Abstract

Because tires spend most of their lives at ambient temperature, knowledge of oxidation
kinetics in this temperature regime is very important. Oxidation has been shown to be a
key degradation mechanism in beitcoat compound governing belt edge durability in
passenger tires. The ultra-sensitive oxygen consumption technique developed by K
Gillen was used to measure oxidation kinetics of a passenger tire belt coat compound
over a wide temperature range, including ambient temperature. The ultra-sensitive
oxygen consumption technique allows accurate measurements in this lower temperature
regime, from which accurate time-temperature lifetime oxidation master curves can be
obtained. In this way, it is not necessary to extrapolate to ambient temperatures to predict
lifetime at service temperatures.

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