Aspects Of Polyurethanes
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Aspects Of Polyurethanes
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Author : Faris Yılmaz
language : en
Publisher: BoD – Books on Demand
Release Date : 2017-09-27
Aspects Of Polyurethanes written by Faris Yılmaz and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-09-27 with Science categories.
Polyurethanes are formed by reacting a polyol (an alcohol with more than two reactive hydroxyl groups per molecule) with a diisocyanate or a polymeric isocyanate in the presence of suitable catalysts and additives. Because a variety of diisocyanates and a wide range of polyols can be used to produce polyurethane, a broad spectrum of materials can be produced to meet the needs of specific applications. During World War II, a widespread use of polyurethanes was first seen, when they were used as a replacement for rubber, which at that time was expensive and hard to obtain. During the war, other applications were developed, largely involving coatings of different kinds, from airplane finishes to resistant clothing. Subsequent decades saw many further developments and today we are surrounded by polyurethane applications in every aspect of our everyday lives. While polyurethane is a product that most people are not overly familiar with, as it is generally "hidden" behind covers or surfaces made of other materials, it would be hard to imagine life without polyurethanes.
Polyurethane Elastomers
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Author : Cristina Prisacariu
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-07-03
Polyurethane Elastomers written by Cristina Prisacariu and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-07-03 with Technology & Engineering categories.
A comprehensive account of the physical / mechanical behaviour of polyurethanes (PU ́s) elastomers, films and blends of variable crystallinity. Aspects covered include the elasticity and inelasticity of amorphous to crystalline PUs, in relation to their sensitivity to chemical and physical structure. A study is made of how aspects of the constitutive responses of PUs vary with composition: the polyaddition procedure, the hard segment, soft segment and chain extender (diols and diamines) are varied systematically in a large number of systems of model and novel crosslinked andthermoplastic PUs. Results will be related to: microstructural changes, on the basis of evidence from x-ray scattering (SAXS and WAXS), and also dynamic mechanical analyses (DMA), differential scanning calorimetry (DSC) and IR dichroism. Inelastic effects will be investigated also by including quantitative correlations between the magnitude of the Mullins effect and the fractional energy dissipation by hysteresis under cyclic straining, giving common relations approached by all the materials studied. A major structural feature explored is the relationship between the nature of the hard segment (crystallising or not) and that of the soft segments. Crystallinity has been sometimes observed in the commercial PUs hard phase but this is usually limited to only a few percent for most hard segment structures when solidified from the melt. One particular diisocyanate, 4,4’-dibenzyl diisocyanate (DBDI) that, in the presence of suitable chain extenders ( diols or diamines), gives rise to significant degrees of crystallinity [i-iii] and this is included in the present work. Understanding the reaction pathways involved, in resolving the subtle morphological evolution at the nanometre level, and capturing mathematically the complex, large-deformation nonlinear viscoelastic mechanical behaviour are assumed to bring new important insights in the world basic research in polyurethanes and towards applied industrial research in this area.
Polyurethanes
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Author : Mark F. Sonnenschein
language : en
Publisher: John Wiley & Sons
Release Date : 2020-12-29
Polyurethanes written by Mark F. Sonnenschein and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-12-29 with Technology & Engineering categories.
This book, cohesively written by an expert author with supreme breadth and depth of perspective on polyurethanes, provides a comprehensive overview of all aspects of the science and technology on one of the most commonly produced plastics. Covers the applications, manufacture, and markets for polyurethanes, and discusses analytical methods, reaction mechanisms, morphology, and synthetic routes Provides an up-to-date view of the current markets and trend analysis based on patent activity and updates chapters to include new research Includes two new chapters on PU recycling and PU hybrids, covering the opportunities and challenges in both
The Ici Polyurethanes Book
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Author : George Woods
language : en
Publisher:
Release Date : 1990-12-11
The Ici Polyurethanes Book written by George Woods and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990-12-11 with Science categories.
User-friendly, even for those with limited knowledge of chemistry, it contains clear details of processing, applications, and safety. New to this edition is an appendix covering the considerable progress that has taken place since 1987, including the development of alternatives for chlorofluorocarbons (CFCs) and the advent of polyurea elastomers.
60 Years Of Polyurethanes
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Author : University of Detroit Mercy. Polymer Institute
language : en
Publisher: CRC Press
Release Date : 1998-01-13
60 Years Of Polyurethanes written by University of Detroit Mercy. Polymer Institute and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-01-13 with Technology & Engineering categories.
Contains 25 reports of significant aspects of polyurethane technology and specific recent developments of importance. Historical, technical, economic, and marketing developments are covered. Technical advances treated include advances in polyols and polyurethane additives such as catalysts, surfacta
Castable Polyurethane Elastomers
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Author : I.R. Clemitson
language : en
Publisher: CRC Press
Release Date : 2015-05-13
Castable Polyurethane Elastomers written by I.R. Clemitson and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-05-13 with Science categories.
