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Abnormal Behaviors in the Capillary Rheometry of Plastisol Formulations

  • Y. Demay , Y. Abdesselam , R. Castellani and J. F. Agassant
Published/Copyright: June 18, 2018
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International Polymer Processing
From the journal International Polymer Processing Volume 33 Issue 3

Abstract

The rheology of plastisol formulations for flooring applications using knife-over-roll coating process is studied using both Couette and capillary rheometers. The behavior is similar in many aspects to the rheology of suspensions: Shear thinning behavior at low shear rate, then a Newtonian plateau at intermediate shear rates followed by a dilatancy peak. However several abnormal phenomena may be observed in capillary experiments. At very high shear rates, a second shear thinning behavior is observed which depends on the flow geometry. Due to the non-monotonous behavior of the plastisol viscosity, this is analysed using a dedicated numerical method. An apparent slip velocity has been determined. Otherwise capillary experiments point out the existence of important entrance pressure loss. These measures are interpreted using a modified Cogswell method as an important elongationnal viscosity, around hundred times the shear viscosity.

*Correspondence address, Mail address: Romain Castellani, MINES ParisTech, PSL – Research University, CEMEF – Center for Material Forming, CNRS UMR 7635, 06904 Sophia Antipolis, France, E-mail:

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Received: 2017-07-26
Accepted: 2017-12-28
Published Online: 2018-06-18
Published in Print: 2018-07-29

© 2018, Carl Hanser Verlag, Munich

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  1. Contents
  2. Contents
  3. Editorial
  4. Editorial
  5. Special Issue Contributions
  6. Preparation of Poly(l-lactic acid) Scaffolds by Thermally Induced Phase Separation: Role of Thermal History
  7. Modification of Syndiotactic Polypropylene with Nano-Calcium Carbonate and Halloysite
  8. Enhancement of Heat Seal Properties of Polypropylene Films by Elastomer Incorporation
  9. Flow-Induced Crystallization of Polyamide-6
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  11. Morphology in Multilayer Blown Films of Polypropylene and Ethylene-Octene Copolymer Blends
  12. A Criterion for the Formation of Fibrillar Layers in Injection Molded Parts
  13. Abnormal Behaviors in the Capillary Rheometry of Plastisol Formulations
  14. The Effect of Cellulose Nanocrystals (CNC) on Isothermal Crystallization Kinetics of LLDPE and HDPE
  15. A Rheological Investigation of the Crystallization Kinetics of Syndiotactic Polypropylene of Varying Degree of Tacticity
  16. Effect of Mutual Interaction between High and Low Stereo-Regularity Components on Structure Formation in Melt Spinning Process of Isotactic Polypropylene Blend Fibers
  17. Analysis of the No-Flow Criterion Based on Accurate Crystallization Data for the Simulation of Injection Molding of Semi-Crystalline Thermoplastics
  18. Interfacial Tension Properties in Biopolymer Blends: From Deformed Drop Retraction Method (DDRM) to Shear and Elongation Rheology-Application to Blown Film Extrusion
  19. Stress Optical Behavior and Structure Development in Melt Spun PEEK/PEI Blends
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https://doi.org/10.3139/217.3554

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Editorial
  5. Special Issue Contributions
  6. Preparation of Poly(l-lactic acid) Scaffolds by Thermally Induced Phase Separation: Role of Thermal History
  7. Modification of Syndiotactic Polypropylene with Nano-Calcium Carbonate and Halloysite
  8. Enhancement of Heat Seal Properties of Polypropylene Films by Elastomer Incorporation
  9. Flow-Induced Crystallization of Polyamide-6
  10. PLA Crystallization Kinetics and Morphology Development
  11. Morphology in Multilayer Blown Films of Polypropylene and Ethylene-Octene Copolymer Blends
  12. A Criterion for the Formation of Fibrillar Layers in Injection Molded Parts
  13. Abnormal Behaviors in the Capillary Rheometry of Plastisol Formulations
  14. The Effect of Cellulose Nanocrystals (CNC) on Isothermal Crystallization Kinetics of LLDPE and HDPE
  15. A Rheological Investigation of the Crystallization Kinetics of Syndiotactic Polypropylene of Varying Degree of Tacticity
  16. Effect of Mutual Interaction between High and Low Stereo-Regularity Components on Structure Formation in Melt Spinning Process of Isotactic Polypropylene Blend Fibers
  17. Analysis of the No-Flow Criterion Based on Accurate Crystallization Data for the Simulation of Injection Molding of Semi-Crystalline Thermoplastics
  18. Interfacial Tension Properties in Biopolymer Blends: From Deformed Drop Retraction Method (DDRM) to Shear and Elongation Rheology-Application to Blown Film Extrusion
  19. Stress Optical Behavior and Structure Development in Melt Spun PEEK/PEI Blends
  20. PPS News
  21. PPS News
  22. Seikei Kakou Abstracts
  23. Seikei-Kakou Abstracts
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