The melting behavior of polymeric materials in single screw plasticizing units is a crucial factor for the further process steps. A new method to characterize the melting behavior of polymer bulk solids in a single screw extruder using a model experiment with an optical measurement system was introduced in 2013. Polymer granules or solid samples are pressed onto a heated, rotating shaft while the thickness distribution of the melt film is measured according to the principle of optical triangulation (light intersection). In this work, the melting behavior of different shaped polymeric bulk solids is examined under processing conditions, considering different velocities, pressures and temperatures. The measured results are compared to theoretical values which are calculated according to Tadmor´s “Drag Induced Melt Removal” Model, which is the basis for the calculation of the melting in a single screw plasticizing unit.
|Publication status||Published - 2014|
|Event||6th International Conference on Polymer Behaviour - Wien, Austria|
Duration: 22 Sep 2014 → 26 Sep 2014
|Conference||6th International Conference on Polymer Behaviour|
|Period||22.09.2014 → 26.09.2014|