On the more informative version of thermomechanical analysis at compression mode

Summary

An adjusted version of description of some characteristics of linear, crosslinked, and filled polymers by using a more informative version of TMA at a compression mode is presented. It is based on a model network with physical and/or chemical junctions and testing a layer up to 0.5 mm thick of polymers in rigid and viscoelastic states. The TMA makes possible to describe a structure with two or three topological regions exhibiting various relaxation transition temperatures, the difference is up to 200°C. This method makes possible to evaluate also characteristics of molecular mass distribution of the chain segments between branching junctions in particular regions, crystallinity degree, and compactness. Knowledge of these properties helps an optimization of formulation of the polymeric material and processing technology. In this work, changes in previous definitions are introduced, too.