Experimental Study for Extrusion of Polypropylene/Wood Flour Composites
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K. Wilczyński
Abstract
Experimental studies have been carried out for single screw extrusion of PP/wood flour composite of different concentrations of wood flour. A “screw pull-out” technique was used for investigation of the material transport, melting and screw filling. The effect of the screw speed was investigated. It was concluded that WPC extrusion is substantially different from thermoplastics extrusion. Material transport and melting are strongly dependent on the WPC composition, and operating conditions. The contiguous solids melting mechanism CSM is not observed for WPC of high WF content; however, it may be observed for WPC of lower WF content, up to 50% WF. Several steps of the process are distinguished: material compaction in the solid conveying section close to the active flight and then spreading to the rest of the material, melting which is strongly dependent on the material composition, and shear or plug flow with slipping at the walls in the melt conveying section.
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© 2015, Carl Hanser Verlag, Munich
Artikel in diesem Heft
- Contents
- Contents
- Regular Contributed Articles
- Extrusion Defects and Flow Instabilities of Molten Polymers
- Investigating Thermal Stability and Flame Retardant Properties of Synthesized Halloysite Nanotubes (HNT)/Ethylene Propylene Diene Monomer (EPDM) Nanocomposites
- Absorption Coefficient Measurement in Laser Transmission Welding of Thermoplastics
- Styrene/Isoprene/Styrene Thermoplastic Elastomer Prepared by Anionic Bulk Polymerization in a Twin-Screw Extruder
- Improving Film Die Flow Uniformity Using Optimization Methods Coupled with Finite Element Computational Fluid Dynamics (CFD) Analysis
- UV-Curable Technique of Magnetic Roller Soft Mold and Microstructure Pattern Replication
- Rheological Indicators for Environmental Stress Cracking Resistance of Polyethylene
- Effect of Alumina Particles Embedded in Natural Rubber Foams on Cell Morphology and Thermo-Mechanical Properties
- Effects of SEBS-g-MA on Rheology, Morphology and Mechanical Properties of PET/HDPE Blends
- Measurement and Numerical Simulation of Void and Warpage in Glass Fiber Reinforced Molded Chunky Parts
- Experimental Study for Extrusion of Polypropylene/Wood Flour Composites
- A Personal Perspective on the Use of Modelling Simulation for Polymer Melt Processing
- Slip Heating in Die Drool with Viscous Dissipation
- PPS News
- PPS News
- Seikei Kakou Abstracts
- Seikei Kakou Abstracts
Artikel in diesem Heft
- Contents
- Contents
- Regular Contributed Articles
- Extrusion Defects and Flow Instabilities of Molten Polymers
- Investigating Thermal Stability and Flame Retardant Properties of Synthesized Halloysite Nanotubes (HNT)/Ethylene Propylene Diene Monomer (EPDM) Nanocomposites
- Absorption Coefficient Measurement in Laser Transmission Welding of Thermoplastics
- Styrene/Isoprene/Styrene Thermoplastic Elastomer Prepared by Anionic Bulk Polymerization in a Twin-Screw Extruder
- Improving Film Die Flow Uniformity Using Optimization Methods Coupled with Finite Element Computational Fluid Dynamics (CFD) Analysis
- UV-Curable Technique of Magnetic Roller Soft Mold and Microstructure Pattern Replication
- Rheological Indicators for Environmental Stress Cracking Resistance of Polyethylene
- Effect of Alumina Particles Embedded in Natural Rubber Foams on Cell Morphology and Thermo-Mechanical Properties
- Effects of SEBS-g-MA on Rheology, Morphology and Mechanical Properties of PET/HDPE Blends
- Measurement and Numerical Simulation of Void and Warpage in Glass Fiber Reinforced Molded Chunky Parts
- Experimental Study for Extrusion of Polypropylene/Wood Flour Composites
- A Personal Perspective on the Use of Modelling Simulation for Polymer Melt Processing
- Slip Heating in Die Drool with Viscous Dissipation
- PPS News
- PPS News
- Seikei Kakou Abstracts
- Seikei Kakou Abstracts