PREDICTING PHASE MORPHOLOGY DEVELOPMENT OF POLYMER BLEND IN CONVERGENT-STRATGHT CHANNEL

摘要

Reduced capillary number theory was used to predict the flow field-induced morphology development of polypropylene/polyamide 6 (PP/PA6) blend with a compatilizer in a convergent-straight channel. Numerical simulation was carried out to predict the flow fields in the channel. The predicted results showed that the dispersed phase featured a droplet structure and a fibrous structure near the center line and wall of the channel, respectively. The predicted results were verified by the experiments. Between the center line and wall, a clear transition of the morphology of dispersed phase was predicted. The predicted transition location was compared to the experimentally-determined result and a good agreement was obtained.