Table 3.
Tensile properties of PEEK film with spherulites and fibre like crystals, (a) yield strength and (b) elongation at break.
| Annealing time | Ultimate Tensile Strength (MPa) | |
|---|---|---|
| Melt crystallisation | Quench Crystallisation | |
| 5 min | 85 ± 5 | 80 ± 5 |
| 10 mins | 94 ± 7 | 85 ± 4 |
| 30 mins | 88 ± 5 | 89 ± 4 |
| 60 mins | 96 ± 9 | 82 ± 5 |
| 120 mins | 77 ± 11 | 80 ± 6 |
| Annealing time | Yield Strength (MPa) | |
| Melt crystallisation | Quench Crystallisation | |
| 5 min | 95 ± 10 | 95 ± 10 |
| 10 mins | 98 ± 10 | 98 ± 10 |
| 30 mins | 102 ± 10 | 103 ± 10 |
| 60 mins | 105 ± 5 | 100 ± 10 |
| 120 mins | 78 ± 14 | 98 ± 5 |
| Annealing time | Elongation at break % | |
| Melt crystallisation | Quench crystallisation | |
| 5 min | 5–20 | 10–50 |
| 10 mins | 5–10 | 10–90 |
| 30 mins | 5–15 | 10–50 |
| 60 mins | 5–15 | 10–50 |
| 120 mins | 5–10 | 10–70 |