Preventing Thermal Degradation Of Pvc Insulation By Mixtures Of Cross Linking Agents And Antioxidants

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Preventing Thermal Degradation of Pvc Insulation by Mixtures of Cross-Linking Agents and Antioxidants

Author : Taehwan Kim
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (13 download)

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Book Synopsis Preventing Thermal Degradation of Pvc Insulation by Mixtures of Cross-Linking Agents and Antioxidants by : Taehwan Kim

Download or read book Preventing Thermal Degradation of Pvc Insulation by Mixtures of Cross-Linking Agents and Antioxidants written by Taehwan Kim and published by . This book was released on 2018 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Poly(vinyl chloride)(PVC) wire and cable insulation has poor thermal stability, causing the plasticizer to separate from the PVC chain and produce an oily residue, lowering the tensile elongation at break and thus increasing brittleness. We have added 4 wt.% of three different types of cross-linking agents and antioxidants, as well as mixtures of both, to improve the thermal stability of the plasticizer and tensile properties of PVC after thermal exposure. We performed tensile tests, tribological tests, profilometry, scanning electron microscopy(SEM) and water absorption determination before and after thermal exposure at 136 °C for 1 week. After adding the agents, elongation at break increased by 10 to 20 % while the wear rate and water absorption were lower than for the control sample. Less voids are seen in the SEM images after adding these two kinds of agents. The thermal resistance of the PVC cable insulation is best enhanced by combinations of cross-linking agents and antioxidants.

Photostabilization of Polymers

Author : J.F. Rabek
Publisher : Springer Science & Business Media
ISBN 13 : 9400907478
Total Pages : 607 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis Photostabilization of Polymers by : J.F. Rabek

Download or read book Photostabilization of Polymers written by J.F. Rabek and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last two decades, the production of polymers and plastics has been increasing rapidly. In spite of developing new polymers and polymeric materials, only 40-60 are used commercially on a large scale. It has been estimated that half of the annual production of polymers is employed outdoors. Increasing the stability of polymers and plastics towards heat, light, atmospheric oxygen and other environmental agents and weathering conditions has always been a very important problem. The photochemical instability of most of polymers limits them to outdoor application, where they are photo degraded fast over periods ranging from months to a few years. To the despair of technologists and consumers alike, photodegrada tion and environmental ageing of polymers occur much faster than can be expected from knowledge collected in laboratories. In many cases, improved methods of preparation and purification of both monomers and polymers yield products of better quality and higher resistance to heat and light. However, without stabilization of polymers by applica tion of antioxidants (to decrease thermal oxidative degradation) and photostabilizers (to decrease photo-oxidative degradation) it would be impossible to employ polymers and plastics in everyday use.

INIS Atomindex

Author :
Publisher :
ISBN 13 :
Total Pages : 1514 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis INIS Atomindex by :

Download or read book INIS Atomindex written by and published by . This book was released on 1984 with total page 1514 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Radiation Effects on Polymers

Author : Roger Lee Clough
Publisher :
ISBN 13 :
Total Pages : 656 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Radiation Effects on Polymers by : Roger Lee Clough

Download or read book Radiation Effects on Polymers written by Roger Lee Clough and published by . This book was released on 1991 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here is the most extensive resource on polymer radiation effects to be available in more than a decade. This new volume reviews the fundamental chemistry and physics of polymer-radiation interaction and examines recent progress in most major areas of the field. Its 38 chapters, written by leading experts from around the world, cover: fundamentals of polymer radiation chemistry; technological applications of radiation to polymers (including radiation processing; radiation curing; sterilization; cross-linking, polymerization, grafting, X-ray resists, and others); and degradation of stabilization of irradiated polymers (including nuclear plants, scintillation detectors for particle physics, and others).

Extrusion

Author : Harold F. Giles Jr
Publisher : William Andrew
ISBN 13 : 1437734820
Total Pages : 638 pages
Book Rating : 4.4/5 (377 download)

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Book Synopsis Extrusion by : Harold F. Giles Jr

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

Photodegradation of Polymers

Author : Jan F. Rabek
Publisher : Springer Science & Business Media
ISBN 13 : 3642800904
Total Pages : 222 pages
Book Rating : 4.6/5 (428 download)

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Book Synopsis Photodegradation of Polymers by : Jan F. Rabek

Download or read book Photodegradation of Polymers written by Jan F. Rabek and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book on physical characteristics and practical aspects of polymer photodegradation Rabek emphasizes the experimental work on the subject. The most important feature of the book is the physical interpretation of polymer degradation, e.g. mechanism of UV/light absorption, formation of excited states, energy transfer mechanism, kinetics, dependence on physical properties of macromolecules and polymer matrices, formation of mechanical defects, practics during environmental ageing. He includes also some aspects of polymer photodegradation in environmental and space condition.

