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Developments in Plastics Technology —3

by A. Whelan J. L. Craft

Because of the sheer size of the plastics industry, the title Developments in Plastics Technology now covers an incredibly wide range of subjects or topics. No single volume can survey the whole field in any depth and so what follows is therefore a series of chapters on selected topics. The topics were selected by us, the editors, because of their immediate relevance to the plastics industry. When one considers the materials produced and used by the modern plastics industry, there is a tendency to think of the commodity thermoplastics (such as poly(vinyl chloride) or polyethylene); the thermosetting materials are largely ignored. Because of this attitude we are very pleased to include in this volume a chapter which deals with the processing of a thermosetting material, i.e. the pultrusion of glass reinforced polyester. The extrusion of plastics is, of course, a very important subject but an aspect which is often overlooked is the need to remove volatile matter during processing: for this reason we have included a chapter on devolatilisation. Current industrial practice is towards materials modification and this attitude is reflected in the chapters on the transformation of ethylene vinyl acetate polymers and the use of wollastonite in two important thermoplastics. When assessing the performance of materials, there is a tendency to concentrate on short-term mechanical tests and ignore such topics as fatigue and longer-term testing. We are therefore very pleased to include a chapter on this subject.

Developments in Plastics Technology—1: Extrusion (Developments Series)

by A. Whelan D. Dunning

In the field of plastics technology, the process of extrusion is widespread and important. It is employed in the compounding and pelletising of plastics materials, in their conversion into products (such as profiles, pipe, hose, sheet, film or bottles) and in the coating of wires, cables, paper, board or foil. A major reason for its use is the screw extruder's ability to melt efficiently and pump continuously large amounts of plastics materials. The understanding of the melting/pumping operation of the extruder and the development of larger and faster-running machines so as to give higher outputs have been given great attention and the results have been widely published. However, the whole manufacturing technology for extruded products has also developed, particularly in recent years. This has occurred not only by the use of modern screw extruders, but also by the incorporation of improved process control systems, the better design of dies and extrudate handling machinery and by the utilisation of improved plastics materials and additives. It is the purpose of this book to present selected topics which contribute to, or exemplify, these developments in extrusion-based processes.

Developments in Plastics Technology—4

by A. Whelan J. P. Goff

Because of the sheer size and scope of the plastics industry, the title Developments in Plastics Technology now covers an incredibly wide range of subjects or topics. No single volume can survey the whole field in any depth and what follows is, therefore, a series of chapters on selected topics. The topics were selected by us, the editors, because of their immediate relevance to the plastics industry. When one considers the advancements of the plastics processing machinery (in terms of its speed of operation and conciseness of control), it was felt that several chapters should be included which related to the types of control systems used and the correct usage of hydraulics. The importance of using cellular, rubber-modified and engineering-type plastics has had a major impact on the plastics industry and therefore a chapter on each of these subjects has been included. The two remaining chapters are on the characterisation and behaviour of polymer structures, both subjects again being of current academic or industrial interest. Each of the contributions was written by a specialist in that field and to them all, we, the editors, extend our heartfelt thanks, as writing a contribution for a book such as this, while doing a full-time job, is no easy task.

Developments in Polymer Characterisation—3: (pdf)

