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Polymer Processing Instabilities: Control and Understanding

Edited by Savvas Hatzikiriakos and Kalman Migler 
CRC Press  2004  



Hardback  488 pp  ISBN 9780824753863      £133.00
  • Summarizes studies of gross melt fracture instability and the main differences with other melt flow instabilities in terms of manifestation, origins, and production consequences
  • Studies the rheological flows of polymer melts, including elasticity, plasticity and viscosity
  • Presents state-of-the-art experiments and models concerning classic extrusion instabilities such as sharkskin, stick-slip, and gross melt fracture
  • Discusses the violation of the classical no-slip boundary conditions in the case of polymer melt flow
  • Addresses critical flow conditions and the physical mechanism that drives the secondary flow in injection molding flows
Polymer Processing Instabilities: Control and Understanding offers a practical understanding of the various flows that occur during the processing of polymer melts. The book pays particular attention to flow instabilities that affect the rate of production and the methods used to prevent and eliminate flow instabilities in order to increase production rates and enhance manufacturing efficiency.

Polymer Processing Instabilities: Control and Understanding summarizes experimental observations of flow instabilities that occur in numerous processing operations such as extrusion, injection molding, fiber spinning, film casting, and film blowing for a wide range of materials, including most commodity polymers that are processed as melts at temperatures above their melting point or as concentrated solutions at lower temperatures. The book first presents the fundamental principles in rheology and flow instabilities. It relates the operating conditions with flow curves, the critical wall shear stress for the onset of the instabilities, and new visualization techniques with numerical modeling and molecular structure. It reviews one-dimensional phenomenological relaxation/oscillation models describing the experimental pressure and flow rate oscillations, analyzes the gross melt fracture (GMF) instability, and examines how traditional and non-traditional processing aids eliminate melt fracture and improve polymer processability. It supplies a numerical approach for the investigation of the linear viscoelastic stability behavior of simplified injection molding flows and examines a newly discovered family of instabilities that occur in co-extrusion.

Polymer Processing Instabilities: Control and Understanding is unique in that it fills a gap in the polymer processing literature where polymer flow instabilities are not treated in-depth in any book. It summarizes state-of-the-art developments in the field, particularly those of the last ten years, and contains significant data based on this research.

Contents

INTRODUCTION
Overview of Processing Instabilities, S.G. Hatzikiriakos and K.B. Migler

VISCOELASTICITY AND BASIC FLOWS
Elements of Rheology, J.M. Dealy
Secondary Flow Instabilites, E. Mitsoulis
Wall Slip - Measurement and Modeling Issues, L.A. Archer

MELT FRACTURE AND RELATED PHENOMENA
Sharkskin Instability in Extrusion, K. Migler
Slip-Stick Instability, G. Georgiou
Gross Melt Fracture in Extrusion, J.M. Dealy and S. Kim
Conventional Polymer Processing Additives, S.B. Kharchenko, S.G. Hatzikiriakos, and K.B. Migler
Boron Nitride-based Polymer Processing Aids, S.G. Hatzikiriakos

APPLICATIONS
Draw Resonance in Film Casting, A. Co
Fiber Spinning and Film Blowing Instabilities, H.W. Jung and J.C. Hyun
Co-extrusion Instabilities, J. Dooley
Tiger Stripes: Instabilities in Injection Molding, A.C.B. Bogaerds, G.W.M. Peters, and F.P.T. Baaijens

To find similar publications, click on a keyword below:
CRC Press : chemistry : plastics & polymers : rheology

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