Schmelzrheologie und ihre Rolle in der Kunststoffverarbeitung: Theorie und Anwendungen von K.

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Melt Rheology and Its Role in Plastics Processing

by K.F. Wissbrun, John M. Dealy

The audience also includes post-graduate students in polymer science and engineering who wish to acquire a more extensive background in rheology and perhaps become specialists in this area.

FORMAT Paperback LANGUAGE English CONDITION Brand New

Publisher Description

In this comprehensive book, plastics engineers, designers and manufacturers discover how to exploit the latest techniques of measuring the rheological properties of molten and viscoelastic plastics. The role of polymer rheology is fully examined in various melt processing operations, along with specialized areas.

Notes

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Table of Contents

1. Introduction to Rheology.- 1.1 What is Rheology?.- 1.2 Why Rheological Properties are Important.- 1.3 Stress as a Measure of Force.- 1.4 Strain as a Measure of Deformation.- 1.4.1 Strain Measures for Simple Extension.- 1.4.2 Shear Strain.- 1.5 Rheological Phenomena.- 1.5.1 Elasticity; Hooke's Law.- 1.5.2 Viscosity.- 1.5.3 Viscoelasticity.- 1.5.4 Structural Time Dependency.- 1.5.5 Plasticity and Yield Stress.- 1.6 Why Polymeric Liquids are Non-Newtonian.- 1.6.1 Polymer Solutions.- 1.6.2 Molten Plastics.- 1.7 A Word About Tensors.- 1.7.1 Vectors.- 1.7.2 What is a Tensor?.- 1.8 The Stress Tensor.- 1.9 A Strain Tensor for Infinitesimal Deformations.- 1.10 The Newtonian Fluid.- 1.11 The Basic Equations of Fluid Mechanics.- 1.11.1 The Continuity Equation.- 1.11.2 Cauchy's Equation.- 1.11.3 The Navier-Stokes Equation.- References.- 2. Linear Viscoelasticity.- 2.1 Introduction.- 2.2 The Relaxation Modulus.- 2.3 The Boltzmann Superposition Principle.- 2.4 Relaxation Modulus of Molten Polymers.- 2.5 Empirical Equations for the Relaxation Modulus.- 2.5.1 The Generalized Maxwell Model.- 2.5.2 Power Laws and an Exponential Function.- 2.6 The Relaxation Spectrum.- 2.7 Creep and Creep Recovery; The Compliance.- 2.8 Small Amplitude Oscillatory Shear.- 2.8.1 The Complex Modulus and the Complex Viscosity.- 2.8.2 Complex Modulus of Typical Molten Polymers.- 2.8.3 Quantitative Relationships between G*(?) and MWD.- 2.8.4 The Storage and Loss Compliances.- 2.9 Determination of Maxwell Model Parameters.- 2.10 Start-Up and Cessation of Steady Simple Shear and Extension.- 2.11 Molecular Theories: Prediction of Linear Behavior.- 2.11.1 The Modified Rouse Model for Unentangled Melts.- 2.11.1.1 The Rouse Model for Dilute Solutions.- 2.11.1.2 The Bueche Modification of the Rouse Theory.-2.11.1.3 The Bueche-Ferry Law.- 2.11.2 Molecular Theories for Entangled Melts.- 2.11.2.1 Evidence for the Existence of Entanglements.- 2.11.2.2 The Nature of Entanglement Coupling.- 2.11.2.3 Reptation.- 2.11.2.4 The Doi-Edwards Theory.- 2.11.2.5 The Curtiss-Bird Model.- 2.11.2.6 Limitations of Reptation Models.- 2.12 Time-Temperature Superposition.- 2.13 Linear Behavior of Several Polymers.- References.- 3. Introduction to Nonlinear Viscoelasticity.- 3.1 Introduction.- 3.2 Nonlinear Phenomena.- 3.3 Theories of Nonlinear Behavior.- 3.4 Finite Measures of Strain.- 3.4.1 The Cauchy Tensor and the Finger Tensor.- 3.4.2 Strain Tensors.- 3.4.3 Reference Configurations.- 3.4.4 Scalar Invariants of the Finger Tensor.- 3.5 The Rubberlike Liquid.