Research Article
Influence of Filler from a Renewable Resource and Silane Coupling Agent on the Properties of Epoxidized Natural Rubber Vulcanizates
Table 3
Chemical compositions of RHA.
| Chemical composition | Concentration (%) |
| Silicon dioxide (SiO2) | 91.04 | Potassium oxide (K2O) | 3.70 | Phosphorus pentoxide (P2O5) | 1.36 | Calcium oxide (CaO) | 1.96 | Magnesium oxide (MgO) | 0.45 | Alumina (Al2O3) | 0.52 | Iron oxide (Fe2O3) | 0.60 | Manganese oxide (MnO) | 0.32 | Barium oxide (BaO) | 0.03 | Lead oxide (PbO) | 0.05 | Rubidium oxide (Rb2O) | 0.02 |
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