Deformation And Flow Of Polymeric Materials

Author : Helmut Münstedt,Friedrich Rudolf Schwarzl
Publisher : Springer
Page : 564 pages
File Size : 51,5 Mb
Release : 2014-11-18
Category : Technology & Engineering
ISBN : 9783642554094

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Deformation and Flow of Polymeric Materials by Helmut Münstedt,Friedrich Rudolf Schwarzl Pdf

This book describes the properties of single polymer molecules and polymeric materials and the methods how to characterize them. Molar masses, molar mass distributions and branching structure are discussed in detail. These properties are decisive for a deeper understanding of structure/properties relationships of polymeric materials. This book therefore describes and discusses them in detail. The mechanical behavior as a function of time and temperature is a key subject of the book. The authors present it on the basis of many original results they have obtained in their long research careers. They present the temperature dependence of mechanical properties of various polymeric materials in a wide temperature range: from cryogenic temperatures to the melt. Besides an extensive data collection on the transitions of various different polymeric materials, they also carefully present the physical explanations of the observed phenomena. Glass transition and melting temperatures are discussed, particularly, with their relevance for applications. A comprehensive part of the book deals with properties of polymers in the molten state and their decisive influence on the processing of the materials. The book presents and discusses viscous and elastic properties in detail as a function of molar mass, polydispersity, and branching. This book addresses students of polymer and materials science, as well as other natural sciences. Besides this educational value, it will also serve as a valuable monograph for everyone dealing with polymers and polymeric materials, from research, over development, to applications.

Author : Helmut Münstedt
Publisher : Carl Hanser Verlag GmbH Co KG
Page : 296 pages
File Size : 49,5 Mb
Release : 2019-07-08
Category : Technology & Engineering
ISBN : 9781569907559

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Elastic Behavior of Polymer Melts by Helmut Münstedt Pdf

Understanding the elastic properties of polymer melts is necessary for ensuring successful polymer processing and thus producing high-quality plastic parts. This unique book is the first to focus on this important topic. Starting with the molecular origin of elastic behavior and an explanation of the physical quantities involved, experimental methods and the dependence of elastic behavior on experimental parameters are then presented. Elastic properties of filled and unfilled systems are compared directly, and polymer blends are also considered. Elastic effects in various applications are included, such as in extrudate swell, internal stresses, and shrink films, to illustrate the importance of this field in the plastics processing industry.

Author : Wolfgang Grellmann,Beate Langer
Publisher : Springer
Page : 533 pages
File Size : 53,9 Mb
Release : 2017-07-12
Category : Technology & Engineering
ISBN : 9783319418797

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Deformation and Fracture Behaviour of Polymer Materials by Wolfgang Grellmann,Beate Langer Pdf

This book covers the most recent advances in the deformation and fracture behaviour of polymer material. It provides deeper insight into related morphology–property correlations of thermoplastics, elastomers and polymer resins. Each chapter of this book gives a comprehensive review of state-of-the-art methods of materials testing and diagnostics, tailored for plastic pipes, films and adhesive systems as well as elastomeric components and others. The investigation of deformation and fracture behaviour using the experimental methods of fracture mechanics has been the subject of intense research during the last decade. In a systematic manner, modern aspects of fracture mechanics in the industrial application of polymers for bridging basic research and industrial development are illustrated by multifarious examples of innovative materials usage. This book will be of value to scientists, engineers and in polymer materials science.

Author : Maxim Arzhakov
Publisher : CRC Press
Page : 183 pages
File Size : 51,5 Mb
Release : 2019-01-30
Category : Science
ISBN : 9780429534737

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Relaxation in Physical and Mechanical Behavior of Polymers by Maxim Arzhakov Pdf

Explores the nature of relaxation phenomena in polymers on the basis of time-temperature equivalence. Its role in the physical and mechanical behavior of polymers materials and fundamentals of thermoplastics processing are discussed. Four appendixes detail thermo-mechanical methods to study relaxation in polymers, structure of both amorphous and semi-crystalline polymers, and unified approach to describe deformation of polymeric materials.

