Kalman B. Migler

668.9

22

Hardcover

0824753860

9780824753863

Yes

Scholarly & Professional

1.1 in

9.3 in

26.5 Oz

6.2 in

TP156.P6

2005-295082

English

488 Pages

Polymer Processing Instabilities : Control and Understanding

2004

CRC Press LLC

Chemical Industries Ser.

Vol. 102

Materials Science / General, Textiles & Polymers, Physics / Polymer, Chemistry / Industrial & Technical

Technology & Engineering, Science

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., The topics covered in this book offer a fundamental and practical understanding of various flows that occur during the processing of polymer melts where instabilities pose a serious limitation in the rate of production, including extrusion and co-extrusion, blow molding, film blowing, film casting, and injection molding. The book 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 and summarizes the data collected, particularly over the last ten years. Polymer Processing Instabilities: Control and Understanding covers commodity polymers that are processed as melts at temperatures above their melting point or as concentrated solutions at lower temperatures.

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

Textbook

CRC Press LLC

9780824753863