A Study of Entrance Pressure Loss in Filled Polymer Melts Conferences

abstract

• Abstract The influence of the molecular structure of the polymer matrix and filler loading on the entrance pressure loss of polyethylene/wood flour composites has been investigated in this research by means of a capillary rheometer equipped with an orifice die. The entry flow of talc- and glass-filled polyethylene composites has been investigated as well. It was found that the entrance pressure loss of wood filled polyethylene composites greatly increased with increasing the wood flour loading. Talc and solid glass spheres also increase the entrance pressure loss, however not as much as wood flour. It was also observed that composites based on narrow molecular weight distribution (MWD) resins exhibited larger entrance pressure loss than the broad MWD and branched polyethylene based ones. It was concluded that measurements of the entrance pressure loss reveal some interesting features of the polymer-filler interactions and could provide significant insights in the processing of highly filled polymer melts.

authors

• Hristov, Velichko
• Vlachopoulos, John

status

• published 

publication date

• October 1, 2007

has subject area

• 0904 Chemical Engineering (FoR)
• 0912 Materials Engineering (FoR)
• 0913 Mechanical Engineering (FoR)
• Polymers (Science Metrix)

published in

• Applied Rheology  Journal

presented at event

• Rheology Workshop 2007  Conference

keywords

• CAPILLARY-FLOW
• ELONGATIONAL VISCOSITY
• ENTRY FLOW
• EXTENSIONAL VISCOSITY
• EXTRUSION
• FIBER-REINFORCED THERMOPLASTICS
• Mechanics
• POLYSTYRENE MELTS
• RHEOLOGICAL PROPERTIES
• Science & Technology
• Technology
• VORTEX GROWTH
• WALL SLIP
• entrance pressure loss
• entry flow
• viscosity
• wood fiber composites

Digital Object Identifier (DOI)

• 10.1515/arh-2007-0019

volume

• 17

issue

• 5