Results Obtained by Using Either MDR or Calorimetry

The results are expressed in terms of profiles of temperature and of state of cure developed through the thickness of the sample located in the dies of the MDR. These 

Only half the thickness of the rubbo sheet is shown, because of the symmetry. 

When the sample, initially at room tanperature, is placed between the dies kept at the desired tanperature, it takes some time for thermal equilibrium through the rubber to establish. Thus steep temperature gradients are developed through the thickness of the sample, especially at the beginning of the process and after 15-20 s, the temperature is uniform. 

On the other hand, the values of the activation energy and of the preexponential factor calculated from these times for 95% modulus by using the Equation 3.13 and 3.14 are collected in Table 3.5. 

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