Castable Polyurethane Elastomers is a practical guide to the production of castable polyurethane articles, from simple doorstops to complex items used in the military and nuclear industries. The book shows the progression from raw materials to prepolymer production, including the chemistry and functionality of the production processes. It provides a comprehensive look at various problem-solving and processing techniques, examining the selection of different types of systems on both the micro and macro levels. It also discusses curing and post-curing operations, conveying the importance of using the correct property for the application. Reorganized for better flow, this Second Edition: Describes new methods in the processing of castable polyurethanes Expands coverage of health and safety aspects Brings all standards up to date Castable Polyurethane Elastomers, Second Edition explains the production of polyurethane components, filling the gap between pure chemistry and trade information.
Chemistry And Technology Of Polyols For Polyurethanes
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Author : Mihail Ionescu
language : en
Publisher: iSmithers Rapra Publishing
Release Date : 2005
Chemistry And Technology Of Polyols For Polyurethanes written by Mihail Ionescu and has been published by iSmithers Rapra Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Science categories.
This book considers the raw materials used to build the polyurethane polymeric architecture. It covers the chemistry and technology of oligo-polyol fabrication, the characteristics of the various oligo-polyol families and the effects of the oligo-polyol structure on the properties of the resulting polyurethane. It presents the details of oligo-polyol synthesis, and explains the chemical and physico-chemical subtleties of oligo-polyol fabrication. This book will be of interest to all specialists working with polyols for the manufacture of polyurethanes and to all researchers that would like to know more about polyol chemistry.
Polyurethane Handbook
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Author : Günter Oertel
language : en
Publisher: Hanser Gardner Publications
Release Date : 1994
Polyurethane Handbook written by Günter Oertel and has been published by Hanser Gardner Publications this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Technology & Engineering categories.
This up-to-date, authoritative handbook and reference work covers all aspects of polyurethane product research and development, processing technology and applications, economy, and ecology. This book is written for processors and users of polyurethanes. No other work gives a more comprehensive overview of the current state of the art.
Szycher S Handbook Of Polyurethanes First Edition
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Author : Michael Szycher, Ph.D
language : en
Publisher: CRC Press
Release Date : 1999-04-23
Szycher S Handbook Of Polyurethanes First Edition written by Michael Szycher, Ph.D and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-04-23 with Technology & Engineering categories.
Handbook of Polyurethanes serves as the first source of information of useful polymers. This new book thoroughly covers the entire spectrum of polyurethanes - from current technology to buyer's information. Discussions include: block and heteroblock systems rubber plasticity structure-property relations microphase separation catalysis of isocyanate reactions synthesis of polyurethanes for thermoplastics, thermosets, and curable compositions by either heat or U.V. energy biomedical applications of urethane elastomers castables, sealants, and caulking compounds flexible and semi-flexible foams health and safety This handbook compiles data from many sources, exhaustively illustrating the complex principles involved in polyurethane chemistry and technology. Handbook of Polyurethanes represents invaluable information for corporations, universities, or independent inventors.
Szycher S Handbook Of Polyurethanes Second Edition
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Author : Michael Szycher, Ph.D
language : en
Publisher: CRC Press
Release Date : 2012-07-13
Szycher S Handbook Of Polyurethanes Second Edition written by Michael Szycher, Ph.D and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-07-13 with Technology & Engineering categories.
A practical handbook rather than merely a chemistry reference, Szycher's Handbook of Polyurethanes, Second Edition offers an easy-to-follow compilation of crucial new information on polyurethane technology, which is irreplaceable in a wide range of applications. This new edition of a bestseller is an invaluable reference for technologists, marketers, suppliers, and academicians who require cutting-edge, commercially valuable data on the most advanced uses for polyurethane, one of the most important and complex specialty polymers. internationally recognized expert Dr. Michael Szycher updates his bestselling industry "bible" With seven entirely new chapters and five that are revised and updated, this book summarizes vital contents from U.S. patent literature—one of the most comprehensive sources of up-to-date technical information. These patents illustrate the most useful technology discovered by corporations, universities, and independent inventors. Because of the wealth of information they contain, this handbook features many full-text patents, which are carefully selected to best illustrate the complex principles involved in polyurethane chemistry and technology. Features of this landmark reference include: Hundreds of practical formulations Discussion of the polyurethane history, key terms, and commercial importance An in-depth survey of patent literature Useful stoichiometric calculations The latest "green" chemistry applications A complete assessment of medical-grade polyurethane technology Not biased toward any one supplier’s expertise, this special reference uses a simplified language and layout and provides extensive study questions after each chapter. It presents rich technical and historical descriptions of all major polyurethanes and updated sections on medical and biological applications. These features help readers better understand developmental, chemical, application, and commercial aspects of the subject.