Author : Helmut Münstedt
Publisher : Carl Hanser Verlag GmbH Co KG
Page : 474 pages
File Size : 44,6 Mb
Release : 2017-04-10
Category : Technology & Engineering
ISBN : 9781569906804

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Rheological and Morphological Properties of Dispersed Polymeric Materials by Helmut Münstedt Pdf

The rheology of polymer melts plays an important role today in industry and academia. Although several textbooks on this subject are available, with very few exceptions they cover homogeneous products only. This book is unique in that it focuses on heterogeneous systems such as particle-filled materials and polymer blends, which are highly important in the world market. It deals with similarities and differences of the flow properties of these two classes of material, providing both a fundamental and a practical understanding. Key points of the book are the viscous and elastic properties of engineering polymers filled with functional particles and the influence of nanoparticles on rheological properties. Two key aspects of rheological measurements are discussed: the influence of heterogeneous structures on the flow of materials important for processing and the use of rheological means to get an insight into morphological features. Both approaches are applied to particle-filled melts and to polymer blends. In the latter case it is shown in detail in which way the deformation of droplets formed by the dispersed phase can be affected by outer deformation, particularly in elongation.

Author : R.S. Lenk
Publisher : Springer Science & Business Media
Page : 380 pages
File Size : 50,8 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401096669

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Polymer Rheology by R.S. Lenk Pdf

Everything flows, so rheology is a universal science. Even if we set aside claims of such width, there can be no doubt of its importance in polymers. It joins with chemistry in the polymerisation step but polymer engineering is supreme in all the succeeding steps. This is the area concerned with the fabrication of the polymer into articles or components, with their design to meet the needs in service, and with the long and short term performance of the article or component. This is a typical area of professional engineering activity, but one as yet without its proper complement of professional engineers. An understanding of polymer rheology is the key to effective design and material plus process selection, to efficient fabrication, and to satisfactory service, yet few engineers make adequate use of what is known and understood in polymer rheology. Its importance in the flow processes of fabrication is obvious. Less obvious, but equally important, are the rheological phenomena which determine the in-service performance. There is a gap between the polymer rheologist and the polymer engineer which is damaging to both parties and which contributes to a less than satisfactory use of polymers in our society. It is important that this gap be filled and this book makes an attempt to do so. It presents an outline of what is known in a concise and logical fashion. It does this starting from first principles and with the minimum use of complex mathematics.

Author : Wolfgang Grellmann,Sabine Seidler
Publisher : Springer Science & Business Media
Page : 617 pages
File Size : 45,6 Mb
Release : 2013-03-09
Category : Technology & Engineering
ISBN : 9783662045565

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Deformation and Fracture Behaviour of Polymers by Wolfgang Grellmann,Sabine Seidler Pdf

This book gives an overview of recent advances in the fracture mechanics of polymers, morphology property correlations, hybrid methods for polymer testing and polymer diagnostics, and biocompatible materials and medical prostheses, as well as application examples and limits.

Author : British Society of Rheology
Publisher : Unknown
Page : 362 pages
File Size : 52,5 Mb
Release : 1968
Category : Polymerization
ISBN : UCAL:B4275715

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Polymer Systems by British Society of Rheology Pdf

Author : Frederick R. Eirich
Publisher : Academic Press
Page : 541 pages
File Size : 49,9 Mb
Release : 2014-05-12
Category : Technology & Engineering
ISBN : 9781483272979

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Rheology by Frederick R. Eirich Pdf

