Research Article
Effects of Thermal and Humidity Aging on the Interfacial Adhesion of Polyketone Fiber Reinforced Natural Rubber Composites
Table 4
Surface functional groups analyzed by XPS of the polyketone/NR composite as thermal aging and humidity aging.
| | Surface treatment | Binding energy (eV) | | 285 | 287.6 | 289.2 | 286.1 | 532 | | The concentration of correlative functional groups (%) | | C-C | C=O | COOH | C-OH | O1s |
| | Raw | 72.81 | — | 3.52 | 6.44 | 17.23 |
| | Thermal aging | 105°C (8 days) | 59.34 | 11.6 | 8.25 | — | 20.81 | | 125°C (8 days) | 60.07 | 12.66 | 5.01 | — | 22.26 | | 180°C (2 days) | 47.89 | 5.9 | 5.92 | 15.16 | 25.13 |
| | Humidity aging | 99% (500 h) | 77.86 | — | 2.93 | 3.07 | 16.14 |
|
|
