Velocity Distribution of Extensional Flow Fields in an Eccentric Cylinder of an Extensional Extruder. Issue 11 (2nd December 2018)

• Record Type: Journal Article
• Authors: Huang, Zan; Luo, Peifang; Tong, Junjie; Su, Fa
• Is Part Of: Journal of macromolecular science. Volume 57:Issue 11/12(2018)
• Page Start: 732
• Page End: 745
• Publication Date: 2018-12-02
• Subjects: Bipolar cylindrical coordinates -- extensional extruder -- extensional flow field -- extruder velocity distribution -- Newtonian fluids -- power-law fluids; Polymerization -- Periodicals; Polymers -- Periodicals; 530.413
• DOI: 10.1080/00222348.2018.1527517
• Languages: English
• ISSNs: 0022-2348

Abstract

Abstract: The extensional extruder is a novel method of polymer processing which generates high elongation stress within a polymer. A mathematical model is proposed which describes the velocity distribution during polymer processing in such an extruder. The modeling results indicate that the dimensionless velocity profiles for power-law fluids decrease as the power-law index increases. Overall, the extensional extruder has an advantage for dispersion effects over traditional screw extruders based on the extensional rheology.