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Improved Pvdf Terpolymers For Solid State Cooling And Beyond
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Book Synopsis Improved PVDF Terpolymers for Solid State Cooling and Beyond by : Ziyang Zhang
Download or read book Improved PVDF Terpolymers for Solid State Cooling and Beyond written by Ziyang Zhang and published by . This book was released on 2019 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cooling is a basic need for human beings. Vapor compression cooling is the technology behind almost all of the applications. However, limited by its mechanism, the vapor compression refrigeration is not suitable for modern technologies such as mobile devices and personal cooling. Besides, it relies on refrigerants like Freon and hydrofluorinecarbons, which pose serious environmental problems. Therefore, it is urgent and over-due to develop new cooling technologies that are efficient and environmentally friendly. As a solid-state cooling technology, electrocaloric cooling offers several advantages over traditional cooling systems, but few devices offer high specific cooling power and a high coefficient of performance (COP). To develop electrocaloric cooling technology towards commercialization, we attacked the project through both material and device directions. We developed a solution process fabrication method for large area EC film fabrication. Various material characterizations were conducted to study and optimize the performance of the EC film. The as-fabricated EC film has an active area of 10 cm2 and a cycling test was conducted to prove its reliability under repeating high voltage. Another material's effort is to chemically modify the EC polymer for features like better mechanical strength, reliability, and high dielectric constant. Poly(vinylidene fluoride-trifluoroethylene-chlororfluoroethylene) was used as the starting material. It is a dehydrochlorination reaction catalyzed by triethylamine. The organic base attacks the hydrogen close to the Cl atoms, and the reaction introduces unsaturated double bond in the polymer chain. The unsaturated sites can be used as active sites for functional group introduction to modify the polymer further. In particular, we used this double-bonding containing polymer as the precursor to prepare crosslinked thin films and demonstrated improved capacitive energy storage. We presented a cooling device with high intrinsic thermodynamic efficiency using a flexible electrocaloric (EC) polymer film and an electrostatic actuation mechanism to transfer heat between a heat source and a heat sink. Reversible electrostatic forces reduce parasitic power consumption and allow efficient heat transfer through excellent thermal contact with the heat source or sink. The EC device produced a specific cooling power of 2.8 W/g and a relative COP of 13. Our cooling device is more efficient and compact than existing solid-state cooling technologies, showing a path towards using the technology for a variety of practical applications.
Download or read book Extrusion written by Harold F. Giles Jr and published by William Andrew. This book was released on 2013-09-21 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of Extrusion is designed to aid operators, engineers, and managers in extrusion processing in quickly answering practical day-to-day questions. The first part of the book provides the fundamental principles, for operators and engineers, of polymeric materials extrusion processing in single and twin screw extruders. The next section covers advanced topics including troubleshooting, auxiliary equipment, and coextrusion for operators, engineers, and managers. The final part provides applications case studies in key areas for engineers such as compounding, blown film, extrusion blow molding, coating, foam, and reprocessing. This practical guide to extrusion brings together both equipment and materials processing aspects. It covers basic and advanced topics, for reference and training, in thermoplastics processing in the extruder. Detailed reference data are provided on such important operating conditions as temperatures, start-up procedures, shear rates, pressure drops, and safety. A practical guide to the selection, design and optimization of extrusion processes and equipment Designed to improve production efficiency and product quality Focuses on practical fault analysis and troubleshooting techniques
Book Synopsis Ferroelectric Polymers by : Hari Singh Nalwa
Download or read book Ferroelectric Polymers written by Hari Singh Nalwa and published by CRC Press. This book was released on 1995-06-20 with total page 904 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work covers the chemistry and physics of polymeric materials and their uses in the fields of electronics, photonics, and biomedical engineering. It discusses the relationship between polymeric supermolecular structures and ferroelectric, piezoelectric and pyroelectric properties.
