Blowing Agents for Polyurethane Foams PDF Download

Author: S. N. Singh
Publisher: iSmithers Rapra Publishing
ISBN: 1859573215
Category : Manufacturing processes
Languages : en
Pages : 168

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Book Description
This review discusses the legal requirements and property specifications for blowing agents in different applications. Each type of blowing agent is described. Key environmental and physical properties are listed, together with advantages and limitations. Foams are described by types and by applications. An additional indexed section containing several hundred abstracts from the Polymer Library gives useful references for further reading.

Author: N.C. Hilyard
Publisher: Springer Science & Business Media
ISBN: 9401112568
Category : Technology & Engineering
Languages : en
Pages : 381

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Book Description
Foams are gas filled integral structures in which the gas is finely dispersed throughout acontinuouslyconnected solid phase. The bulk density is usually substantially lower than that of the solid component, and for the foams which form the focus for this book the volume fraction of the gas phase is considerably greater than 0.5 and in most instances in excess of 0.9. Many ofthe materials encountered in every day experience, such as bread, plants and trees, structural materials for buildings, comfort materials for domestic and automotive seating, shock absorbers or car bumpers and materials for noise control, have one thing in common - the cellular nature of their physical structure. Whyare thesestructuressoimportantin the naturaland man-made world? The reasons are both technical and commercial. From a technical viewpoint cellular materials offer: 1. high specific stiffness and strength - making them suitable for structural applications; 2. closeto idealenergymanagement - hencetheir useinthermalandacoustic insulation, vibration damping, acoustic absorption and shock mitigation; and 3. comfort - hence their use for domestic and automotive seating.

Author: George Wypych
Publisher: Elsevier
ISBN: 1774670011
Category : Technology & Engineering
Languages : en
Pages : 309

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Book Description
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

Author: Kaneyoshi Ashida
Publisher: CRC Press
ISBN: 0203505999
Category : Technology & Engineering
Languages : en
Pages : 175

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Book Description
Polyurethane and Related Foams: Chemistry and Technology is an in-depth examination of the current preparation, processing, and applications of polyurethanes (PURs) and other polymer foams. Drawing attention to novel raw materials, alternative blowing agents, and new processing methods, the book accentuates recent innovations that meet incre

Author: C. Hepburn
Publisher: Springer Science & Business Media
ISBN: 940112924X
Category : Technology & Engineering
Languages : en
Pages : 458

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Book Description
The aim of this monograph has been to distil into a single volume, in an easily read and assimilated format, the essentials of this often complex technology such that it is usable by all technical and semi-technical people who wish to become their own polyurethane and polyurethane elastomer expert.

Author: Chris Defonseka
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110639831
Category : Technology & Engineering
Languages : en
Pages : 252

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Book Description
Flexible and viscoelastic polyurethane foams have enormous potential as viable business ventures and have replaced many traditional materials used in everyday life. This book describes the chemistry of flexible and viscoelastic polyurethane foams as well as calculations and formulating methodology for quality production. The author presents detailed information on foam manufacturing, based on over 45 years of hands-on industry experience.

Author: Daniel Klempner
Publisher:
ISBN: 9783446218314
Category : Schaumkunststoff
Languages : en
Pages : 584

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Book Description

Author: Michael Szycher, Ph.D
Publisher: CRC Press
ISBN: 1439839581
Category : Technology & Engineering
Languages : en
Pages : 1147

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Book Description
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.

Author: Jan W. Gooch
Publisher: Springer Science & Business Media
ISBN: 1441962468
Category : Science
Languages : en
Pages : 1048

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Book Description
This reference, in its second edition, contains more than 7,500 polymeric material terms, including the names of chemicals, processes, formulae, and analytical methods that are used frequently in the polymer and engineering fields. In view of the evolving partnership between physical and life sciences, this title includes an appendix of biochemical and microbiological terms (thus offering previously unpublished material, distinct from all competitors.) Each succinct entry offers a broadly accessible definition as well as cross-references to related terms. Where appropriate to enhance clarity further, the volume's definitions may also offer equations, chemical structures, and other figures. The new interactive software facilitates easy access to a large database of chemical structures (2D/3D-view), audio files for pronunciation, polymer science equations and many more.

Author: A A Stec
Publisher: Elsevier
ISBN: 184569807X
Category : Medical
Languages : en
Pages : 721

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Book Description
Toxic fire effluents are responsible for the majority of fire deaths, and an increasing large majority of fire injuries, driven by the widespread and increasing use of synthetic polymers. Fire safety has focused on preventing ignition and reducing flame spread through reducing the rate of heat release, while neglecting the important issue of fire toxicity. This is the first reference work on fire toxicity and the only scientific publication on the subject in the last 15 years.Assessment of toxic effects of fires is increasingly being recognised as a key factor in the assessment of fire hazards. This book raises important issues including the types of toxic effluents that different fires produce, their physiological effects, methods for generation and assessment of fire toxicity, current and proposed regulations and approaches to modelling the toxic impact of fires.The contributors to Fire toxicity represent an international team of the leading experts in each aspect of this challenging and important field. This book provides an important reference work for professionals in the fire community, including fire fighters, fire investigators, regulators, fire safety engineers, and formulators of fire-safe materials. It will also prove invaluable to researchers in academia and industry. - Investigates the controversial subject of toxic effluents as the cause of the majority of fire deaths and injuries - Describes the different types of toxic effluents and the specific fires that they produce, their physiological effects and methods for generation - Provides an overview of national and international fire safety regulations including current and proposed regulations such as a standardized framework for prediction of fire gas toxicity