Rheology: Theory and Applications, Volume 4 focuses on the characteristics and reactions of materials of more fluid nature, including viscosity, dispersions, kinetics, and molecular structure. The selection first elaborates on viscosity and molecular structure and microrheology of dispersions. Discussions focus on applications to hemorheology and suspension viscosity, kinetics of flowing dispersions, inertial effects, stresses on particles in laminar shear, molecular motions in liquids, effect of molecular structure on viscosity of nonassociated liquids, and viscosity of mixtures and solutions. The manuscript then takes a look at high-shear viscometry and thixotropy and dilatancy, as well as polymer degradation under high-shear conditions, occurrence of thixotropy and dilatancy, structural turbulence, and analysis of flow behavior at high shear rates. The text examines the rheological aspects of the mixing of plastics compounds, rheology of liquid crystals, and nonlinear steady-flow behavior. Topics include normal stress functions, cholesteric mesophase, nematic mesophase and systems of rods, experimental evaluation of laminar-flow mixing theory, and mixers in the plastics industry. The selection is a dependable source material for researchers interested in the theories and applications of rheology.

Author : Tim A. Osswald,Natalie Rudolph
Publisher : Hanser Gardner Publications
Page : 225 pages
File Size : 48,9 Mb
Release : 2015
Category : Technology & Engineering
ISBN : 1569905177

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Polymer Rheology by Tim A. Osswald,Natalie Rudolph Pdf

Rheology unites the seemingly unrelated fields of plasticity and non-Newtonian fluids by recognizing that both these types of materials are unable to support a shear stress in static equilibrium. In this sense, a plastic solid is a fluid. Granular rheology refers to the continuum mechanical description of granular materials. In this book, rheology--the study of the deformation and flow of matter--is treated primarily in the context of the stresses generated during the flow of complex materials such as polymers, colloids, foams, and gels. A rapidly growing and industrially important field, it plays a significant role in polymer processing, food processing, coating and printing, and many other manufacturing processes.

Author : A. S. Argon
Publisher : Cambridge University Press
Page : 535 pages
File Size : 41,5 Mb
Release : 2013-03-07
Category : Science
ISBN : 9780521821841

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The Physics of Deformation and Fracture of Polymers by A. S. Argon Pdf

A physical, mechanism-based presentation of the plasticity and fracture of polymers, covering industrial scale applications through to nanoscale biofluidic devices.

Author : Roger T. Fenner
Publisher : Chemical Publishing Company
Page : 198 pages
File Size : 55,8 Mb
Release : 1980
Category : Technology & Engineering
ISBN : OSU:32435054285010

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Principles of Polymer Processing by Roger T. Fenner Pdf

Contents - Preface - Notation - 1. Introduction - 1.1 Polymeric Materials - 1.2 Polymer Processing - 1.3 Analysis of Polymer Processes - 1.4 Scope of the Book - 2. Introduction to the Main Polymer Processes - 2.1 Screw Extrusion - 2.2 Injection Moulding - 2.3 Blow Moulding - 2.4 Calendering - 2.5 Other Processes - 2.6 Effects of Processing - 3. Processing Properties of Polymers - 3.1 Melting and Thermal Properties of Polymers - 3.2 Viscous Properties of Polymer Melts - 3.3 Methods of Measuring Melt Viscosities - 3.4 Elastic Properties of Polymer Melts - 3.5 Temperature and Pressure Dependence of Melt Properties - 3.6 Processing Properties of Solid Polymers - 4. Fundamentals of Polymer Melt Flow - 4.1 Tensor Notation - 4.2 Continuum Mechanics Equations - 4.3 Constitutive Equations - 4.4 Boundary Conditions - 4.5 Dimensional Analysis of Melt Flows - 4.6 The Lubrication Approximation - 4.7 Mixing in Melt Flows - 5. Some Melt Flow Processes - 5.1 Some Simple Extrusion Dies - 5.2 Narrow Channel Flows in Dies and Crossheads - 5.3 Applications to Die Design - 5.4 Calendering - 5.5 Melt Flow in an Intensely Sheared Thin Film - 6. Screw Extrusion - 6.1 Melt Flow in Screw Extruders - 6.2 Solids Conveying in Extruders - 6.3 Melting in Extruders - 6.4 Power Consumption in Extruders - 6.5 Mixing in Extruders - 6.6 Surging in Extruders - 6.7 Over-all Performance and Design of Extruders - 7. Injection Moulding - 7.1 Reciprocating Screw Plastication - 7.2 Melt Flow in Injection Nozzles - 7.3 Flow and Heat Transfer in Moulds - Appendix A. Finite Element Analysis of Narrow Channel Flow - Appendix B. Solution of the Screw Channel Developing Melt Flow Equations - Appendix C. Solution of the Melting Model Equations - Further Reading - Index - Preface - The increasing use of synthetic polymers in preference to metals and other engineering materials for a wide range of applications has been accompanied by the development and improvement of processes for converting them into useful products. Indeed, it is often the comparative ease and cheapness with which polymeric materials can be processed that make them attractive choices. Because of the relatively complex behaviour of the materials, polymer processes may appear to be difficult to understand and analyze quantitatively. The purposes of this book are to introduce the reader briefly to the main methods of processing thermoplastic polymers, and to examine the principles of flow and heat transfer in some of the more industrially important of these processes. Much attention is devoted to the two most widely used methods - screw extrusion and injection moulding. Quantitative analyses based on mathematical models of the processes are developed in order to aid the understanding of them, and to improve both the performance and design of processing equipment. In addition to algebraic formulae, some worked examples are included to illustrate the use of the results obtained. In cases where analytical solutions are not possible, methods of numerical solution using digital computers are discussed in some detail, and typical results presented.

