Polymers, main components of plastics and rubbers, are being discarded in increasing quantities. But this waste can also be considered as `plastic gold'. Public concern, coupled with the inherent value of the material, means that recycling is imperative. The present book presents a survey of current knowledge in the form of case studies, including current legal and educational issues. Topics covered also include regulation and practice in NATO countries, the economics of recycling, the reprocessing of single polymers and mixtures, and future prospects and strategies. Audience: Vital reading for all polymer scientists, technicians and engineers.
This book discusses some of the state-of-the-art techniques of recycling post-consumer plastic materials and focuses on mechanical recycling, chemical recycling and energy recovery. The book is intended for all those who are interested in recycling of post consumer plastic waste. Although, this book discusses technical aspects of recycling, the authors have endeavoured to make this book easily understandable to anyone interested in the subject enabling the reader to gain a thorough grounding in all the subjects discussed.
Provides an overview of state-of-the-art recycling techniques together with current and potential applications. Presents material that is normally only available in the form of conference proceedings Includes flow charts detailing the recycling process Helps identify the problems encountered in the recycling of polymers Presents pie graphs and photographs of commercial outlets A comprehensive volume which will prove to be invaluable for polymer manufacturers, recyclers and marketers as well as environmental authorities and materials engineers.
Polymers are used in everything from nylon stockings to commercial aircraft to artificial heart valves, and they have a key role in addressing international competitiveness and other national issues. Polymer Science and Engineering explores the universe of polymers, describing their properties and wide-ranging potential, and presents the state of the science, with a hard look at downward trends in research support. Leading experts offer findings, recommendations, and research directions. Lively vignettes provide snapshots of polymers in everyday applications. The volume includes an overview of the use of polymers in such fields as medicine and biotechnology, information and communication, housing and construction, energy and transportation, national defense, and environmental protection. The committee looks at the various classes of polymersâ€"plastics, fibers, composites, and other materials, as well as polymers used as membranes and coatingsâ€"and how their composition and specific methods of processing result in unparalleled usefulness. The reader can also learn the science behind the technology, including efforts to model polymer synthesis after nature's methods, and breakthroughs in characterizing polymer properties needed for twenty-first-century applications. This informative volume will be important to chemists, engineers, materials scientists, researchers, industrialists, and policymakers interested in the role of polymers, as well as to science and engineering educators and students.
Design and Manufacturing of Plastics Products: Integrating Conventional Methods and Innovative Technologies brings together detailed information on design, materials selection, properties, manufacturing, and the performance of plastic products, incorporating the utilization of the latest novel techniques and additive manufacturing technologies. The book integrates the design of molded products and conventional manufacturing and molding techniques with recent additive manufacturing techniques to produce performant products and cost-effective tools. Key areas of innovation are explained in detail, including hybrid molds, the integration of processing options with product properties and performance, and sustainability factors such as eco-design strategies, recycling, and lifecycle assessment. Other sections cover the development of plastics products, including design methodologies, design solutions specific to plastics, and design for re-use, as well as manufacturing and performance, with an emphasis on thermoplastic molding techniques, recent advances on plastics tooling, and the appraisal of the influence of processing options on product performance. This is a valuable resource to plastics engineers, design engineers, mold makers, and product or part designers across industries. It will also be of interest to researchers and advanced students in plastics engineering, polymer science, additive manufacturing and mechanical engineering. Offers a thorough grounding in plastics part design, thermoplastic material selection, properties, manufacture and performance of plastic parts Presents the latest advances, including the integration of additive manufacturing in the plastics product development cycle, hybrid molds, and lifecycle and recycling considerations Enables the reader to utilize traditional methods alongside cutting-edge technologies in the production of performant plastic products and parts
This report begins by summarising the basis of polymer blending. This includes an outline of the techniques being used to characterise blends including spectroscopic techniques and rheometry. The types of polymer blends which have been studied are outlined. Methods of compatibilisation are discussed. The morphology of the phases in a blend is critical to property development - the types of morphology observed are described. Flow-induced morphology is described. Processing of blends and the effects on morphology are discussed including extrusion, thermoforming, blow moulding, injection moulding and foaming. The accompanying abstracts from the Rapra Polymer Library database provide useful further information and indicate sources of additional material.
“Plastics Additives and Testing” is a practical book for engineers and operators and discusses both inorganic and organic chemicals that are widely used as additives in plastics processing operations. It is common practice today to use analytical techniques to improve plastics processing. Because it is critically important to manufacture quality products, a reasonable balance must be drawn between control requirements and parameters for improved processing method with respect to plastics additives. This book serves to implement this balance in the manufacturing line. Written by a successful, international consultant with an excellent publishing track record, it combines plastics additives, testing and quality control and is a valuable and critical book for engineers and operators to have when performing their tasks.
This comprehensive book on troubleshooting PVC extrusion contains information on a wide range of topics with the emphasis on compounding, additives and also giving the knowledge about the combination of woody materials with PVC to wood polymer composites (WPC) is gaining more and more attraction in USA and Europe and a wide range of commercial products are already available on the market, but the troubleshooting areas are not covered well.
This third edition has been written to thoroughly update the coverage of injection molding in the World of Plastics. There have been changes, including extensive additions, to over 50% of the content of the second edition. Many examples are provided of processing different plastics and relating the results to critiCal factors, which range from product design to meeting performance requirements to reducing costs to zero-defect targets. Changes have not been made that concern what is basic to injection molding. However, more basic information has been added concerning present and future developments, resulting in the book being more useful for a long time to come. Detailed explanations and interpretation of individual subjects (more than 1500) are provided, using a total of 914 figures and 209 tables. Throughout the book there is extensive information on problems and solutions as well as extensive cross referencing on its many different subjects. This book represents the ENCYCLOPEDIA on IM, as is evident from its extensive and detailed text that follows from its lengthy Table of CONTENTS and INDEX with over 5200 entries. The worldwide industry encompasses many hundreds of useful plastic-related computer programs. This book lists these programs (ranging from operational training to product design to molding to marketing) and explains them briefly, but no program or series of programs can provide the details obtained and the extent of information contained in this single sourcebook.