Introduction to Polymer Compounding

Author : Natamai Subramanian Muralisrinivasan
Publisher : Smithers Rapra
ISBN 13 : 1909030627
Total Pages : 139 pages
Book Rating : 4.9/5 (9 download)

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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.

Accelerated Aging

Author : Robert L. Feller
Publisher : Getty Publications
ISBN 13 : 0892361255
Total Pages : 292 pages
Book Rating : 4.8/5 (923 download)

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Book Synopsis Accelerated Aging by : Robert L. Feller

Download or read book Accelerated Aging written by Robert L. Feller and published by Getty Publications. This book was released on 1995-03-02 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accelerated Aging: Photochemical and Thermal Aspects represents the culmination of more than 40 years of research by noted scientist Robert L. Feller. The book focuses on the long-term performance of materials such as wool, dyes, and organic compounds; their resistance to change when exposed to environmental factors such as oxygen, ozone, moisture, heat, and light; and their physical durability with handling and use over time. Processes of deterioration are discussed based on speeded-up laboratory studies designed to clarify the chemical reactions involved and their physical consequences.

Inorganic-Whisker-Reinforced Polymer Composites

Author : Qiuju Sun
Publisher : CRC Press
ISBN 13 : 1498700683
Total Pages : 310 pages
Book Rating : 4.4/5 (987 download)

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Book Synopsis Inorganic-Whisker-Reinforced Polymer Composites by : Qiuju Sun

Download or read book Inorganic-Whisker-Reinforced Polymer Composites written by Qiuju Sun and published by CRC Press. This book was released on 2015-08-18 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inorganic-Whisker-Reinforced Polymer Composites: Synthesis, Properties and Applications gives a comprehensive presentation of inorganic microcrystalline fibers, or whiskers, a polymer composite filler. It covers whisker synthesis, surface modification, applications for reinforcing polymer-matrix composites, and analysis of resulting filled polymer

Plastics in Medical Devices

Author : Vinny R. Sastri
Publisher : Elsevier
ISBN 13 : 081552028X
Total Pages : 289 pages
Book Rating : 4.8/5 (155 download)

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Book Synopsis Plastics in Medical Devices by : Vinny R. Sastri

Download or read book Plastics in Medical Devices written by Vinny R. Sastri and published by Elsevier. This book was released on 2010-03-05 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: No book has been published that gives a detailed description of all the types of plastic materials used in medical devices, the unique requirements that the materials need to comply with and the ways standard plastics can be modified to meet such needs. This book will start with an introduction to medical devices, their classification and some of the regulations (both US and global) that affect their design, production and sale. A couple of chapters will focus on all the requirements that plastics need to meet for medical device applications. The subsequent chapters describe the various types of plastic materials, their properties profiles, the advantages and disadvantages for medical device applications, the techniques by which their properties can be enhanced, and real-world examples of their use. Comparative tables will allow readers to find the right classes of materials suitable for their applications or new product development needs.

Szycher's Handbook of Polyurethanes, Second Edition

Author : Michael Szycher, Ph.D
Publisher : CRC Press
ISBN 13 : 1439839581
Total Pages : 1147 pages
Book Rating : 4.4/5 (398 download)

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Book Synopsis Szycher's Handbook of Polyurethanes, Second Edition by : Michael Szycher, Ph.D

Download or read book Szycher's Handbook of Polyurethanes, Second Edition written by Michael Szycher, Ph.D and published by CRC Press. This book was released on 2012-07-13 with total page 1147 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Reverse Engineering of Rubber Products

Author : Saikat Das Gupta
Publisher : CRC Press
ISBN 13 : 0849373166
Total Pages : 360 pages
Book Rating : 4.8/5 (493 download)

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Book Synopsis Reverse Engineering of Rubber Products by : Saikat Das Gupta

