Research Article
Effects of Blend Ratio and SBR Type on Properties of Carbon Black-Filled and Silica-Filled SBR/BR Tire Tread Compounds
Table 2
Compound formulations.
| Ingredient | SBR/BR blend ratio | 100/0 | 90/10 | 80/20 | 70/30 | 0/100 |
| SBR (6450SL or 1723) | 137.5 | 123.75 | 110 | 96.25 | 0 | BR | 0 | 10 | 20 | 30 | 100 | ZnO | 3 | 3 | 3 | 3 | 3 | Stearic acid | 2 | 2 | 2 | 2 | 2 | 6PPD | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | TMQ | 1 | 1 | 1 | 1 | 1 | Paraffin wax | 2 | 2 | 2 | 2 | 2 | Filler (CB or Silica) | 80 | 80 | 80 | 80 | 80 | | 8 | 8 | 8 | 8 | 8 | TDAE | 10 | 13.75 | 17.5 | 21.25 | 47.5 | TBBS | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | TBzTD | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | Sulfur | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 |
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was added only in silica-filled system. oil content was kept constant at 47.5 phr for all compounds.
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