Heating Temperature and Changes in the Physical and Structural Properties of Polymeric Materials

The organic nature of the polymers can lead to instability of the material and even decomposition under different conditions. The article presents the results of the analysis of physical phenomena associated with thermal degradation of polymers. The samples produced by the injection moulding process were heated at 90 degrees C for 5000 h. The research with the use of dynamic mechanical analysis were carried out on reference samples that were subjected to the thermal degradation process. The variability of physico-mechanical characteristics of the tested samples was determined in the range of the storage modulus and the tangent of the mechanical loss angle as a function of temperature. By means of thermogravimetric analysis, the loss of sample mass as a function of time during the annealing process was determined.