A Network Analysis of a Screw Mixing Zone
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C. Klason
Abstract
Starting from our previous results concerning the melt flow during the dispersive mixing zones of Maddock and Egan type, one establishes relations for the pressure variation, appropriate for incremental calculation. Because generally the melt flow along the mixing zone is non-isothermal, one establishes relations for the temperature variation along the mixing zone, namely: temperature variation caused by external heating, by internal friction, by external friction and due to melt compressibility.
By using the established relations one develops a network procedure for pressure and temperature variation calculation along the mixing zone. The computer program based on the network procedure was used to calculate a usual mixing zone for a 63.5 mm extruder-screw. The program gives the possibility to represent the pressure and temperature variation between the inlet and the outlet of the mixing zone. This is useful when we are interested in the optimum design of such mixing zones.
© 2000, Carl Hanser Verlag, Munich
Artikel in diesem Heft
- Editorial
- Sixth of a Series: Pioneer of Man-Made Fibers and Solution Spinning Louis-Marie-Hilaire Bernigaud, Comte de Chardonnet
- Screw Extrusion
- A Network Analysis of a Screw Mixing Zone
- Experimental and Numerical Study of Rhomboidal Mixing Sections
- Reactive Extrusion
- Bulk Polymerization of ∊-Caprolactone in Twin Screw Extruder
- Die Extrusion
- Computer Aided Optimisation of Profile Extrusion Dies
- Fibers and Films
- An Investigation of Venturi and Coanda Effects in Blown Film Cooling
- Blends
- Solidification Behaviour of PA6/iPP Blends at High Cooling Rates
- Polymer Blends with Fibrillar Phase Morphology Prepared by Self-Reinforcing Technique
- Molding
- Compressive Squeeze Flow of Generalized Newtonian Fluids with Apparent Wall Slip
- Comparative Study of Ziegler-Natta and Metallocene Based Polypropylenes in Injection Molding
- The Pressure-Volume-Temperature Behavior Polyethylene Melts
- Evaluation of the Thermal Behaviour of Injection Moulds
- Polymer Solidification under Pressure and High Cooling Rates
Artikel in diesem Heft
- Editorial
- Sixth of a Series: Pioneer of Man-Made Fibers and Solution Spinning Louis-Marie-Hilaire Bernigaud, Comte de Chardonnet
- Screw Extrusion
- A Network Analysis of a Screw Mixing Zone
- Experimental and Numerical Study of Rhomboidal Mixing Sections
- Reactive Extrusion
- Bulk Polymerization of ∊-Caprolactone in Twin Screw Extruder
- Die Extrusion
- Computer Aided Optimisation of Profile Extrusion Dies
- Fibers and Films
- An Investigation of Venturi and Coanda Effects in Blown Film Cooling
- Blends
- Solidification Behaviour of PA6/iPP Blends at High Cooling Rates
- Polymer Blends with Fibrillar Phase Morphology Prepared by Self-Reinforcing Technique
- Molding
- Compressive Squeeze Flow of Generalized Newtonian Fluids with Apparent Wall Slip
- Comparative Study of Ziegler-Natta and Metallocene Based Polypropylenes in Injection Molding
- The Pressure-Volume-Temperature Behavior Polyethylene Melts
- Evaluation of the Thermal Behaviour of Injection Moulds
- Polymer Solidification under Pressure and High Cooling Rates
