Download or read book Open cell Foaming with Injection Molding written by Raymond Kar Man Chu and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Injection molded Thermoplastic Foams for Sound Insulation written by Davoud Jahani and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Foaming and Blowing Agents written by George Wypych and published by Elsevier. This book was released on 2022-03-12 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Foaming and Blowing Agents, Second Edition includes the most current information on foaming technology, guiding users on the proper selection of formulation, which is highly dependent on the mechanisms of action of blowing agents and foaming agents, as well as dispersion and solubility. The book includes properties of 23 groups of blowing agents and the typical range of technical performance for each group, including general properties, physical-chemical properties, health and safety, environmental impact, and applications in different products and polymers. All information is illustrated by chemical reactions and diagrams. Chapters in the book look at foaming mechanisms with the use of solid blowing agents, which are decomposed to the gaseous products by application of heat, production of gaseous products by chemical reaction, and foaming by gases and evaporating liquids. Introduces the fundamental mechanisms of action of blowing agents and foaming Includes best practice guidance to help engineers and technicians improve the efficiency of their existing foaming processes Enables practitioners to select blowing agents and foaming methods more effectively, thus reducing the risk of poor specification Introduces useful analytical techniques for foaming Discusses the environmental impact of foaming processes
Download or read book Polymeric Foams written by Shau-Tarng Lee and published by CRC Press. This book was released on 2008-12-24 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores the Latest Developments in Polymeric FoamsSince the 1960s polymeric foams have grown into a solid industry that affects almost every aspect of modern life. The industry has weathered the energy crisis in the 70s, ozone issues in the 80s, and recycle/reuse in the 90s. However, the pace of development and social climate is rapidly changing a
Download or read book Foaming with Supercritical Fluids written by Ernesto Di Maio and published by Elsevier. This book was released on 2021-11-06 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foaming with Supercritical Fluids, Volume Nine provides a comprehensive description of the use of supercritical fluids as blowing agents in polymer foaming. To this aim, the fundamental issues on which the proper design and control of this process are rooted are discussed in detail, with specific attention devoted to the theoretical and experimental aspects of sorption thermodynamics of a blowing agent within a polymer, the effect of the absorbed blowing agent on the thermal, interfacial and rheological properties of the expanding matter, and the phase separation of the gaseous phase, and of the related bubble nucleation and growth phenomena. Several foaming technologies based on the use of supercritical blowing agents are then described, addressing the main issues in the light of the underlying chemical-physical phenomena. Offers strong fundamentals on polymer properties important on foaming Outlines the use of supercritical fluids for foaming Covers theoretical points-of-view, including foam formation of the polymer/gas solution to the setting of the final foam Discusses the several processing technologies and applications
Download or read book Some Critical Issues for Injection Molding written by Jian Wang and published by BoD – Books on Demand. This book was released on 2012-03-23 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is composed of different chapters which are related to the subject of injection molding and written by leading international academic experts in the field. It contains introduction on polymer PVT measurements and two main application areas of polymer PVT data in injection molding, optimization for injection molding process, Powder Injection Molding which comprises Ceramic Injection Molding and Metal Injection Molding, ans some special techniques or applications in injection molding. It provides some clear presentation of injection molding process and equipment to direct people in plastics manufacturing to solve problems and avoid costly errors. With useful, fundamental information for knowing and optimizing the injection molding operation, the readers could gain some working knowledge of the injection molding.
