ISOLATING AND QUANTIFYING THE DEVELOPMENT OF SHEAR VS. PRESSURE GENERATED HEAT IN THE PLASTIC MELT DURING INJECTION MOLDING

摘要

Whether pressure or shearing of a material has a larger effect on its temperature rise through a typical injection molding cycle is a debated subject. Both of these factors may have a theoretical effect, but they have not been quantified. This experiment utilizes temperature and pressure sensing equipment with conventional injection molding to respond to this issue. From the data collected, both shear and pressure heating affects on the melt can be quantified and will be contrasted to that predicted by injection molding simulations.