 |
| Oxygen | 30 | 7.1 |
| Carbon dioxide | 214 | 7.7 |
| Hydrogen sulfide | 795 | 13 |
| Sulfur dioxide | 1.89 | 11 |
| Chlorine | 74 | 0.35 |
| Moisture Vapor Transmission | 1.50 | 0.14 |
| g-mil/100 in2-24hr, 37°C, 90% RH | ||
| 1 mil = 1/1000 in = 25.4 microns |
Technical Data Sheet: PCT Properties of Parylene
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