- 3.5.1 A Theory of Finite Linear Viscoelasticity.- 3.5.2 Lodge's Network Theory and the Convected Maxwell Model.- 3.5.3 Behavior of the Rubberlike Liquid in Simple Shear Flows.- 3.5.3.1 Rubberlike Liquid in Step Shear Strain.- 3.5.3.2 Rubberlike Liquid in Steady Simple Shear.- 3.5.3.3 Rubberlike Liquid in Oscillatory Shear.- 3.5.3.4 Constrained Recoil of Rubberlike Liquid.- 3.5.3.5 The Stress Ratio (N1/?) and the Recoverable Shear.- 3.5.4 The Rubberlike Liquid in Simple Extension.- 3.5.5 Comments on the Rubberlike Liquid Model.- 3.6 The BKZ Equation.- 3.7 Wagner's Equation and the Damping Function.- 3.7.1 Strain Dependent Memory Function.- 3.7.2 Determination of the Damping Function.- 3.7.3 Separable Stress Relaxation Behavior.- 3.7.4 Damping Function Equations for Polymeric Liquids.- 3.7.4.1 Damping Function for Shear Flows.- 3.7.4.2 Damping Function for Simple Extension.- 3.7.4.3 Universal Damping Functions.- 3.7.5 Interpretation of the Damping Function in Terms of Entanglements.- 3.7.5.1 The Irreversibility Assumption.- 3.7.6Comments on the Use of the Damping Function.- 3.8 Molecular Models for Nonlinear Viscoelasticity.- 3.8.1 The Doi-Edwards Constitutive Equation.- 3.9 Strong Flows; The Tendency to Stretch and Align Molecules.- References.- 4. Steady Simple Shear Flow and the Viscometric Functions.- 4.1 Introduction.- 4.2 Steady Simple Shear Flow.- 4.3 Viscometric Flow.- 4.4 Wall Slip and Edge Effects.- 4.5 The Viscosity of Molten Polymers.- 4.5.1 Dependence of Viscosity on Shear Rate.- 4.5.2 Dependence of Viscosity on Temperature.- 4.6 The First Normal Stress Difference.- 4.7 Empirical Relationships Involving Viscometric Functions.- 4.7.1 The Cox-Merz Rules.- 4.7.2 The Gleissle Mirror Relations.- 4.7.3 Other Relationships.- References.- 5. Transient Shear Flows Used to Study Nonlinear Viscoelasticity.- 5.1 Introduction.- 5.2 Step Shear Strain.- 5.2.1 Finite Rise Time.- 5.2.2 The Nonlinear Shear Stress Relaxation Modulus.- 5.2.3 Time-Temperature Superposition.- 5.2.4 Strain-Dependent Spectrum and Maxwell Parameters.- 5.2.5 Normal Stress Differences for Single-Step Shear Strain.- 5.2.6 Multistep Strain Tests.- 5.3 Flows Involving Steady Simple Shear.- 5.3.1 Start-Up Flow.- 5.3.2 Cessation of Steady Simple Shear.- 5.3.3 Interrupted Shear.- 5.3.4 Reduction in Shear Rate.- 5.4 Nonlinear Creep.- 5.4.1 Time-Temperature Superposition of Creep Data.- 5.5 Recoil and Recoverable Shear.- 5.5.1 Creep Recovery.- 5.5.1.1 Time-Temperature Superposition; Creep Recovery.- 5.5.2 Recoil During Start-Up Flow.- 5.5.3 Recoverable Shear Following Steady Simple Shear.- 5.6 Superposed Deformations.- 5.6.1 Superposed Steady and Oscillatory Shear.- 5.6.2 Step Strain with Superposed Deformations.- 5.7 Large Amplitude Oscillatory Shear.- 5.8 Exponential Shear; A Strong Flow.- 5.9 Usefulness of Transient Shear Tests.- References.- 6. Extensional Flow Properties and Their Measurement.- 6.1 Introduction.- 6.2 Extensional Flows.- 6.3 Simple Extension.- 6.3.1 Material Functions for Simple Extension.- 6.3.2 Experimental Methods.- 6.3.3 Experimental Observations for LDPE.- 6.3.4 Experimental Observations for Linear Polymers.- 6.4 Biaxial Extension.- 6.5 Planar Extension.- 6.6 Other Extensional Flows.- References.- 7. Rotational and Sliding Surface Rheometers.- 7.1 Introduction.- 7.2 Sources of Error for Drag Flow Rheometers.- 7.2.1 Instrument Compliance.- 7.2.2 Viscous Heating.- 7.2.3 End and Edge Effects.