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Modelling of Capillary Rheometer Data and Extrapolation of the Viscosity Function into the Linear Viscoelastic Region
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A. Göttfert
Published/Copyright:
June 6, 2013
Abstract
3- and 4 parameter models (Carreau-Winter, Sabia, Yasuda) are used for fitting capillary rheometer tests. These fitted data are then compared with rotational visco-simeter test data in the region of small deformation speeds. The results clearly demonstrate that the extrapolated capillary rheometer data acc. to the Sabia and Yasuda models yield good practice-relevant results. A good correlation was achieved between the calculated “zero viscosity” and the mean molecular mass and between the model curvature parameters and the width of the molecular mass distribution. For quality assurance in laboratory rheometery and on-line rheometry these obtained good results are of high importance.
Accepted: 1998-10-29
Published Online: 2013-06-06
Published in Print: 1999-03-01
© 1999, Carl Hanser Verlag, Munich
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Articles in the same Issue
- Regular Contributed Articles
- Polymer Processing Problems from Non-Rheological Causes1
- Utilization of Rheology Control to Develop Wood-Grain Patterned PVC/Wood Flour Composites
- Screw Drive Power of Single Screw Plasticating Units With Smooth Barrels
- Design of Dispersive Mixing Devices
- Dynamic Performance of Single-Screws of Different Configurations
- A Comparative Study of Residence Time Distributions in a Kneader, Continuous Mixer, and Modular Intermeshing Co-Rotating and Counter-Rotating Twin Screw Extruders
- Influence of a ‘Rotating Tip’ on the Properties of Tubing Made Using a Cross-Head Tubing Die
- Modelling of Capillary Rheometer Data and Extrapolation of the Viscosity Function into the Linear Viscoelastic Region
- Relationship Between Structure and Spinning Processing of As-Spun PP Fibres
- Rheological and Theoretical Estimation of the Spinnability of Polyolefines
- Drawing of β-Crystal Nucleator-Added PP
- Wave Behavior in the Coating Process of Multilayer Polymeric Materials
- Process Optimization of Thermoforming PP/CaCO3 Composites
- A Stiffness Criterion For Cooling Time Estimation