by J. V. Dawkins

Developments in Polymer Characterisation—4

by J. V. Dawkins

This volume includes reviews on tackling polymer characterisation problems and on developing specific characterisation techniques. The first two chapters and the last chapter describe progress in providing character­ isation information for polymers containing long-chain branching, for polymer blends, and for polymers having preferred orientation. The remaining chapters review progress in individual techniques, showing with examples the characterisation results which may be obtained. It is recognised that the degree of chain branching which can evolve in some polymerisation processes can have a marked effect on the flow properties of a polymer, and therefore on polymer processing behaviour. In the first chapter the characterisation of long-chain branching from measurements of the molecular size and molar mass of a polymer in dilute solution is outlined. It is indicated that a complete characterisation of branching requires the combined use of several techniques, emphasising in particular recent developments involving gel permeation chromatography. Thermal analysis and infrared spectroscopy are widely used techniques in polymer characterisation. Both techniques can provide, very quickly, significant results with readily available instrumentation. This is illustrated by the review of the characterisation of polymer blends by thermal analysis in Chapter 2. An assessment of blend morphology, which influences the behaviour of a material consisting of two or more polymers, is presented in terms of transition temperatures. Conventional infrared spectroscopy involves dispersive spectrometers which do not always provide accurate information on composition and structure for complex polymeric materials.

Developments in Polymer Stabilisation—8

by G. Scott

The purpose of the present series of publications is two-fold. In the first place it is intended to review progress in the development of practical stabilising systems for a wide range of polymers and applications. A complementary and ultimately more important objec­ tive is to accommodate these practical developments within the framework of antioxidant theory, since there can be little question that further major advances in the practice of stabilisation technology will only be possible on the basis of a firm mechanistic foundation. Research into the role of 'stable' free radicals as antioxidants and stabilisers for polymers has intensified in recent years. Nitroxyl radicals (nitroxides) were the earliest long-lived radicals to be investi­ gated in detail and Maslov and Zaikov review the developments that have taken place in understanding their reaction mechanisms from the time when they were first investigated in liquid hydrocarbon systems to the present day when their outstanding performance as light stabilisers has been the object of much scientific research. Although some features of their reactivity remain obscure, the authors approach the problem kinetically and indicate the factors limiting their effectiveness.

Developments in Reinforced Plastics—4

by G. Pritchard

One of the most interesting developments in composite materials technology during the past decade has been the attempt to displace thermosetting resins from their position as the natural matrix in 'advanced' composites for sUl;h fields as aerospace. Dr McMahon gives some indication of the nature of this challenge in his chapter on fibre-reinforced thermoplastics. He acknowledges the problem of their low fibre contents, with the associated possibility of inadequate mechanical properties, especially in compression; and draws attention to the way in which the lack of suitable teSI methods for composites in compression has caused difficulties in assessing the latest thermoplastics composites in this respect. It is therefore of special interest that Professor Piggott deals with the whole question of compression tesllflg of composites in Chapter 4. On the positive side, reinforced thermoplastics seem to be much more damage-tolerant than thermosets. This is clearly an advantage that will not be lost on the aircraft industry. The subject of damage repair to FRP is one of substantial concern; the wider question of defect detection and assessment is discussed authoritatively by Reifsnider and Henneke in Chapter 3, which focuses on the technique of thermography.

Developments in Reinforced Plastics—5: Processing and Fabrication

by G. Pritchard

Any series with a title beginning Developments in. . . is obviously intended to report innovatory and novel ideas. The trouble with innovatory thinking is that it often seems too esoteric for practical people to bother with. Certainly, this book is not meant primarily to be a quick-reference manual for fabricators. Its purpose is rather to signal the kind of developments which almost certainly will impinge on the world of reinforced plastics in, say, four or five years' time. In this particular volume most of the authors have directly or indirectly addressed the practical problems of processing and fabrica­ tion with reinforced plastics. There has been no attempt to review the current state-of-the-art of producing fabricated articles in reinforced plastics by such techniques as filament winding or pultrusion because these subjects have already been well covered elsewhere. Nor have I even tried to provide a comprehensive survey of all that could be called new in this field. Instead, I have simply taken a number of important and somewhat underestimated topics, generally material­ orientated rather than machine-centred, and asked leading figures to summarise the scene. At the risk of appearing arbitrary let us consider the first chapter by Cattanach and Cogswell. They tell us how a new material has been produced which not only adds to the range of composites available, it makes possible new fabrication processes (at least, new to FRP). Consequently it should result ultimately in many new markets and products. The opportunities are lucidly and imagina­ tively set out.