Book Synopsis Polymer Data Handbook by : James E. Mark
Download or read book Polymer Data Handbook written by James E. Mark and published by Oxford University Press, USA. This book was released on 2009 with total page 1250 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition includes better values of properties already reported, properties not reported in time for the earlier edition, and entirely new properties becoming important for modern polymer applications. It also contains 217 total polymers, 20 of which are all-new, particularly in high-technology areas such as eletrical conductivity, non-linear optical properties, microlithography, nanophotonics, and electroluminescences. Examples of specific polymers include silsesquoxane ladder polymers, 'foldamer' self-assembling polymers, and block copolymers that phase separate into 'mushrooms', ellipsoids, and sheets with on surface radically different in properties from the other.
Book Synopsis Polymer Blends Handbook by : L. A. Utracki
Download or read book Polymer Blends Handbook written by L. A. Utracki and published by . This book was released on 2014-01-31 with total page 1800 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by an international group of highly respected contributors, this fundamental reference work covers all aspects of polymer blends: science, engineering, technology and applications.
Book Synopsis Introduction to Polymer Compounding by : Natamai Subramanian Muralisrinivasan
Download or read book Introduction to Polymer Compounding written by Natamai Subramanian Muralisrinivasan and published by Smithers Rapra. This book was released on 2014-12-04 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer Compounding, Volume 1 focuses on aspects of the raw materials used in polymer processing. Polymer compounding comprises a complex heterogeneous system of polymers and other ingredients and, in many ways, the preparation of these materials is still very much an art. It is a powerful tool that will eventually be required as one of the basics of polymer processing. This book provides readers with a wide array of state-of-the-art strategies to develop their knowledge about compounding and the use of polymers while minimising wastage during processing. Details about polymer properties and additives are assembled to provide a one-source repository for compounding. Another important point to be considered in the book is the combination of polymers and additives and the essentials required for the development of economic and environmental incentives in polymer processing. This book will encourage further studies to understand the scientifically challenging polymer processing issues arising during the manufacture of parts for end-use applications. Finally, this volume presents an overview of polymer compounding requirements, as well as an idea of some of the future directions, advances andchallenges of polymer processing.
Book Synopsis Plastics Materials and Processes by : Charles A. Harper
Download or read book Plastics Materials and Processes written by Charles A. Harper and published by John Wiley & Sons. This book was released on 2003-10-10 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plastics Materials and Processes: A Concise Encyclopedia is a resource for anyone with an interest in plastic materials and processes, from seasoned professionals to laypeople. Arranged in alphabetical order, it clearly explains all of the materials and processes as well as their major application areas and usages. Plastics Materials and Processes: A Concise Encyclopedia: Discusses and describes applications and practical uses of the materials and processes. Clear definitions and sufficient depth to satisfy the information seekers needs
Book Synopsis Membrane Technology and Applications by : Richard W. Baker
Download or read book Membrane Technology and Applications written by Richard W. Baker and published by John Wiley & Sons. This book was released on 2004-05-31 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: Table of Contents Preface Acknowledgments for the first edition Acknowledgments for the second edition 1 Overview of Membrane Science and Technology 1 2 Membrane Transport Theory 15 3 Membranes and Modules 89 4 Concentration Polarization 161 5 Reverse Osmosis 191 6 Ultrafiltration 237 7 Microfiltration 275 8 Gas Separation 301 9 Pervaporation 355 10 Ion Exchange Membrane Processes - Electrodialysis 393 11 Carrier Facilitated Transport 425 12 Medical Applications of Membranes 465 13 Other Membrane Processes 491 Appendix 523 Index 535.
Book Synopsis Solid State Ionics for Batteries by : M. Tatsumisago
Download or read book Solid State Ionics for Batteries written by M. Tatsumisago and published by Springer Science & Business Media. This book was released on 2006-04-19 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, recent progress in batteries is firstly reviewed by researchers in three leading Japanese battery companies, SONY, Matsushita and Sanyo, and then the future problems in battery development are stated. Then, recent development of solid state ionics for batteries, including lithium ion battery, metal-hydride battery, and fuel cells, are reviewed. A battery comprises essentially three components: positive electrode, negative electrode, and electrolyte. Each component is discussed for the construction of all-solid-state Batteries. Theoretical understanding of properties of battery materials by using molecular orbital calculations is also introduced.
