Thermoplastic elastomer properties can be specified using a set of parameters obtained via non-isothermal stress relaxation, sometimes referred to as temperature scanning stress relaxation, when it is carried out at a particular heating rate. It can also describe how the cross-linked rubber network degrades over the course of a few realistic testing hours.

At constant temperature and strain, stress relaxation studies are commonly conducted as time-dependent experiments. It is well known that temperature significantly affects how quickly rubber relaxes. A credible test employing isothermal stress relaxation requires exceptionally extended testing intervals, such as days or weeks, depending on the application, for examining ageing behaviour such as network degradation.

The isothermal cure tests on rubber compounds are among the most popular and significant studies done. The BareissOne software determines all significant test parameters, including maximum and lowest torque, TC values, reaction time and rate, etc., and makes them available to the user in tabular or/and graphical form for additional analysis.

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