Tableau 5
Épaisseur moyenne de couche oxydée du PEI déterminée par micro-indentation, spectroscopie IRTF ou microscopie optique après différentes durées d’exposition dans l’air à 220 et 250 °C.
Average thickness of oxidized layer of PEI determined by micro-indentation, FTIR spectrophotometry or optical microscopy after different durations of exposure in air at 220 and 250 °C.
| T (°C) | t (h) | lox (µm) |
|---|---|---|
| 220 | 429 | 275 ± 25 |
| 667 | 400 ± 50 | |
| 1270 | 750 ± 50 | |
| 1985 | 750 ± 50 | |
| 250 | 94 | 225 ± 25 |
| 670 | 350 ± 75 | |
| 1273 | 490 ± 60 | |
| 1966 | 550 ± 50 |
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