Developments in Rubber Technology—2: Synthetic Rubbers (Polymer Science and Technology Series #37)

by A. Whelan K. S. Lee

This book is intended for those people who have a knowledge or understanding of rubber materials and processes but who wish to update their knowledge. It should be read in conjunction with Developments in Rubber Technology-l as that volume discussed developments in natural rubber and selected special purpose synthetic rubbers as well as additives. The authors have been selected for their expertise in each particular field and we, as editors, would like to express our appreciation to the individual authors and also to their companies. Such a book would be impossible to produce without such active cooperation as we have received. Volumes 1 and 2 of Developments in Rubber Technology cover rubbers which are processed and vulcanised in the traditional manner. It is appreciated that the omission of non-vulcanised rubber materials (the so­ called thermoplastic elastomers) will be unwelcome to many readers but it is intended, because of the size of the subject, to cover these materials in a subsequent volume. A.W. K.S.L.

Developments in Rubber Technology—4

by K. S. Lee A. Whelan

This volume, the fourth in a series which began in 1979, covers a greater variety of subjects than any previous single volume. The basis of selection has been topical interest; hence the tailor-making of polymers to develop specific properties, methods of improving com­ pound processability and the use of rubbers in the oil industry are featured alongside a discussion of safety aspects. We have again sought the cooperation of the foremost authorities on the chosen subjects and have been delighted at the response which has yielded a list of authors of international repute. A. w. K. S. L. CONTENTS Preface v List of Contributors ix 1. Recent Developments in Synthetic Rubbers by Anionic Polymerization 1 I. G. HARGIS, R. A. LIVIGNI and S. L. AGGARWAL 2. Advances in Nitrile Rubber (NBR) 57 P. W. MILNER 3. Epoxidized Natural Rubber. 87 C. S. L. BAKER and I. R. GELLING 4. Process Aids and Plasticizers . 119 B. G. CROWTHER 5. A Review of Elastomers Used for Oilfield Sealing Environments . 159 W. N. K. REVOLTA and G. C. SWEET 6. Using Modern Mill Room Equipment . 193 H. ELLWOOD 7. Quality Requirements and Rubber Mixing . 221 P. S. JOHNSON 8. Health and Safety . . 253 B. G. WILLOUGHBY Index . 307 vii LIST OF CONTRIBUTORS s. L. AGGARWAL Gen Corp , Research Division, 2990 Gilchrist Road, Akron, Ohio 44305, USA C. S. L. BAKER Malaysian Rubber Producers' Research Association, Tun Abdul Razak Laboratory, Brickendonbury, Hertford SG13 8NL, UK B. G.

Developments in Soil Salinity Assessment and Reclamation: Innovative Thinking and Use of Marginal Soil and Water Resources in Irrigated Agriculture

by Shabbir A. Shahid, Mahmoud A. Abdelfattah and Faisal K. Taha

The papers assembled here cover topics such as technological advances in soil salinity mapping and monitoring, management and reclamation of salt-affected soils, use of marginal quality water for crop production, salt-tolerance mechanisms in plants, biosaline agriculture and agroforestry, microbiological interventions for marginal soils, opportunities and challenges in using marginal waters, and soil and water management in irrigated agriculture.

Developments in Solid Oxide Fuel Cells and Lithium Ion Batteries: Proceedings of the 106th Annual Meeting of The American Ceramic Society, Indianapolis, Indiana, USA 2004 (Ceramic Transactions Series #161)

by Arumugam Manthiram Prashant N. Kumta S. K. Sundaram Siu-Wai Chan

This proceedings focuses on both the scientific and technological aspects of fuel cells and high energy density batteries including solid oxide; proton exchange membrane; and direct methanol fuel cells; lithium-ion batteries; oxide-ion electrolytes; proton conductors; mixed ionic-electronic conductors; electrocatalysts; new materials development; and other related solid state and electrochemical aspects including supercapacitors and oxygen separation membranes.