Author : Chang Dae Han
Publisher : Unknown
Page : 392 pages
File Size : 45,8 Mb
Release : 1976
Category : Technology & Engineering
ISBN : UOM:39015020768910

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Rheology in Polymer Processing by Chang Dae Han Pdf

Author : Chang Dae Han
Publisher : Oxford University Press
Page : 736 pages
File Size : 44,5 Mb
Release : 2007-05-16
Category : Technology & Engineering
ISBN : 0195345983

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Rheology and Processing of Polymeric Materials by Chang Dae Han Pdf

Volume 1 presents first fundamental principles of the rheology of polymeric fluid including kinematics and stresses of a deformable body, the continuum theory for the viscoelasticity of flexible homogeneous polymeric liquids, the molecular theory for the viscoelasticity of flexible homogeneous polymeric liquids, and the experimental methods for the measurement of the rheological properties of poylmeric liquids. The materials presented are intended to set a stage for the subsequent chapters by introducing the basic concepts and principles of rheology, from both phenomenological and molecular perspectives, ofstructurally simple flexible and homogeneous polymeric liquids. Next, this volume presents the rheological behavior of structurally complex polymeric materials including miscible polymer blends, block copolymers, liquid-crystalline polymers, thermoplastic polyurethanes, immiscible polymer blends, perticulare-filled polymers, organoclay nanocomposites, molten polymers with dissolved gas, and thermosts.

Author : J.A. Covas,J.F. Agassant,A.C. Diogo,J. Vlachopoulos,K. Walters
Publisher : Springer Science & Business Media
Page : 470 pages
File Size : 54,6 Mb
Release : 2013-04-17
Category : Technology & Engineering
ISBN : 9789401585712

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Rheological Fundamentals of Polymer Processing by J.A. Covas,J.F. Agassant,A.C. Diogo,J. Vlachopoulos,K. Walters Pdf

Experts in rheology and polymer processing present up-to-date, fundamental and applied information on the rheological properties of polymers, in particular those relevant to processing, contributing to the physical understanding and the mathematical modelling of polymer processing sequences. Basic concepts of non-Newtonian fluid mechanics, micro-rheological modelling and constitutive modelling are reviewed, and rheological measurements are described. Topics with practical relevance are debated, such as linear viscoelasticity, converging and diverging flows, and the rheology of multiphase systems. Approximation methods are discussed for the computer modelling of polymer melt flow. Subsequently, polymer processing technologies are studied from both simulation and engineering perspectives. Mixing, crystallization and reactive processing aspects are also included. Audience: An integrated and complete view of polymer processing and rheology, important to institutions and individuals engaged in the characterisation, testing, compounding, modification and processing of polymeric materials. Can also support academic polymer processing engineering programs.