Study of the effect of different types of SBR-filled silica rubber on physical-mechanical properties and prediction of rolling resistance by rheological properties

In this research, the physical-mechanical and rheological properties of the composites obtained from SBR1502, SBR1712, SBR1763 and SBR72612 filled with 55 silica Particles were investigated and compared. Also, given that the rheological behavior of rubber compounds can reflect many of the tire's functional properties, and knowledge of the rheological properties of the rubber materials enables us to predict the rolling resistance properly. In this study, the rheological properties of the samples were measured by RPA 3000. For this purpose, four samples were prepared with E1SBR / Silica, E2SBR / Silica, E3SBR / Silica and SSBR / Silica codes. The results of molecular weight distribution analysis showed that SSBR has the thinnest molecular weight distribution and the highest molecular weight. Also, examination of the mechanical properties showed that the E1SBR / Silica sample had the highest amount of elongation and the lowest Young's modulus, which increased the modulus of Young's modulus and molecular weight, respectively, and decreased the elongation percentage. Also, rheological properties analysis showed that SSBR / Silica sample had the lowest dissipation factor which is expected to have the lowest rolling resistance of the tire made with this sample. By examining the amount of rheological properties of the strain broom in the specimens, it can be found that the greater the storage modulus, the greater the amount of force at a constant percentage of elongation, which is fully consistent with the mechanical properties results.