Developments in Speech Synthesis

by Mark Tatham Katherine Morton

With a growing need for understanding the process involved in producing and perceiving spoken language, this timely publication answers these questions in an accessible reference. Containing material resulting from many years’ teaching and research, Speech Synthesis provides a complete account of the theory of speech. By bringing together the common goals and methods of speech synthesis into a single resource, the book will lead the way towards a comprehensive view of the process involved in human speech. The book includes applications in speech technology and speech synthesis. It is ideal for intermediate students of linguistics and phonetics who wish to proceed further, as well as researchers and engineers in telecommunications working in speech technology and speech synthesis who need a comprehensive overview of the field and who wish to gain an understanding of the objectives and achievements of the study of speech production and perception.

Developments in Strategic Ceramic Materials: A Collection of Papers Presented at the 39th International Conference on Advanced Ceramics and Composites, January 25-30, 2015, Daytona Beach, Florida (Ceramic Engineering and Science Proceedings #604)

by Soshu Kirihara

The Ceramic Engineering and Science Proceeding has been published by The American Ceramic Society since 1980. This series contains a collection of papers dealing with issues in both traditional ceramics (i.e., glass, whitewares, refractories, and porcelain enamel) and advanced ceramics. Topics covered in the area of advanced ceramic include bioceramics, nanomaterials, composites, solid oxide fuel cells, mechanical properties and structural design, advanced ceramic coatings, ceramic armor, porous ceramics, and more.

Developments in Strategic Ceramic Materials: A Collection of Papers Presented at the 39th International Conference on Advanced Ceramics and Composites, January 25-30, 2015, Daytona Beach, Florida (Ceramic Engineering and Science Proceedings #604)

by Soshu Kirihara

The Ceramic Engineering and Science Proceeding has been published by The American Ceramic Society since 1980. This series contains a collection of papers dealing with issues in both traditional ceramics (i.e., glass, whitewares, refractories, and porcelain enamel) and advanced ceramics. Topics covered in the area of advanced ceramic include bioceramics, nanomaterials, composites, solid oxide fuel cells, mechanical properties and structural design, advanced ceramic coatings, ceramic armor, porous ceramics, and more.

Developments in Strategic Ceramic Materials II: A Collection of Papers Presented at the 40th International Conference on Advanced Ceramics and Composites, January 24-29, 2016, Daytona Beach, Florida (Ceramic Engineering and Science Proceedings #611)

by Manabu Fukushima Andrew Gyekenyesi

This issue contains 27 papers from The American Ceramic Society’s 40th International Conference on Advanced Ceramics and Composites, held in Daytona Beach, Florida, January 24-29, 2016. This issue includes papers presented in the following Symposia and Focused Sessions: Symposium 2 – Advanced Ceramic Coatings for Structural, Environmental, and Functional Applications; Symposium 10 – Virtual Materials (Computational) Design and Ceramic Genome; Symposium 11 – Advanced Materials and Innovative Processing Ideas for the Industrial Root Technology; Symposium 12 – Materials for Extreme Environments: Ultrahigh Temperature Ceramics; and Emerging Technologies Symposium–Carbon Nanostructures; and Focused Session 1 - Geopolymers and Chemically Bonded Ceramics.

Developments in Strategic Ceramic Materials II: A Collection of Papers Presented at the 40th International Conference on Advanced Ceramics and Composites, January 24-29, 2016, Daytona Beach, Florida (Ceramic Engineering and Science Proceedings #611)

by Manabu Fukushima Andrew Gyekenyesi

This issue contains 27 papers from The American Ceramic Society’s 40th International Conference on Advanced Ceramics and Composites, held in Daytona Beach, Florida, January 24-29, 2016. This issue includes papers presented in the following Symposia and Focused Sessions: Symposium 2 – Advanced Ceramic Coatings for Structural, Environmental, and Functional Applications; Symposium 10 – Virtual Materials (Computational) Design and Ceramic Genome; Symposium 11 – Advanced Materials and Innovative Processing Ideas for the Industrial Root Technology; Symposium 12 – Materials for Extreme Environments: Ultrahigh Temperature Ceramics; and Emerging Technologies Symposium–Carbon Nanostructures; and Focused Session 1 - Geopolymers and Chemically Bonded Ceramics.

