Ethylene-propylene-diene terpolymer (EPDM) is emerging as a dominant individual elastomer of choice in several engineering applications, particularly in applications that demand excellent chemical and thermal stability. As the new engineering applications are being developed, the accurate and reproducible determination of short term mechanical response behavior and prediction of long term properties of gum and their filled compounds are becoming more and more important. On the other hand the instruments normally used to measure the viscoelastic behavior of polymeric materials have limited time/frequency windows. Depending on the experimental window only a portion of the total viscoelastic, response is observed from experimental results. The interpretation, correlation and prediction of long term behavior from these experimental results constitute a challenging task for rubber processors and end users.
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