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Literature Detail
The Performance of Multifunctional Acrylates as Anti-Reversion Agents in Tire Applications
Multifunctional acrylates (Sartomer® SR534 and SR534D) provide excellent reversion resistance while providing a minimal impact on optimally cured properties. The object of the present study is to further explore the benefits of antireversion agents. Torque rheometry is used to predict the effect of these agents on preventing reversion in overcure or high-temperature cure conditions. Physical properties of optimally cured and overcured vulcanizates are provided, demonstrating the relative efficacy of anti-reversion agents. Further, flexural fatigue testing at elevated temperatures is used to differentiate the compounds with and without anti-reversion agents in simulated inservice conditions. It will be shown that, with the addition of anti-reversion agents, conventional and semi-efficient vulcanization systems can provide the reversion resistance properties of efficient vulcanization while maintaining the advantage in dynamic properties associated with these cure types. Finally, the mechanism of reversion prevention using SR534 is explored through fundamental swelling experiments and a model reaction system, with results differentiating it from an imidebased product.
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