Prediction of the non-isothermal creep strain of a glassy polymer on the basis of dynamic analysis results

In the present work, the non-isothermal creep response of a glassy polymer was experimentally studied and analyzed theoretically by a viscoelastic model, introduced in previous works. The main concept of this research is the prediction of the non-isothermal creep strain data on the basis of independent experimental results, namely dynamic mechanical analysis and stress–strain results at various temperatures. Two different approaches regarding the non-isothermal constitutive equation were studied, i.e., one established in the literature and the second one based on the assumption that the temperature dependence can be taken into account by utilizing the concept of the reduced time. A quite successful prediction of the non-isothermal creep strain has been achieved.