Download or read book Polymer Morphology written by Qipeng Guo and published by John Wiley & Sons. This book was released on 2016-05-16 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: With a focus on structure-property relationships, this book describes how polymer morphology affects properties and how scientists can modify them. The book covers structure development, theory, simulation, and processing; and discusses a broad range of techniques and methods. • Provides an up-to-date, comprehensive introduction to the principles and practices of polymer morphology • Illustrates major structure types, such as semicrystalline morphology, surface-induced polymer crystallization, phase separation, self-assembly, deformation, and surface topography • Covers a variety of polymers, such as homopolymers, block copolymers, polymer thin films, polymer blends, and polymer nanocomposites • Discusses a broad range of advanced and novel techniques and methods, like x-ray diffraction, thermal analysis, and electron microscopy and their applications in the morphology of polymer materials
Book Synopsis Organic Ferroelectric Materials and Applications by : Kamal Asadi
Download or read book Organic Ferroelectric Materials and Applications written by Kamal Asadi and published by Woodhead Publishing. This book was released on 2021-10-27 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic Ferroelectric Materials and Applications aims to bring an up-to date account of the field with discussion of recent findings. This book presents an interdisciplinary resource for scientists from both academia and industry on the science and applications of molecular organic piezo- and ferroelectric materials. The book addresses the fundamental science of ferroelectric polymers, molecular crystals, supramolecular networks, and other key and emerging organic materials systems. It touches on important processing and characterization methods and provides an overview of current and emerging applications of organic piezoelectrics and ferroelectrics for electronics, sensors, energy harvesting, and biomedical technologies. Organic Ferroelectric Materials and Applications will be of special interest to those in academia or industry working in materials science, engineering, chemistry, and physics. Provides an overview of key physical properties of the emerging piezoelectric and ferroelectric molecular and supramolecular systems Discusses best practices of processing, patterning, and characterization methods and techniques Addresses current and emerging applications for electronics, materials development, sensors, energy harvesting, and biomedical technologies
Book Synopsis Polymer Synthesis: Theory and Practice by : Dietrich Braun
Download or read book Polymer Synthesis: Theory and Practice written by Dietrich Braun and published by Springer Science & Business Media. This book was released on 2006-10-14 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first English edition of this book was pubUshed in 1971 with the late Prof. Dr. Werner Kern as coauthor. In 1997, for the preparation of the third edition, Prof. Dr. Helmut Ritter joined the team of authors and in 2001 Prof. Dr. Brigitte Voit and Prof. Dr. Matthias Rehahn complemented this team. The change in authors has not altered the basic concept of this 4th edition: again we were not aimed at compiling a comprehensive collection of recipes. In stead, we attempted to reach a broader description of the general methods and techniques for the synthesis, modification, and characterization of macromo- cules, supplemented by 105 selected and detailed experiments and by sufficient theoretical treatment so that no additional textbook be needed in order to under stand the experiments. In addition to the preparative aspects we have also tried to give the reader an impression of the relation of chemical structure and mor phology of polymers to their properties, as well as of areas of their application.
