Research Article
Properties of Vulcanized Polyisoprene Rubber Composites Filled with Opalized White Tuff and Precipitated Silica
Table 3
Rheometric characteristics of NR/PSi and NR/OWT rubber composites.
| | Sample | NR/PSi (phr) | NR/OWT (phr) | (dNm) | (dNm) | (dNm) | (s) | (s) | CRI (s−1) |
| | 1 | 100/50 | — | 5.3 | 0.9 | 4.4 | 60 | 198 | 0.72 | | 2 | — | 100/20 | 3.4 | 0.4 | 3.0 | 102 | 316 | 0.70 | | 3 | — | 100/40 | 3.8 | 0.4 | 3.4 | 84 | 210 | 0.79 | | 4 | — | 100/50 | 3.9 | 0.4 | 3.5 | 84 | 206 | 0.82 | | 5 | — | 100/60 | 3.8 | 0.3 | 3.5 | 80 | 214 | 0.75 |
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