REMOVAL OF OXYGEN DISSOLVED IN THERMOPLASTIC RESIN FOR GENTLE PROCESSING

摘要

The effect of temperature and time on desorption of Oxygen dissolved in thermoplastic resin has been investigated. Exclusion of Oxygen is presently studied to reduce thermo-oxidative degradation in injection molding. A desorption fixture with an oxygen-sensor has been used to measure while a model has been implemented to calculate the amount of Oxygen dissolved in thermoplastic resins in dependence of desorption parameters. Results indicate a good match of experimentally attained and calculated values and a high potential for gentle processing by exclusion of Oxygen.