- 7.2.4 Shear Wave Propagation.- 7.3 Cone-Plate Flow Rheometers.- 7.3.1 Basic Equations for Cone-Plate Rheometers.- 7.3.2 Sources of Error for Cone-Plate Rheometers.- 7.3.3 Measurement of the First Normal Stress Difference.- 7.4 Parallel Disk Rheometers.- 7.5 Eccentric Rotating Disks.- 7.6 Concentric Cylinder Rheometers.- 7.7 Controlled Stress Rotational Rheometers.- 7.8 Torque Rheometers.- 7.9 Sliding Plate Rheometers.- 7.9.1 Basic Equations for Sliding Plate Rheometers.- 7.9.2 End and Edge Effects for Sliding Plate Rheometers.- 7.9.3 Sliding Plate Melt Rheometers.- 7.9.4 The Shear Stress Transducer.- 7.10 Sliding Cylinder Rheometers.- References.- 8. Flow in Capillaries, Slits and Dies.- 8.1 Introduction.- 8.2 Flow in a Round Tube.- 8.2.1 Shear Stress Distribution.- 8.2.2 Shear Rate for a Newtonian Fluid.- 8.2.3 Shear Rate for a Power Law Fluid.- 8.2.4 The Rabinowitch Correction.- 8.2.5 The Schümmer Approximation.- 8.2.6 Wall Slip in Capillary Flow.- 8.3 Flow in a Slit.- 8.3.1 Basic Equations for Shear Stress and Shear Rate.- 8.3.2 Use of a Slit Rheometer to Determine N1.- 8.3.2.1 Determination of N1 from the Hole Pressure.- 8.3.2.2 Determination of N1 from the Exit Pressure.- 8.4Pressure Drop in Irregular Cross Sections.- 8.5 Entrance Effects.- 8.5.1 Experimental Observations.- 8.5.2 Entrance Pressure Drop—the Bagley End Correction.- 8.5.3 Rheological Significance of the Entrance Pressure Drop.- 8.6 Capillary Rheometers.- 8.7 Flow in Converging Channels.- 8.7.1 The Lubrication Approximation.- 8.7.2 Industrial Die Design.- 8.8 Extrudate Swell.- 8.9 Extrudate Distortion.- 8.9.1 Surface Melt Fracture—Sharkskin.- 8.9.2 Oscillatory Flow in Linear Polymers.- 8.9.3 Gross Melt Fracture.- 8.9.4 Role of Slip in Melt Fracture.- 8.9.5 Gross Melt Fracture Without Oscillations.- References.- 9. Rheo-Optics and Molecular Orientation.- 9.1 Basic Concepts—Interaction of Light and Matter.- 9.1.1 Refractive Index and Polarization.- 9.1.2 Absorption and Scattering.- 9.1.3 Anisotropic Media; Birefringence and Dichroism.- 9.2 Measurement of Birefringence.- 9.3 Birefringence and Stress.- 9.3.1 Stress-Optical Relation.- 9.3.2 Application of Birefringence Measurements.- References.- 10. Effects of Molecular Structure.- 10.1 Introduction and Qualitative Overview of Molecular Theory.- 10.2 Molecular Weight Dependence of Zero Shear Viscosity.- 10.3 Compliance and First Normal Stress Difference.- 10.4 Shear Rate Dependence of Viscosity.- 10.5 Temperature and Pressure Dependence.- 10.5.1 Temperature Dependence of Viscosity.- 10.5.2 Pressure Dependence of Viscosity.- 10.6 Effects of Long Chain Branching.- References.- 11. Rheology of Multiphase Systems.- 11.1 Introduction.- 11.2 Effect of Rigid Fillers.- 11.2.1 Viscosity.- 11.2.2 Elasticity.- 11.3 Deformable Multiphase Systems (Blends, Block Polymers).- 11.3.1 Deformation of Disperse Phases and Relation to Morphology.- 11.3.2 Rheology of Immiscible Polymer Blends.- 11.3.3 Phase-Separated Block and Graft Copolymers.-References.- 12. Chemorheology of Reacting Systems.- 12.1 Introduction.- 12.2 Nature of the Curing Reaction.- 12.3 Experimental Methods for Monitoring Curing Reactions.- 12.3.1 Dielectric Analysis.- 12.4 Viscosity of the Pre-gel Liquid.- 12.5 The Gel Point and Beyond.- References.- 13. Rheology of Thermotropic Liquid Crystal Polymers.- 13.1 Introduction.- 13.2 Rheology of Low Molecular Weight Liquid Crystals.- 13.3 Rheology of Aromatic Thermotropic Polyesters.