A study of entrance pressure loss in filled polymer melts

Applied Rheology

Volumn 17, Issue 5, 2007, Pages

  Hristov, Velichko ^a,b   Vlachopoulos, John ^a  

^a MCMASTER UNIVERSITY   (Canada)

^b BOREALIS POLYOLEFINE GMBH   (Austria)

Author keywords

Entrance pressure loss; Entry flow; Viscosity; Wood fiber composites

Indexed keywords

MOLECULAR STRUCTURE; MOLECULAR WEIGHT DISTRIBUTION; POLYETHYLENES; POLYMER MELTS; PRESSURE DROP; TALC; WOOD;

EID: 36549021029     PISSN: 14306395     EISSN: None     Source Type: Journal    
DOI: 10.1515/arh-2007-0019     Document Type: Article

References (36)

1. Bagley EB: End corrections in the capillary flow of polyethylene, J. Appl. Physics 28 (1957) 624-627.
2. Bagley EB, Birks RM: Flow of polyethylene into a capillary, J. Appl. Physics 31 (1960) 556-561.
3. Dealy JM, Wissburn KF: Melt rheology and its role in plastics processing, Van Nostrand Reinhold (1990).
4. White JL, Kondo A: Flow patterns in polyethylene and polystyrene melts during extrusion through a die entry region: Measurement and interpretation, J. Non-Newt. Fluid Mech. 3 (1970) 41-64.
5. Mitsoulis E, Schwetz M, Münstedt H: Entry flow of LDPE melts in a planar contraction, J. Non-Newt. Fluid Mech. 111 (2003) 41-61.
6. Mitsoulis E, Hatzikiriakos SG: Bagley Correction: The effect of contraction angle and its prediction, Rheol. Acta 42 (2003) 309-320.
7. Feigl K, Öttinger HC: Investigation of die entry flows of polymer melts, Appl. Rheol. 6 (1996) 59-66.
8. Mitsoulis E, Vlachopoulos J, Mirza FA: A numerical study of the effect of normal stresses and elongational viscosity on entry vortex growth and extrudate swell, Polym. Eng. Sci. 25 (1985) 677-689.
9. Dupont S, Crochet MJ: The vortex growth of a K.B.K.Z. fluid in an abrupt contraction, J. Non-Newt. Fluid Mech. 29 (1988) 81-91.
10. Luo XL, Mitsoulis E: A numerical study of the effect of elongational viscosity on vortex growth Rheol. 34 (1990) 309-342.
11. Mitsoulis E: Numerical simulation of entry flow of the IUPAC-LDPE melt, J. Non-Newt. Fluid Mech. 97 (2001) 13-30.
12. Cogswell FN: Measuring the extensional rheology of polymer melts, J. Rheol. 16 (1972) 383-403.
13. Shroff RN, Cancio LV, Shida M: Extensional flow of polymer melts, J. Rheol. 21 (1977) 429-446.
14. Binding DM, Walters K: On the use of flow through a contraction in estimating the extensional viscosity of mobile polymer solutions, J. Non-Newt. Fluid. Mech. 30 (1988) 233-250.
15. Chauveteau G, Moan M, Magueur A: Thickening behaviour of dilute polymer solutions in Non-inertial elongational flows, J. Non-Newt. Fluid Mech. 16 (1984) 315-327.
16. Kwag C, Vlachopoulos J: An assessment of Cogswell's method for measurement of extensional viscosity, Polym. Eng. Sci. 31 (1991) 1015-1021.
17. Laun HM, Schuch H: Transient elongatiopal viscosities and drawability of polymer melts, J. Rheol. 33 (1989) 119-175.
18. Han CD, Charles M, Philippoff W: Rheological implications of the exit pressure and die swell in steady capillary flow of polymer melts. I. The primary normal stress difference and the effect of L/D Ratio on elastic properties, J. Rheol. 14 (1970) 393-408.
19. Bailey RS, Groves DJ: Characterization of finite length composites: Part VI - Rheological studies of materials based on the polypropylene matrix, Pure and Appl. Chem. 69 (1997) 2541-2565.
20. Crowson RJ, Folkes MJ, Bright PF: Rheology of short glass fiber-reinforced thermoplastics and its application to injection molding I. Fiber motion and viscosity measurement, Polym. Eng. Sci 20 (1980) 925-933.
21. Chan Y, White JL, Oyanagi Y: Influence of glass fibers on the extrusion and injection molding characteristics of polyethylene and polystyrene melts, Polym. Eng. Sci. 18 (1978) 268-272.
22. Guo R, Azaiez J, Bellehumeur C: Rheology of fiber filled polymer melts: Role of fiber-fiber interactions and polymer-fiber coupling, Polym. Eng. Sci. 45 (2005) 385-399.
23. Laun HM: Orientation effects and rheology of short glass fiber-reinforced thermoplastics, Colloid and Polym. Sci. 262 (1984) 257-269.
24. Laun HM: Das viskoelastische verhalten von polyamid-6-schmelzen, Rheol.Acta 18 (1979) 478-491.
25. Liang JZ: Effects of particle size on melt viscoelastic properties during capillary extrusion of glass bead-filled LDPE composites, J. Thermoplast. Comp. Mater. 19 (2006) 703-713.
26. White JL, Crowder JW: The influence of carbon black on the extrusion characteristics and rheological properties of elastomers: Polybutadiene and butadiene-styrene copolymer, J. Appl. Polym. Sci. 18 (1974) 1013-1038.
27. Minagawa N, White JL: The influence of titanium dioxide on the rheological and extrusion properties of polymer melts, J. Appl. Polym. Sci. 20 (1976) 501-523.
28. Hristov V, Takacs E, Vlachopoulos J: Surface tearing and wall slip phenomena in extrusion of highly filled HDPE/Wood flour composites, Polym. Eng. Sci. 46 (2006) 1204-1214.
29. Hatzikiriakos SG, Mitsoulis E: Excess pressure loss in the capillary flow of molten polymers, Rheol. Acta 36 (1996) 545-555.
30. Kim S, Dealy JM: Design of an orifice die to measure entrance pressure drop, J. Rheol. 45 (2001) 1413-1419.
31. Denn MM: Extrusion instabilities and wall slip, Annu. Rev. Fluid Mech. 33 (2001) 265-287.
32. Macosko C.W: Rheology-Principles, measurements, and applications, VCH Publ. (1994).
33. Thomasset J, Carreau PJ, Sanschagrin B,Ausias G: Rheological properties of long glass fiber filled polypropylene, J. Non-Newt. Fluid Mech. 125 (2005) 25-34.
34. Balasuriya PW, Ye L, Mai YW: Mechanical properties of wood flake - polyethylene composites. Part I: Effects of processing methods and matrix melt flow behavior, Composites, Part A, 32 (2001) 619-629.
35. Li TO, Wolcott MP: Rheology of HDPE - wood composites. I. Steady state shear and extensional flow, Composites, Part A 35 (2004) 303-311.
36. Han CD: Multiphase flow in polymer processing, Academic press, (1981).