Pyrolysis Characteristics of Tire Rubber at Low Temperatures.

Pyrolysis of used tires is a promising method for recovering valuable chemicals. However, the conventional high-temperature pyrolysis of natural rubber (polyisoprene)-based tires suffers from a low-selective isoprene recovery, heavy carbon black (CB) damage, and coke formation on the CB. In this paper, we report on characteristics of the low-temperature pyrolysis of CB-containing polyisoprene-based tire rubber that is vulcanized with sulfur.