Download or read book Reverse Engineering of Rubber Products written by Saikat Das Gupta and published by CRC Press. This book was released on 2013-09-19 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reverse engineering is widely practiced in the rubber industry. Companies routinely analyze competitors’ products to gather information about specifications or compositions. In a competitive market, introducing new products with better features and at a faster pace is critical for any manufacturer. Reverse Engineering of Rubber Products: Concepts, Tools, and Techniques explains the principles and science behind rubber formulation development by reverse engineering methods. The book describes the tools and analytical techniques used to discover which materials and processes were used to produce a particular vulcanized rubber compound from a combination of raw rubber, chemicals, and pigments. A Compendium of Chemical, Analytical, and Physical Test Methods Organized into five chapters, the book first reviews the construction of compounding ingredients and formulations, from elastomers, fillers, and protective agents to vulcanizing chemicals and processing aids. It then discusses chemical and analytical methods, including infrared spectroscopy, thermal analysis, chromatography, and microscopy. It also examines physical test methods for visco-elastic behavior, heat aging, hardness, and other features. A chapter presents important reverse engineering concepts. In addition, the book includes a wide variety of case studies of formula reconstruction, covering large products such as tires and belts as well as smaller products like seals and hoses. Get Practical Insights on Reverse Engineering from the Book’s Case Studies Combining scientific principles and practical advice, this book brings together helpful insights on reverse engineering in the rubber industry. It is an invaluable reference for scientists, engineers, and researchers who want to produce comparative benchmark information, discover formulations used throughout the industry, improve product performance, and shorten the product development cycle.

Journal of Applied Chemistry

Author :
Publisher :
ISBN 13 :
Total Pages : 590 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis Journal of Applied Chemistry by :

Download or read book Journal of Applied Chemistry written by and published by . This book was released on 1970 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Introduction to Polymer Science and Technology

Author :
Publisher : Bookboon
ISBN 13 : 8740300870
Total Pages : 269 pages
Book Rating : 4.7/5 (43 download)

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Book Synopsis Introduction to Polymer Science and Technology by :

Download or read book Introduction to Polymer Science and Technology written by and published by Bookboon. This book was released on with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Plastics Materials and Processes

Author : Charles A. Harper
Publisher : John Wiley & Sons
ISBN 13 : 0471459208
Total Pages : 1008 pages
Book Rating : 4.4/5 (714 download)

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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

Wood-Polymer Composites

Author : K O Niska
Publisher : Elsevier
ISBN 13 : 1845694570
Total Pages : 383 pages
Book Rating : 4.8/5 (456 download)

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Book Synopsis Wood-Polymer Composites by : K O Niska

Download or read book Wood-Polymer Composites written by K O Niska and published by Elsevier. This book was released on 2008-05-29 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wood-polymer composites (WPC) are materials in which wood is impregnated with monomers that are then polymerised in the wood to tailor the material for special applications. The resulting properties of these materials, from lightness and enhanced mechanical properties to greater sustainability, has meant a growing number of applications in such areas as building, construction and automotive engineering. This important book reviews the manufacture of wood-polymer composites, how their properties can be assessed and improved and their range of uses.After an introductory chapter, the book reviews key aspects of manufacture, including raw materials, manufacturing technologies and interactions between wood and synthetic polymers. Building on this foundation, the following group of chapters discusses mechanical and other properties such as durability, creep behaviour and processing performance. The book concludes by looking at orientated wood-polymer composites, wood-polymer composite foams, at ways of assessing performance and at the range of current and future applications.With its distinguished editors and international team of contributors, Wood-polymer composites is a valuable reference for all those using and studying these important materials. Provides a comprehensive survey of major new developments in wood-polymer composites Reviews the key aspects of manufacture, including raw materials and manufacturing technologies Discusses properties such as durability, creep behaviour and processing performance

PVC Handbook

Author : Charles E. Wilkes
Publisher : Hanser Gardner Publications
ISBN 13 : 9781569903797
Total Pages : 723 pages
Book Rating : 4.9/5 (37 download)

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Book Synopsis PVC Handbook by : Charles E. Wilkes

Download or read book PVC Handbook written by Charles E. Wilkes and published by Hanser Gardner Publications. This book was released on 2005 with total page 723 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this single handbook, the editors aim to give a diverse audience of readers a complete account of all aspects of PVC--from monomer manufacture to polymerization; the gamut of such additives as stabilizers, lubricants, plasticizers, impact modifiers, fillers and reinforcing agents; blends and alloys; compounding and processing; characterization; combustion resistance and weatherability; product engineering design; applications; environmental and safety; and finally the PVC industry dynamics. This handbook contains both practical formulation information as well as a mechanistic view of why PVC behaves as it does.