Effect of Crosslink Density on Cut and Chip Resistance of 100% SBR Based Tire Tread Compound

Abstract

The effect of Crosslink density on Cut and Chip resistance was affected on a typical 100 percent styrene-butadiene rubber (SBR)-based tire tread compound. In order to successfully develop products for tires used in off-road or poor roads and other demanding rubber applications, it is important to understand the C and C effect in rubber. Crosslink density varied by varying the sulphur to the accelerator ratio and also by changing the process aids. Basic polymer, filler and other ingredients such as activators and anti-degradants have remained unchanged. In the first setup, the sulphur was kept constant and the accelerator varied and the reverse was done in the second setup. It was made to achieve different crosslink density by changing the oil dosage and adding different resins. An attempt has been made to correlate Cut and Chip resistance to other physical properties. All these tests have been identified and optimized by the traditional tire tread compound.

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

“…The trends observed in the variation of physical properties can be attributed to that of cross-link density (CLD). [23][24][25] Since CLD decreases with increase in Silica content, modulus and hardness also decreases. Also, this is the reason behind increasing elongation at break.…”