HEAT EXCHANGE IN MOLDS FOR INJECTION MOLDING OF LOW-VISCOUS EPOXY RESINS

摘要

The main aim of the research was to study the influence of adjustable process parameters on the breaking load of electrical insulating parts. Those insulating parts have been made by injection molding of low-viscous epoxy resins. Based on planned experiments and statistical analysis it has been concluded that the most influence on breaking load had two parameters: cavity wall temperature and reaction time. Thus, the additional aim of investigation was defined, which is to study the temperature field in molds and to establish the heat balance of molds for this procedure. Based on our own experience in this field, starting with heat exchange in molds for injection molding of thermoplastics, powder thermosets like phenolic and rubber compounds, one difference has been established. Due to long cycle time, some additional factors influence the heat exchange and temperature field in these molds.