Developments in Strategic Materials (Ceramic Engineering and Science Proceedings #58)

by Tatsuki Ohji Andrew Wereszczak

This volume provides a one-stop resource, compiling current research on developments in strategic materials. It is a collection of papers from The American Ceramic Society s 32nd International Conference on Advanced Ceramics and Composites, January 27-February 1, 2008. Papers included in this issue come from five symposia: "Thermoelectric Materials for Power Conversion;" "Basic Science of Multifunctional Ceramics;" "Science of Ceramic Interfaces;" "Geopolymers;" and "Materials for Solid State Lighting." This is a valuable, up-to-date resource for researchers working in the field.

Developments in Strategic Materials and Computational Design II (Ceramic Engineering and Science Proceedings #552)

by Sujanto Widjaja Dileep Singh

This book is a collection of papers from The American Ceramic Society's 35th International Conference on Advanced Ceramics and Composites, held in Daytona Beach, Florida, January 23-28, 2011. This issue includes papers presented in the Thermal Management Materials and Technologies; Advanced Sensor Technology; Geopolymers; and Computational Design, Modeling, and Simulation of Ceramics and Composites symposia.

Developments in Strategic Materials and Computational Design III: Ceramic Engineering And Science Proceedings (Ceramic Engineering and Science Proceedings #578)

by ACerS Waltraud M. Kriven Andrew L. Gyekenyesi Gunnar Westin Jingyang Wang

Exploring the latest findings, new materials, and applications, this issue keeps readers current with some of the most important developments in strategic materials and the computational design of ceramics and composites. It features select contributions from one symposium and three focused sessions that took place in January 2012 during the 36th International Conference and Exposition on Advanced Ceramics and Composites (ICACC). This issue represents one of nine CESP issues published from the 36th ICACC meeting.

Developments in Strategic Materials and Computational Design IV: Ceramic Engineering And Science Proceedings, Volume 34 Issue 10 (Ceramic Engineering and Science Proceedings #588)

by Soshu Kirihara Sujanto Widjaja

Ceramic Engineering and Science Proceedings Volume 34, Issue 10 - Developments in Strategic Materials and Computational Design IV A collection of 25 papers from The American Ceramic Society’s 37th International Conference on Advanced Ceramics and Composites, held in Daytona Beach, Florida, January 27-February 1, 2013. This issue includes papers presented in the Geopolymers and Chemically Bonded Ceramics (Focused Session 1); Thermal Management Materials and Technologies (Focused Sessoin 2); and Materials for Extreme Environments: Ultrahigh Temperature Ceramics and Nano-laminated Ternary Carbides and Nitrides (MAX Phases) (Symposium 12).

Developments in Strategic Materials and Computational Design IV (Ceramic Engineering and Science Proceedings #588)

by Soshu Kirihara Sujanto Widjaja

Ceramic Engineering and Science Proceedings Volume 34, Issue 10 - Developments in Strategic Materials and Computational Design IV A collection of 25 papers from The American Ceramic Society’s 37th International Conference on Advanced Ceramics and Composites, held in Daytona Beach, Florida, January 27-February 1, 2013. This issue includes papers presented in the Geopolymers and Chemically Bonded Ceramics (Focused Session 1); Thermal Management Materials and Technologies (Focused Sessoin 2); and Materials for Extreme Environments: Ultrahigh Temperature Ceramics and Nano-laminated Ternary Carbides and Nitrides (MAX Phases) (Symposium 12).

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