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Effects of Interfacial Conditions on Wall Slip and Sharkskin Melt Fracture of HDPE
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S. G. Hatzikiriakos
Veröffentlicht/Copyright:
27. Mai 2013
Abstract
Experiments were performed in capillary and slit rheometers to determine the effects of the presence of fluoropolymers at the polymer-wall interface on wall slip and extrudate distortion of a molten high density polyethylene. Two fluoropolymers were used to modify the interface. It was found that one of these decreased slip compared to the clean interface while the other increased slip. However, both were found to improve extrudate appearance, thus indicating that both adhesion promoters and slip promoters may improve extrudate appearance. The mechanism underlying this rather surprising conclusion is also discussed.
Received: 1992-4-3
Accepted: 1992-6-19
Published Online: 2013-05-27
Published in Print: 1993-03-01
© 1993, Carl Hanser Verlag, Munich
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Artikel in diesem Heft
- Contents
- Contents
- Invited Paper
- The Challenges of Waste Toward the 21st Century
- Internal Mixers
- Simulation of 3-Dimensional Flow in Internal Mixers
- Die Extrusion
- Effect of Surface Coatings on Wall Slip of LLDPE
- Effects of Interfacial Conditions on Wall Slip and Sharkskin Melt Fracture of HDPE
- Reactive Processing
- Maleation of Polypropylene Melt in Model Reactors
- Film
- Modeling of Non-isothermal Film Blowing with Integral Constitutive Equations
- Non-isothermal Crystallization of a Polymer Film on Chilling Rolls
- Molding
- A Process to Produce Microcellular PVC
- Orientation Development of Mixed Anisotropic Particles in Compounds
Artikel in diesem Heft
- Contents
- Contents
- Invited Paper
- The Challenges of Waste Toward the 21st Century
- Internal Mixers
- Simulation of 3-Dimensional Flow in Internal Mixers
- Die Extrusion
- Effect of Surface Coatings on Wall Slip of LLDPE
- Effects of Interfacial Conditions on Wall Slip and Sharkskin Melt Fracture of HDPE
- Reactive Processing
- Maleation of Polypropylene Melt in Model Reactors
- Film
- Modeling of Non-isothermal Film Blowing with Integral Constitutive Equations
- Non-isothermal Crystallization of a Polymer Film on Chilling Rolls
- Molding
- A Process to Produce Microcellular PVC
- Orientation Development of Mixed Anisotropic Particles in Compounds
