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Effect of Pressure and Shear Stress on Crystallization Behaviors in Injection Molding
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H. Ito
Veröffentlicht/Copyright:
28. Mai 2013
Abstract
We studied in detail the effects of pressure and shear stress on the crystallization behaviors during injection molding process. Crystallization of isotactic-polypropylene (iPP) was simulated for various injection flow rates. The crystallization started during the filling stage under long filling condition. Moreover, the crystallization in some layers showed two -step growth behavior, while in other layers the crystallization does not progress during the packing -cooling stage. Since pressure becomes very high during molding process under long filling time condition, the change of pressure is the most important factor governing the crystallization.
Received: 1996-2-6
Accepted: 1996-5-17
Published Online: 2013-05-28
Published in Print: 1996-12-01
© 1996, Carl Hanser Verlag, Munich
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Artikel in diesem Heft
- Contents
- Contents
- Editorial
- First in a Series: Pioneers of Polymer Processing: Thomas Hancock – The First Polymer Processing Innovator
- Mixing
- The Extensional Flow Mixer, EFM
- Reactive Extrusion
- Continuous Polymerization of Caprolactam-Polyether Sulfone Solutions in a Twin Screw Extruder to Form Reactive Polyamide–6/Polyether Sulfone Blends and Their Melt Spun Fibers
- Biodegradable Poly(Lactic Acid) with High Molecular Weight
- Acceleration of Chemical Reaction in Reactive Extrusion Accompained by Devolatilization
- Fibers and Films
- Viscous-Elastic Effects in a PA 6 Melt – Cause of Unevennesses in Melt-Spun Yarns**
- Gear Pump Performance in Polypropylene Filament Yarn Uniformity
- Molding
- Physically-Based Model of Thermoplastics Injection Molding for Control Applications
- Effect of Pressure and Shear Stress on Crystallization Behaviors in Injection Molding
- The Crystallinity of PVC and its Effect on Physical Properties**
- Molecular Orientation in Polycarbonate Induced by Cooling Stresses
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- First in a Series: Pioneers of Polymer Processing: Thomas Hancock – The First Polymer Processing Innovator
- Mixing
- The Extensional Flow Mixer, EFM
- Reactive Extrusion
- Continuous Polymerization of Caprolactam-Polyether Sulfone Solutions in a Twin Screw Extruder to Form Reactive Polyamide–6/Polyether Sulfone Blends and Their Melt Spun Fibers
- Biodegradable Poly(Lactic Acid) with High Molecular Weight
- Acceleration of Chemical Reaction in Reactive Extrusion Accompained by Devolatilization
- Fibers and Films
- Viscous-Elastic Effects in a PA 6 Melt – Cause of Unevennesses in Melt-Spun Yarns**
- Gear Pump Performance in Polypropylene Filament Yarn Uniformity
- Molding
- Physically-Based Model of Thermoplastics Injection Molding for Control Applications
- Effect of Pressure and Shear Stress on Crystallization Behaviors in Injection Molding
- The Crystallinity of PVC and its Effect on Physical Properties**
- Molecular Orientation in Polycarbonate Induced by Cooling Stresses
