Author: Eerik MaandiPublisher:
ISBN:
Category : Polymers
Languages : en
Pages : 72
Book Description
Effects of Rheology Modifiers on Polymer Systems, a Thesis
Author: Eerik MaandiPublisher:
ISBN:
Category : Polymers
Languages : en
Pages : 72
Book Description
Rheology of Filled Polymer Systems
Author: A.V. ShenoyPublisher: Springer Science & Business Media
ISBN: 9401592136
Category : Science
Languages : en
Pages : 484
Book Description
Polymerie materials have been replacing other conventional materials like metals, glass and wood in a number of applications. The use of various types of fillers incorporated into the polymer has become quite common as a means of reducing cost and to impart certain desirable mechanieal, thermal, electrieal and magnetic properties to the polymers. Oue to the energy crisis and high priees of petrochemieals, there has been a greater demand to use more and more fillers to cheapen the polymerie materials while maintaining and/or improving their properties. The advantages that filled polymer systems have to offer are normally offset to some extent by the increased complexity in the rheological behavior that is introduced by the inclusion of the fillers. Usually when the use of fillers is considered, a compromise has to be made between the improved mechanieal properties in the solid state, the increased difficulty in melt processing, the problem of achieving uniform dispersion of the filler in the polymer matrix and the economics of the process due to the added step of compounding. It has been recognized that addition of filler to the polymer brings a change in processing behavior. The presence of the filler increases the melt viscosity leading to increases in the pressure drop across the die but gives rise to less die swell due to decreased melt elasticity.
Polymer Rheology: Theory and Practice
Author: Y.G. YanovskyPublisher: Springer Science & Business Media
ISBN: 9401121168
Category : Science
Languages : en
Pages : 309
Book Description
The present book is devoted to a rapidly developing field of science which studies the behavior of viscoelastic materials under the influence of deformation~the rheology of polymers. Rheology has long been treated as the theoretical foundation of polymer processing, and from this standpoint it is difficult to overesti mate its importance in practice. Rheology plays an important role in developing our ideas on the nature of viscoelastic behavior in connection with the structural features of polymers and composites based on them. This expands the possibilities of employing rheological methods to characterize a variety of materials and greatly magnifies the interest in this field of research. The rheological properties of polymer systems are studied experimen tally, chiefly under conditions of shear and tensile strains. One explana tion is that many aspects of polymer material processing are associated with the stretching of melts or a combination of shear and tensile strains. In scientific investigations, either periodic or continuous conditions of shear deformation are employed. Each mode provides widespread infor mation. In periodic deformation, most attention is generally given to conditions with low deformation amplitudes that do not alter the structure of the polymer system during an experiment (the region of linear deformation conditions). Here the viscoelastic parameters are generally determined with respect to the frequency. Continuous deforma tion involves considerable strains, and may be attended by significant reversible and irreversible changes in the structure of a polymer.
The Effect of Chain Stiffness on the Rheology and Processability of Polymer Systems
Author: Chun-Hawn KaoPublisher:
ISBN:
Category : Polymers
Languages : en
Pages : 270
Book Description
Rheology Modifiers Handbook
Author: David D. BraunPublisher: Elsevier
ISBN: 0815518919
Category : Science
Languages : en
Pages : 518
Book Description
This is the first single-volume handbook with the information a researcher needs to select the best rheology modifiers for his/her project. Information on 20 different types of rheology modifiers manufactured by 26 companies worldwide is described. These range from Acrylic Polymers to Xanthan Gum. This handbook was written because, in the authors' experience, the selection of a rheology modifier for specific applications is an arduous task. It requires researching the technical literature of numerous suppliers, contacting them for current information and recommendations, and paring the list of candidates from hundreds to a few dozen. This book will enable readers to easily identify the best candidates for an application with a minimum investment of time.The book is divided into four sections. Part I reviews rheology fundamentals. Part II presents details on the products available from the 26 represented companies. Part III focuses on the selection of suitable rheology modifier candidates. Part IV is a formulary containing the contributions of the suppliers.
Irradiation Effects on the Rheological Behavior of Composite Polymer Systems
Author: Tao MiaoPolymer Systems
Author: British Society of RheologyPublisher:
ISBN:
Category : Polymerization
Languages : en
Pages : 362
Book Description
Polymers as Rheology Modifiers
Author: Dispersion and Effects of Additives in Polymer Systems
Author: T. IidaThe Rheology of Linear-gel Polymer Systems
Author: Stephen L. RosenPublisher:
ISBN:
Category : Polymerization
Languages : en
Pages : 386
Book Description