EFFECT OF MICRO-VISCOSITY AND WALL SLIP ON POLYMER MELT RHEOLOGY INSIDE MICRO-CHANNEL

摘要

The rheological model for polymer melt flow in micro-channels is vital for the accurate simulation of micro-injection molding. In this study, the governing equations for mlet flow in micro-channel were in terms of viscous, incompressible ID flow. The simulated rheological difference between macro model and micro model becomes significant when the micro channel is smaller than 100μm, and increases with the diameter decrease. The simulated results indicate the combined micro-viscosity and wall slip model can improve the simulating precision.