The Characterization of Pyrolytic Carbon Black Prepared from Used Tires and Its Application in Styrene–Butadiene Rubber (SBR)

The pyrolytic carbon black (PCB) made from used tires was used in styrene‐butadiene rubber (SBR). The basic properties of PCB were characterized. The effects of PCB on the processing properties of SBR compounds and the mechanical properties of vulcanizates were investigated and compared with other traditional fillers. The results showed that the chemical composition of PCB was mainly C, O, S, Zn and Si. The content of ash wa as much as 13.3%. The SEM photos showed that the primary particle size of PCB was smaller than that of N774, but the aggregate size was larger than that of N774. The effect of PCB on the processing properties of SBR compounds was similar to that of other fillers. The reinforcing effect of PCB was similar to that of N774, but inferior to that of N330.