Download or read book Polymeric Foams written by Shau-Tarng Lee and published by CRC Press. This book was released on 2006-08-21 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymers are among the major hallmarks of 20th-century science, and the explosive outgrowth and tremendous importance of polymeric foams is a testament to their amazing versatility and unique properties. With applications from automotive to acoustic and medical, polymeric foams pervade all areas of our lives. If this growth is to continue into the
Download or read book Investigation of Foaming Behaviors in Injection Molding Using Mold Pressure Profile written by John Won S. Lee and published by . This book was released on 2009 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is intended to improve the understanding of foaming behaviors in various foam injection molding processes: structural foam molding, gas counter pressure molding, and gas counter pressure with mold opening. The foaming behavior in foam injection molding is different from foam extrusion in two ways. First, foaming occurs in a confined volume, which consists of a mold, whereas, it occurs in an open environment in foam extrusion. And second, while the foaming behavior in foam extrusion does not change with time once the steady state is reached, foam injection molding is on the other hand, time-dependent. These differences made it very challenging to study the foaming behaviors in foam injection molding. In this thesis, experiments were first conducted in foam extrusion to understand the effects of processing and material parameters on cell nucleation and growth behaviors. Subsequently, the knowledge obtained from the foam extrusion experiments was transferred to the foam injection molding process and the fundamental foaming mechanisms in foam injection molding were developed by conducting extensive experiments. Four processing parameters were mainly studied in this thesis: injection speed, void fraction setting (i.e., shot size), nitrogen content, and gate resistance. The experimental results revealed that the mold pressure profile during the foam injection molding process governed its foaming behaviors. Furthermore, by analyzing the mold pressure profile during the structural foam molding, it was possible to predict the achievable cell density in structural foam molding based on the foam extrusion results. When the gas counter pressure was employed, the analysis of the foaming behavior was relatively easier since the cell nucleation did not occur during the injection stage. However, the cell density that was achieved by using the gas counter pressure was generally lower than that obtained in structural foam molding due to the lower pressure drop rate caused by the use of the gas counter pressure. It was also discovered that the use of mold opening in combination with the gas counter pressure was very effective when uniform cell structure with a high void fraction was desired in addition to class-A surface quality.
Download or read book Polylactide Foams written by Mohammadreza Nofar and published by William Andrew. This book was released on 2017-09-18 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polylactide Foams: Fundamentals, Manufacturing, and Applications provides an introduction to the fundamental science behind plastic foams, polylactic acid) and polylactide foaming, giving designers tactics to replace traditional resins with sustainable and biodegradable materials. The book then delves deeper into the technology behind PLA foaming, such as PLA/gas mixture characteristics, solubility, interfacial tension behaviors and crystallization kinetics of various types of PLA and their compounds. The foaming behaviors and mechanisms of various types of PLA and PLA compounds are extensively analyzed and discussed through different manufacturing technologies, namely extrusion foaming, foam injection molding and bead foaming. Interest in Poly(lactic acid) and PLA foams is extremely high – particularly as a potential replacement for styrenic resins – and the price of PLA resin is lower than ever before. This biopolymer has significant potential to improve the sustainability of the plastics industry. Polylactide Foams have a range of potential applications, such as in construction, packaging, insulation, biomedical scaffolds, and others. However, processing and performance of PLA are not at the same level as other non-biodegradable resins. Introduces the concepts behind foaming, poly(lactic acid) and PLA foaming Supports further research and development in PLA foams by covering the state-of-the-art in different manufacturing and processing methods Provides practical guidance for materials scientists and engineers in industry looking to replace traditional polymer resins with a sustainable, biodegradable alternative
Download or read book Nanocellular Polymers written by Miguel Angel Rodríguez Pérez and published by Walter de Gruyter GmbH & Co KG. This book was released on 2023-11-06 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book covers production, structure, properties and potential applications of nanocellular polymers fabricated by using foaming methods. These materials are porous materials with pore sizes in the nanometer range, processed as bulk or film materials, from a wide set of polymers. Reduction of pore size to the nanoscale drastically modifies important properties such as thermal conductivity, optical properties, mechanical properties and specific surface area among others providing improved properties and promising applications for these materials in automotive, aeronautic, renewable energies, construction, filtration or thermal insulation.