Book Synopsis Technology of Fluoropolymers by : Jiri George Drobny
Download or read book Technology of Fluoropolymers written by Jiri George Drobny and published by CRC Press. This book was released on 2008-09-19 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fully revised and updated, this second edition continues to provide industrial chemists, technologists, and engineers with the most accurate, compact, and practical source on fluoropolymers (such as Teflon). Highlighting new industrial, military, medical, and consumer goods applications, this edition adds more detailed information on equipment and
Download or read book Polymer Physics written by U.W. Gedde and published by Springer Science & Business Media. This book was released on 2013-12-11 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the result of my teaching efforts during the last ten years at the Royal Institute of Technology. The purpose is to present the subject of polymer physics for undergraduate and graduate students, to focus the fundamental aspects of the subject and to show the link between experiments and theory. The intention is not to present a compilation of the currently available literature on the subject. Very few reference citations have thus been made. Each chapter has essentially the same structure: starling with an introduction, continuing with the actual subject, summarizing the chapter in 30D-500 words, and finally presenting problems and a list of relevant references for the reader. The solutions to the problems presented in Chapters 1-12 are given in Chapter 13. The theme of the book is essentially polymer science, with the exclusion of that part dealing directly with chemical reactions. The fundamentals in polymer science, including some basic polymer chemistry, are presented as an introduction in the first chapter. The next eight chapters deal with different phenomena (processes) and states of polymers. The last three chapters were written with the intention of making the reader think practically about polymer physics. How can a certain type of problem be solved? What kinds of experiment should be conducted? This book would never have been written without the help of my friend and adviser, Dr Anthony Bristow, who has spent many hours reading through the manuscript. criticizing the content.
Author :Radislav A. Potyrailo Publisher :Springer Science & Business Media ISBN 13 :0387737138 Total Pages :495 pages Book Rating :4.3/5 (877 download)
Book Synopsis Combinatorial Methods for Chemical and Biological Sensors by : Radislav A. Potyrailo
Download or read book Combinatorial Methods for Chemical and Biological Sensors written by Radislav A. Potyrailo and published by Springer Science & Business Media. This book was released on 2009-03-21 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical sensors are in high demand for applications as varied as water pollution detection, medical diagnostics, and battlefield air analysis. Designing the next generation of sensors requires an interdisciplinary approach. The book provides a critical analysis of new opportunities in sensor materials research that have been opened up with the use of combinatorial and high-throughput technologies, with emphasis on experimental techniques. For a view of component selection with a more computational perspective, readers may refer to the complementary volume of Integrated Analytical Systems edited by M. Ryan et al., entitled “Computational Methods for Sensor Material Selection”.
Book Synopsis Water Activity in Foods by : Gustavo V. Barbosa-Cánovas
Download or read book Water Activity in Foods written by Gustavo V. Barbosa-Cánovas and published by John Wiley & Sons. This book was released on 2020-05-12 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition of Water Activity in Foods furnishes those working within food manufacturing, quality control, and safety with a newly revised guide to water activity and its role in the preservation and processing of food items. With clear, instructional prose and illustrations, the book’s international team of contributors break down the essential principles of water activity and water–food interactions, delineating water’s crucial impact upon attributes such as flavor, appearance, texture, and shelf life. The updated and expanded second edition continues to offer an authoritative overview of the subject, while also broadening its scope to include six newly written chapters covering the latest developments in water activity research. Exploring topics ranging from deliquescence to crispness, these insightful new inclusions complement existing content that has been refreshed and reconfigured to support the food industry of today.
Book Synopsis Polymer Characterisation by : B.J. Hunt
Download or read book Polymer Characterisation written by B.J. Hunt and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymers continue to play an ever increasing role in the modern world. In fact it is quite inconceivable to most people that we could ever have existed of the increased volume and variety of materials without them. As a result currently available, and the diversity of their application, characterisation has become an essential requirement of industrial and academic laboratories in volved with polymeric materials. On the one hand requirements may come from polymer specialists involved in the design and synthesis of new materials who require a detailed understanding of the relationship between the precise molecular architecture and the properties of the polymer in order to improve its capabilities and range of applications. On the other hand, many analysts who are not polymer specialists are faced with the problems of analysing and testing a wide range of polymeric materials for quality control or material specification purposes. We hope this book will be a useful reference for all scientists and techno or industrial laboratories, logists involved with polymers, whether in academic and irrespective of their scientific discipline. We have attempted to include in one volume all of the most important techniques. Obviously it is not possible to do this in any great depth but we have encouraged the use of specific examples to illustrate the range of possibilities. In addition numerous references are given to more detailed texts on specific subjects, to direct the reader where appropriate. The book is divided into II chapters.
