Premium
Prediction of extrusion pressure loss of polymer melts flowing through noncircular dies
Author(s) -
Tiu C.
Publication year - 1982
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760221607
Subject(s) - materials science , extrusion , polystyrene , polypropylene , polymer , flow (mathematics) , die (integrated circuit) , composite material , mechanics , newtonian fluid , physics , nanotechnology
The geometric parameter method proposed earlier by Kozicki and coworkers for prediction of pressure losses of non‐Newtonian fluids flowing in ducts of arbitrary cross‐section is shown to be applicable for polymer melt flow through complex dies. Good agreement is obtained between the predicted and the published theoretical and experimental results for polystyrene and polypropylene melts flowing in rectangular and trapezoidal dies. The method is simple to use and requires only the knowledge of two geometric parameters to characterize the flow geometry.