Investigations on the temperature dependence of the die entrance flow of various long-chain branched polyethylenes using laser-Doppler velocimetry

Journal of Rheology

Volumn 46, Issue 4, 2002, Pages 797-815

  Schwetz, Martin ^a   Münstedt, Helmut ^a   Heindl, Marcus ^a   Merten, Armin ^a  

^a UNIVERSITY OF ERLANGEN NUREMBERG   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

COMPUTER SIMULATION; FLOW PATTERNS; FLOW VISUALIZATION; LASER DOPPLER VELOCIMETERS; LOW DENSITY POLYETHYLENES; THERMAL EFFECTS; VELOCITY MEASUREMENT; VORTEX FLOW;

LASER DOPPLER VELOCIMETRY; POLYETHYLENE MELT; TEMPERATURE DEPENDENCE;

RHEOLOGY;

EID: 0036630479     PISSN: 01486055     EISSN: None     Source Type: Journal    
DOI: 10.1122/1.1479352     Document Type: Article

References (35)

1. Flow of polyethylene into a capillary
2. Numerical simulation of extrusion through orifice dies and prediction of Bagley correction for an IUPAC-LDPE melt
3. An approximate analysis for contraction and converging flows
4. A comprehensive experimental investigation of tubular entry flow of viscoelastic fluids
5. Converging flow of polymer melts in extrusion dies
6. Numerical simulation of highly viscoelastic flows through an abrupt contraction
7. The velocity profiles of molten polymers during laminar flow
8. A numerical study of the flow of a low-density-polyethylene melt in a planar contraction and comparison to experiments
9. Einfluss der molekularen Struktur auf das viskoelastische Verhalten von Polyethylenschmelzen
10. Some rheological properties of solutions and blends of hydrogenated polybutadiene
11. Untersuchungen zur scherinduzierten rheologischen Anisotropie von verschiedenen Polyethylen-Schmelzen
12. Application of the laser-doppler velocimetry to polymer melt flow studies
13. Dehnrheologische Eigenschaften von Polyolefinschmelzen und Korrelationen mit ihrem Verarbeitungsverhalten beim Folienblasen und Thermoformen
14. A numerical study of the effect of elongational viscosity on vortex growth in contraction flows of polyethylene melts
15. Experimental velocity distribution measurements of high-density polyethylene flowing into and within a two-dimensional slit
16. Influence of elongational properties on the contraction flow of polyisobutylene in a mixed solvent
17. Long chain branching: Latest results of theory and experiments on model materials
18. Numerical simulation of entry flow of the IUPAC-LDPE melt
19. A new universal extensional rheometer for polymer melts. Measurements on a polystyrene sample
20. Influence of molecular structure on rheological properties of polyethylenes-Part II. Elongational behavior
21. Elongational behavior of a low-density-polyethylene melt. II. Transient behavior in constant stretching rate and tensile creep experiments. Comparison with shear data. Temperature dependence of the elongational properties
22. Influence of molecular structure on secondary flow of polyolefin melts as investigated by laser-Doppler velocimetry
23. The kinematics and stability of die entry flows
24. Low Reynolds number flow visualization of linear and branched silicones upstream of orifice dies
25. LDV measurements of viscoelastic flow transitions in abrupt axisymmetric contractions: Interaction of inertia and elasticity
26. Extensional flow of a polystyrene Boger fluid through a 4:1:4 axisymmetric contraction/expansion
27. Untersuchung des Fliessverhaltens von Polyethylenschmelzen mit Hilfe der Laser-Doppler Anemometrie
28. Setup and test of a laser-doppler velocimeter for investigations of flow behavior of polymer melts
29. The strain-hardening behavior of linear and long-chain-branched polyolefin melts in extensional flows
30. Strömungsuntersuchungen mit der Laser-Doppler Anemometrie bei der Extrusion von Polyethylenschmelzen
31. Entry flow of a PE-LD melt into a slit die: An experimental study by laser-Doppler velocimetry
32. Flow patterns in polyethylene and polystyrene melts during extrusion through a die entry region: Measurement and interpretation
33. Flow visualization and birefringence studies on planar entry flow behavior of polymer melts
34. Three-dimensional numerical simulations of viscoelastic flows through planar contractions