Optimising filler dosage to balance rolling resistance and grip properties tyre tread compound

Silica is a reinforcing filler which is known for its ability to improve wet/snow grip and rolling resistance in tyres. However, incorporating Silica in high quantities impairs other significant features like physical properties and processing behaviour of the compounds. In this study, the focus was on balancing rolling resistance and grip properties while attempting to nullify the negative effects of Silica, by arriving at an optimum ratio of combination of Carbon Black and Silica. Three different compounds were prepared – COMP_1 had CB:Silica in 2:1 ratio, whereas COMP_2 and COMP_3 had CB:Silica in the ratios 1:1 and 1:2 respectively. The impact of their dosage on various properties were investigated. Taking into consideration abrasion loss and grip properties, 1:1 ratio was deemed to possess the optimized ratio.