Download or read book Multiphase Polylactide Blends written by Mohammadreza Nofar and published by Elsevier. This book was released on 2021-07-15 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multiphase Polylactide Blends: Toward a Sustainable and Green Environment guides the reader through fundamentals, science, preparation, and key areas of innovation in polylactide (PLA) blends. Bio-based polymers, and notably PLA, have not only gained increasing interest as a more sustainable alternative but also bring challenges in terms of mechanical, rheological, thermal and physical properties, processability, shapability, and foamability. The use of blends looks to address these, with the development of new types of economically viable and environmentally friendly systems. This is a valuable book for academic researchers, scientists, and graduate students across bio-based polymers, polymer science, chemistry, and materials science, as well as engineers, R&D professionals, and all those in industry with interest in PLA-based blends, biopolymers, and sustainable materials and products. More specifically, the first three chapters of this book overview the fundamentals of thermoplastic polymers, polymer blends, and structure and properties of PLA. These chapters could technically be used as a valuable textbook on the noted topics. The rest of the chapters inclusively study the fundamentals, investigations, and achievements in PLA-based blends with various types of polymers. These include miscible blends of poly L-lactide and poly D-lactide, binary immiscible/miscible blends of PLA with other thermoplastics and elastomers, PLA-based ternary blends and blend nanocomposites, as well as PLA-based blend foams. Overall, this book provides a thorough and critical overview of the state of the art in PLA-based blends, including significant past and recent advances, with the aim of supporting and shaping further research and industrial application of these materials for the development of a green and sustainable future. Overviews the fundamentals of thermoplastic polymers, polymer blends, and the structure and properties of PLA. Provides detailed coverage of the fundamentals and science of PLA blends, including phase miscibility, thermal and mechanical properties, interface and rheological properties, the use of compatibilizers, and phase morphological analysis. Offers a thorough critical overview of the state of the art in processing and development of PLA-based blends, addressing key challenges and future perspectives. Covers the latest advances, including PLA-based ternary blends, blend nanocomposites, and PLA-based blend microcellular foams.
Download or read book Recent Research inPolymerization written by Nevin Çankaya and published by BoD – Books on Demand. This book was released on 2018-01-17 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to help you concentrate on recent developments in polymerization. The chapters collected in the book are contributions by invited researchers with a long-standing experience in different research areas. I hope that the material presented here is understandable to a broad audience, not only chemists but also scientists from various disciplines. The book contains nine chapters in three sections: (1) "General Information about Polymerization," (2) "Biomaterial Content Polymer Composites," and (3) "Mechanical Properties of Polymerization." The book provides detailed and current reviews in these different areas written by experts in their respective fields. This book is expected to be useful for polymer workers and other scientists alike and contribute to the training of current and future researchers, academics, PhD degree students, as well as other scientists.
Download or read book Foamability of Thermoplastic Polymeric Materials written by Suprakas Sinha Ray and published by Elsevier. This book was released on 2021-09-24 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foamability of Thermoplastic Polymeric Materials presents a cutting-edge approach to thermoplastic polymeric foams, drawing on the latest research and guiding the reader through the fundamental science, foamability, structure-property-processing relationship, multi-phase polymeric materials, degradation characteristics of biodegradable foams and advanced applications. Sections provide detailed information on foam manufacturing technologies and the fundamental science behind foaming, present insights on the factors affecting foamability, cover ways of enhancing the foamability of various polymeric materials, with special focus on multi-phase systems, discuss the degradation of biodegradable foams and special morphology development for scaffolds, packaging, acoustic and super-insulation applications, as well as cell seeding studies in scaffolds. Each application has specific requirements in terms of desired properties. This in-depth coverage and analysis helps those looking to move forward with microcellular processing and polymer foaming. This is an ideal resource for researchers, advanced students and professionals interested in the microcellular processing of polymeric materials in the areas of polymer foaming, polymer processing, plastics engineering and materials science. Offers in-depth coverage of factors affecting foamability and methods for enhancing the foamability of polymeric materials Explores innovative applications in a range of areas, including scaffolds, acoustic applications, packaging and super-insulation Provides a comprehensive, critical overview of the state-of-the-art, possible future research directions, and opportunities for industrial application
