Effects of recycled carbon-based materials on tyre

This study examined the effect of recycled carbon-based material (rCBM), obtained by chemical degradation of end-of-life tires, on the mixture of tire tread (rubber composite) by comparing it with commercial carbon black (CB-N550). The new chemical degradation method was defined and the new rCBM was obtained. This newly method is more advantageous than other methods (devulcanization and pyrolysis). The rheometeric properties, mechanical properties, hardness, morphological properties, functional structures, thermal degradation behaviours of the rubber composites prepared were determined. The total number of bonds decreased as the amount of rCBM increased in the rubber composite mixture. As the vulcanized rubber network of the rCBM-filled rubber decreases, the cross-linking density of the rCBM-filled rubber was also reduced. As rCBM has a high sulfur value, the degree of chemical cross-linking of rCBM was reduced. In conclusion, rCBM will not be used in place of commercial carbon black but may be used by mixing with commercial carbon black depending on the desired properties of the end products.