Abnormal Behaviors in the Capillary Rheometry of Plastisol Formulations
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Y. Demay
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.
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© 2018, Carl Hanser Verlag, Munich
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Editorial
- Special Issue Contributions
- Preparation of Poly(l-lactic acid) Scaffolds by Thermally Induced Phase Separation: Role of Thermal History
- Modification of Syndiotactic Polypropylene with Nano-Calcium Carbonate and Halloysite
- Enhancement of Heat Seal Properties of Polypropylene Films by Elastomer Incorporation
- Flow-Induced Crystallization of Polyamide-6
- PLA Crystallization Kinetics and Morphology Development
- Morphology in Multilayer Blown Films of Polypropylene and Ethylene-Octene Copolymer Blends
- A Criterion for the Formation of Fibrillar Layers in Injection Molded Parts
- Abnormal Behaviors in the Capillary Rheometry of Plastisol Formulations
- The Effect of Cellulose Nanocrystals (CNC) on Isothermal Crystallization Kinetics of LLDPE and HDPE
- A Rheological Investigation of the Crystallization Kinetics of Syndiotactic Polypropylene of Varying Degree of Tacticity
- Effect of Mutual Interaction between High and Low Stereo-Regularity Components on Structure Formation in Melt Spinning Process of Isotactic Polypropylene Blend Fibers
- Analysis of the No-Flow Criterion Based on Accurate Crystallization Data for the Simulation of Injection Molding of Semi-Crystalline Thermoplastics
- Interfacial Tension Properties in Biopolymer Blends: From Deformed Drop Retraction Method (DDRM) to Shear and Elongation Rheology-Application to Blown Film Extrusion
- Stress Optical Behavior and Structure Development in Melt Spun PEEK/PEI Blends
- PPS News
- PPS News
- Seikei Kakou Abstracts
- Seikei-Kakou Abstracts
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Editorial
- Special Issue Contributions
- Preparation of Poly(l-lactic acid) Scaffolds by Thermally Induced Phase Separation: Role of Thermal History
- Modification of Syndiotactic Polypropylene with Nano-Calcium Carbonate and Halloysite
- Enhancement of Heat Seal Properties of Polypropylene Films by Elastomer Incorporation
- Flow-Induced Crystallization of Polyamide-6
- PLA Crystallization Kinetics and Morphology Development
- Morphology in Multilayer Blown Films of Polypropylene and Ethylene-Octene Copolymer Blends
- A Criterion for the Formation of Fibrillar Layers in Injection Molded Parts
- Abnormal Behaviors in the Capillary Rheometry of Plastisol Formulations
- The Effect of Cellulose Nanocrystals (CNC) on Isothermal Crystallization Kinetics of LLDPE and HDPE
- A Rheological Investigation of the Crystallization Kinetics of Syndiotactic Polypropylene of Varying Degree of Tacticity
- Effect of Mutual Interaction between High and Low Stereo-Regularity Components on Structure Formation in Melt Spinning Process of Isotactic Polypropylene Blend Fibers
- Analysis of the No-Flow Criterion Based on Accurate Crystallization Data for the Simulation of Injection Molding of Semi-Crystalline Thermoplastics
- Interfacial Tension Properties in Biopolymer Blends: From Deformed Drop Retraction Method (DDRM) to Shear and Elongation Rheology-Application to Blown Film Extrusion
- Stress Optical Behavior and Structure Development in Melt Spun PEEK/PEI Blends
- PPS News
- PPS News
- Seikei Kakou Abstracts
- Seikei-Kakou Abstracts
