Fig. 1.
Fig. 2.
Fig. 3.
Fig. 4.
Fig. 5.
Fig. 6.
Fig. 7.
Fig. 8.
Fig. 9.
Fig. 10.
Total electron energy of each dissociation reaction reactants and radical generators at 0 K
| NR | NR·(a) | NR·(b) | NR·(c) | NR·(d) | |
|---|---|---|---|---|---|
| E/(Ha) −196.4709459 PAS-Ce | −195.8011947 PAS-Ce·(e) | −195.8011947 PAS-Ce·(f) | −195.8011947 PAS-Ce·(g) | −195.8011947 2246 | |
| E/(Ha) −1786.38994 2246·(h) | −1795.4308478 2246·(i) | −1795.4539801 H· | −1795.4249401 | −1083.9759531 | |
| E/(Ha) −1083.40659 | −1083.368464 | −0.494376 |
Activation energy calculated according to the Kissinger method
| Category | Blank adhesive material | PAS-Ce/NR | 2246/NR |
|---|---|---|---|
| Ea/kJ/mol | 149.311 | 168.615 | 161.956 |
Characteristic temperature of thermal and oxygen aging of different adhesive materials
| Category | Blank adhesive material | PAS-Ce/NR 2246/NR | |
|---|---|---|---|
| T0/°C | 218 | 230 | 236 |
| Tmax/°C | 356 | 387 | 345 |
| T0.05/°C | 287 | 313 | 303 |
| Tf/°C | 466 | 480 | 472 |
Activation energy calculated according to the FWO method
| Category | Blank adhesive material | PAS-Ce/NR | 2246/NR |
|---|---|---|---|
| Ea(kJ·mol−1) | 94.423∼156.834 | 102.183∼173.406 | 99.678∼166.108 |
Energy correction values of the reactants and radicals for each dissociation reaction
| T(K) | Energy School is worth | |||||
|---|---|---|---|---|---|---|
| NR·(a) | PAS-Ce·(e) | PAS-Ce·(f) | PAS-Ce·(g) | 2246·(h) | 2246·(i) | |
| 200.00 | 63.045 | 203.522 | 204.182 | 203.446 | 277.349 | 276.256 |
| 225.00 | 61.225 | 198.901 | 199.726 | 198.742 | 273.450 | 272.447 |
| 250.00 | 59.347 | 193.999 | 194.989 | 193.757 | 269.301 | 268.394 |
| 275.00 | 57.412 | 189.213 | 190.359 | 188.894 | 264.907 | 264.101 |
| 298.15 | 55.570 | 188.82 | 189.978 | 182.961 | 260.622 | 259.913 |
| 300.00 | 55.421 | 183.37 | 184.698 | 177.161 | 260.270 | 259.569 |
| 325.00 | 53.376 | 177.652 | 179.153 | 171.099 | 255.396 | 254.804 |
| 350.00 | 51.277 | 171.673 | 173.349 | 164.78 | 250.280 | 249.807 |
| 375.00 | 49.125 | 165.437 | 167.29 | 158.21 | 244.947 | 244.581 |
NR formulation with different antioxidant additions (phr)
| Group | 1 | 2 | 3 |
|---|---|---|---|
| Natural Rubber | 100 | 100 | 100 |
| Zinc oxide | 5 | 5 | 5 |
| Stearic acid | 4 | 4 | 4 |
| Sulfur | 2.3 | 2.3 | 2.3 |
| Accelerator Ma | 0.3 | 0.3 | 0.3 |
| Accelerator DMb | 1.6 | 1.6 | 1.6 |
| Antioxidant PAS-Ce | 0 | 1.2 | 0 |
| Antioxidant 2246 | 0 | 0 | 1.2 |