Research Article
Evaluation of Some Conducting Polymers as Novel Antioxidants for Rubber Vulcanizates
Table 5
NR formulations containing the prepared P(An-co-T) and PT.
| | Formulation no. | 10 | 11 | 12 | 13 | 14 |
| | Control (without) | — | — | — | — | — | | PN | — | 1 | — | — | — | | TMQ | — | — | 1 | — | — | | P(An-co-T) | — | — | — | 1 | — | | PT | — | — | — | — | 1 |
| | Rheometric characteristics at °C | | Minimum torque, , dN·m | 2 | 1 | 1 | 1 | 1 | | Maximum torque, , dN·m | 70 | 69 | 69.5 | 70 | 72 | | Optimum cure time, , min | 13 | 12 | 11 | 12 | 11 |
| | Physicomechanical properties at the optimum cure time | | Stress at rupture, , MPa | 17.84 | 18.75 | 19.8 | 27.4 | 25.10 | | Strain at rupture, , % | 765 | 857 | 705 | 670 | 647 |
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Base recipe (phr): NR, 100; stearic acid, 2; zinc oxide, 5; HAF, 30; processing oil, 3; CBS, 1; S, 2.
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