- 13.4 Relation of Rheology to Processing of Liquid Crystal Polymers.- References.- 14. Role of Rheology in Extrusion.- 14.1 Introduction.- 14.1.1 Functions of Extruders.- 14.1.2 Types of Extruders.- 14.1.3 Screw Extruder Zones.- 14.2 Analysis of Single Screw Extruder Operation.- 14.2.1 Approximate Analysis of Melt Conveying Zone.- 14.2.2 Coupling Melt Conveying to Die Flow.- 14.2.3 Effects of Simplifying Approximations.- 14.2.3.1 Geometric Factors.- 14.2.3.2 Leakage Flow.- 14.2.3.3 Non-Newtonian Viscosity.- 14.2.3.4 Non-Isothermal Flow.- 14.2.4 Solids Conveying and Melting Zones.- 14.2.4.1 Feeding and Solids Conveying.- 14.2.4.2 Melting Zone.- 14.2.5 Scale-Up and Simulation.- 14.2.5.1 Scale-Up.- 14.2.5.2 Simulation.- 14.3 Mixing, Devolatilization and Twin Screw Extruders.- 14.3.1 Mixing.- 14.3.2 Devolatilization.- 14.3.3 Twin Screw Extruders.- References.- 15. Role of Rheology in Injection Molding.- 15.1 Introduction.- 15.2 Melt Flow in Runners and Gates.- 15.3 Flow in the Mold Cavity.- 15.4 Laboratory Evaluation of Molding Resins.- 15.4.1 Physical Property Measurement.- 15.4.2 Moldability Tests.- 15.5 Formulation and Selection of Molding Resins.- References.- 16. Role of Rheology in Blow Molding.- 16.1 Introduction.- 16.2 Flow in the Die.- 16.3 Parison Swell.- 16.4 Parison Sag.- 16.4.1 Pleating.- 16.5 Parison Inflation.- 16.6 Blow Molding of Engineering Resins.- 16.7 Stretch Blow Molding.- 16.8 Measurement of Resin Processability.- 16.8.1 Resin Selection Tests.- 16.8.2 Quality Control Tests.- References.- 17. Role of Rheology in Film Blowing and Sheet Extrusion.- 17.1 The Film Blowing Process.- 17.1.1 Description of the Process.- 17.1.2 Criteria for Successful Processing.- 17.1.3 Principal Problems Arising in Film Blowing.- 17.1.4 Resins Used for Blown Film.- 17.2 Flow in the Extruder and Die; Extrudate Swell.- 17.3 Melt Flow in the Bubble.- 17.3.1 Forces Acting on the Bubble.- 17.3.1.1 Viscous Stress in the Molten Region of the Bubble.- 17.3.1.2 Aerodynamic Forces.- 17.3.2 Bubble Shape.- 17.3.3 Drawability.- 17.4 Bubble Stability.- 17.5 Sheet Extrusion.- References.- 18. On-Line Measurement of Rheological Properties.- 18.1 Introduction.- 18.2 Types of On-Line Rheometers for Melts.- 18.2.1 On-Line Capillary Rheometers for Melts.- 18.2.2 Rotational On-Line Rheometers for Melts.- 18.2.3 In-Line Melt Rheometers.- 18.3 Specific Applications of Process Rheometers.- References.- 19. Industrial Use of Rheometers.- 19.1 Factors Affecting Test and Instrument Selection.- 19.1.1 Purposes of Rheological Testing.- 19.1.2 Material Limitations on Test Selection.- 19.1.3 Instruments.- 19.2 Screening and Characterization.- 19.2.1 Advantages and Disadvantages of Rheological Tests.- 19.2.2 Other Information Useful for Screening.- 19.2.3 Stability.- 19.2.3.1 Stability Measurement.- 19.2.3.2 Use of Stability Data.- 19.2.4 Temperature and Frequency Dependence.- 19.2.4.1 Measurement Tactics.- 19.2.4.2 Interpretation of Results.- 19.3 Resin Selection and Optimization and Process Problem Solving.- 19.4 Rheological Quality Control Tests.- References.- Appendix A: Measures of Strain for Large Deformations.- Appendix B: Molecular Weight Distribution and Determination of Molecular Weight Averages.- Appendix C: The Intrinsic Viscosity and The Inherent Viscosity.- Appendix D: The Glass Transition Temperature.- Appendix E: Manufacturers of Melt Rheometers and Related Equipment.- Nomenclature.- Author Index.