Download or read book Polymer and Composite Rheology written by Rakesh K. Gupta and published by CRC Press. This book was released on 2000-06-14 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analysis of polymer and composite rheology. This second edition covers flow properties of thermoplastic and thermoset polymers, and general principles and applications of all phases of polymer rheology, with new chapters on the rheology of particulate and fibre composites. It also includes new and expanded detail on polymer blends and emulsions,
Download or read book Polymer Chemistry written by Sebastian Koltzenburg and published by Springer Nature. This book was released on 2023-07-12 with total page 641 pages. Available in PDF, EPUB and Kindle. Book excerpt: Awarded the Literature Prize of the VCI This comprehensive textbook describes the synthesis, characterization and technical and engineering applications of polymers. Polymers are unique molecules and have properties different from any other class of materials. We encounter them in everyday life, not only in the form of the well-known, large-volume plastics such as PE or PP or the many other special polymers, some of which are very specifically modified but also in nature as polymeric biomolecules, such as DNA. Our life, as we know it, would not only be completely different without macromolecules but it would also be biologically impossible. This textbook provides a broad knowledge of the basic concepts of macromolecular chemistry and the unique properties of this class of materials. Environmentally relevant topics, such as biopolymers and microplastic, which should not be missing in a contemporary textbook are also covered. Building on basic knowledge of organic chemistry and thermodynamics, the book presents an easy-to-understand yet in-depth picture of this very dynamic and increasingly important interdisciplinary science that involves elements of chemistry, physics, engineering, and the life sciences. Readers of this work can confirm their understanding of the text at the end of each chapter by working through a selection of exercises. In writing the book, great importance was attached to good readability despite the necessary depth of detail. It is a book that is just as suitable for students of chemistry and related courses as it is for the applied scientist in an industrial environment. The first edition of this work is so far the only textbook on polymer chemistry to be awarded the Literature Prize of the Fund of the German Chemical Industry Association in 2015.
Download or read book Plastics Technology Handbook written by Manas Chanda and published by CRC Press. This book was released on 2017-11-07 with total page 1660 pages. Available in PDF, EPUB and Kindle. Book excerpt: Updated throughout to reflect advances over the last decade, the Fifth Edition continues the handbook’s tradition of authoritative coverage of fundamentals, production methods, properties, and applications of plastics and polymer-based materials. It covers tooling for plastics fabrication processes, thermoplastics, thermosetting plastics, foamed plastics, reinforced plastics, plastisols, and new developments in mold design. It also discusses rubber compounding and processing technologies. More recent developments in polymer fabrication and processing, including electrospinning, electrografted coating, polymer-metal hybrid joining, flex printing, and rapid prototyping/ 3D printing, are also presented. The handbook highlights advanced materials including natural and synthetic gfnanosize polymers, their unusual properties, and innovative applications, as well as polymer-carbon nanocomposites, graphene-based polymer nanocomposites, smart healable polymer composites, smart polymer coatings, electroactive polymers, polymer nanomaterials, and novel nano-/microfibrillar polymer composites. It offers updates on polymer solar battery development, plastics recycling and disposal methods, new concepts of "upcycling" and single-polymer composites, renewable synthetic polymers, biodegradable plastics and composites, and toxicity of plastics. The book also provides an overview of new developments in polymer applications in various fields including packaging, building and construction, corrosion prevention and control, automotive, aerospace applications, electrical and electronic applications, agriculture and horticulture, domestic appliances and business machines, medical and biomedical applications, marine and offshore applications, and sports.
Download or read book Multifunctional Polymeric Foams written by Soney C. George and published by CRC Press. This book was released on 2023-03-24 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides description of functional foams, their manufacturing methods, properties, and applications Covers various blowing agents, greener methods for foaming, and emerging applicability Illustrates comparative information regarding polymeric foams and recent developments with polymer nanocomposite foams Includes applications in mechanical, civil, biomedical, food packaging, electronics, health care industry, and acoustics fields Reviews elastomeric foams and their nanocomposite derivatives