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Long Description

This book is designed to fulfill a dual role. On the one hand it provides a description of the rheological behavior of molten poly

Details ISBN0792358864 Author John M. Dealy Short Title MELT RHEOLOGY & ITS ROLE IN PL Language English ISBN-10 0792358864 ISBN-13 9780792358862 Media Book Year 1999 Publication Date 1999-07-31 Subtitle Theory and Applications Place of Publication Dordrecht DEWEY 668.41 Edition 1st Publisher Springer Format Paperback Pages 680 Imprint Springer Country of Publication Netherlands Illustrations 4 Illustrations, black and white; 680 p. 4 illus. DOI 10.1023/b131203;10.1007/978-94-009-2163-4 Edition Description Softcover reprint of the original 1st ed. 1999 Alternative 9780412739101 Audience Undergraduate Replaced by 9789400763944

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  • Condition: Neu
  • ISBN-13: 9780792358862
  • Book Title: Melt Rheology and Its Role in Plastics Processing
  • ISBN: 9780792358862
  • Subject Area: Mechanical Engineering, Chemical Engineering
  • Publication Name: Melt Rheology and Its Role in Plastics Processing: Theory and Applications
  • Publisher: Springer
  • Subject: Engineering & Technology, Chemistry, Mechanics
  • Publication Year: 1999
  • Type: Textbook
  • Format: Paperback
  • Language: English
  • Item Height: 235mm
  • Author: K.F. Wissbrun, John M Dealy
  • Item Width: 155mm
  • Item Weight: 2090g
  • Number of Pages: 680 Pages

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