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Author: Roger P. Brown
Publisher: iSmithers Rapra Publishing
ISBN: 9781859571859
Category : Technology & Engineering
Languages : en
Pages : 90
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Book Description
The properties of rubbers are subject to change as a result of ageing, ultimately to the point where the material is no longer capable of fulfilling its function. After a brief introduction to the main environmental and mechanical factors affecting performance, this review focuses on the thermo-oxidative ageing of rubber. It considers the methods of, and the published results from, both natural and accelerated tests. A major section of the report is devoted to exposure and test techniques with discussion of the methods of physical and chemical analysis. An additional indexed section containing several hundred abstracts from the Rapra Polymer Library database gives useful references for further reading.
Author: Roger P. Brown
Publisher: iSmithers Rapra Publishing
ISBN: 9781859571859
Category : Technology & Engineering
Languages : en
Pages : 90
Get Book Here
Book Description
The properties of rubbers are subject to change as a result of ageing, ultimately to the point where the material is no longer capable of fulfilling its function. After a brief introduction to the main environmental and mechanical factors affecting performance, this review focuses on the thermo-oxidative ageing of rubber. It considers the methods of, and the published results from, both natural and accelerated tests. A major section of the report is devoted to exposure and test techniques with discussion of the methods of physical and chemical analysis. An additional indexed section containing several hundred abstracts from the Rapra Polymer Library database gives useful references for further reading.
Author: Robert L. Feller
Publisher: Getty Publications
ISBN: 0892361255
Category : Art
Languages : en
Pages : 292
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Book Description
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.
Author: Michel Biron
Publisher: Elsevier
ISBN: 008048980X
Category : Technology & Engineering
Languages : en
Pages : 919
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Book Description
Thermoplastics represent appx 90% by weight of all plastics consumed world-wide. We know them mainly in the form of polythenes, polyolefins, polystyrenes, nylons and acrylics. Under different heating conditions and by varying the composition of the plastic it is possible to make many different products with differing properties.This is a decision-making tool and source-book of information for plastics users, providing detailed accounts of the materials used, their economics,the selection of appropriate materials, and the use of thermoplastic resins and their composites. By having this book to hand, you will use the right material in the right way to produce the right product.·Provides a quick and pragmatic approach to selecting thermoplastics for the non-specialist plastics user·Offers detailed accounts of thermoplastics including economic and technological elements·Clear and easy to understand illustrated with figures, tables and graphs throughout
Author: Roger Brown
Publisher: Springer Science & Business Media
ISBN: 0387290125
Category : Technology & Engineering
Languages : en
Pages : 389
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Book Description
Rubber is important in many engineering applications because of its unique properties. These properties must be measured with appropriate test methods developed specifically for this class of materials. This book provides, in one volume, comprehensive coverage of the procedures for measuring the whole range of the physical properties of rubber. This new edition presents an up-to-date introduction to the standard methods used for testing, quality control analysis, product evaluation, and production of design data for rubber and elastomers. Factors to be incorporated in the revision include the effects of newer instrumentation, the cutting back of laboratory staff, increased demands for formal accreditation and calibration, trend to product testing, overlap of thermoplastic elastomers with plastics and increased need for design data.
Author: Christopher White
Publisher: William Andrew
ISBN: 0323497772
Category : Technology & Engineering
Languages : en
Pages : 344
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Book Description
Service Life Prediction of Polymers and Plastics Exposed to Outdoor Weathering discusses plastics and polymers and their unique applications, from sealants used in construction, to polymer composites used in planes. While these materials are important enablers for advanced technologies, exposure to weather changes the very properties of plastics that make them so useful. This book reviews current research needs and provides a consensus roadmap of the scientific barriers to validated predictive models for the response of polymers and plastics to outdoor exposure. Despite extensive efforts over the past 20-30 years, testing of polymeric materials in accelerated or natural weathering conditions and the interpretation of the weathering results still require substantial improvements. This book represents the state-of-the-art in the prediction techniques available and in development. Engineers and materials scientists working in this field will be able to use the content of this book to assess the strengths and challenges of a range of different methods and approaches. - Enables engineers and scientists in a range of industries to more successfully predict the durability of polymers, paints and coatings when exposed to weather - Provides the latest information to help determine the sustainability of polymeric materials - Reviews the current state-of-the-art in this area and identifies research needs that are followed by more detailed discussions of specific polymers and applications
Author: J.A. Sidwell
Publisher: iSmithers Rapra Publishing
ISBN: 9781859572214
Category : Technology & Engineering
Languages : en
Pages : 140
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Book Description
This report provides an excellent, clearly written report on the state-of-the-art of food contact elastomers. In the UK, the Ministry of Agriculture Fisheries and Food (MAFF), industry and Rapra have combined forces to study the issues surrounding rubbers in contact with food. A survey has been carried out of the food processing industry to determine which rubber products come into contact with food, contact area, duration of contact and temperature of contact. The results of this survey are found in the report and a compilation of data tables on each food industry studied is included as an appendix. An additional indexed section containing several hundred abstracts from the Rapra Polymer Library database gives useful references for further reading.
Author: H. Keskkula
Publisher: iSmithers Rapra Publishing
ISBN: 9781859571934
Category : Technology & Engineering
Languages : en
Pages : 142
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Book Description
Glassy and ductile plastics require toughening to improve their range of usefulness, particularly for engineering applications. Rubber-modified, toughened thermoplastics are already in widespread use. This review sets out to introduce this field and describe the state-of-the-art. An additional indexed section containing several hundred abstracts from the Rapra Polymer Library database gives useful references for further reading.
Author: Michel Biron
Publisher: Elsevier
ISBN: 0080519202
Category : Technology & Engineering
Languages : en
Pages : 536
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Book Description
• A succinct source of information for designers and manufacturers.• A decision-making tool for those who need a quick and pragmatic account of thermosets and composites.• A synoptic account of the techno-economics and properties of all the commonly-used thermosets and composites.Designers and manufacturers using thermosets and composites, or those intending to do so, often need a succinct source of information on the economics and properties of these materials. This book provides a synoptic approach.It covers the economic importance of thermosets and composites, a comparison of the properties of the various thermoset categories, monographs on the nine principal families of thermosets, polymer composites and emergent materials and processes. Will enable readers to make informed decisions leading to well designed and made products.
Author: Roger P. Brown
Publisher: iSmithers Rapra Publishing
ISBN: 9781859572092
Category : Science
Languages : en
Pages : 178
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Book Description
A unique collection of long term ageing data, available for the first time, from Rapra Technology Limited. This report is an output from the Weathering of Elastomers and Sealants project which forms part of the UK government's Department of Trade and Industry's Degradation of Materials in Aggressive Environments Programme. Rapra Technology Limited has just completed a comprehensive natural ageing and physical testing programme on 19 rubber compounds, stored in controlled conditions, for a period of 40 years. This is believed to be the most extensive such study ever carried out. Now, for the first time, all the results of this unique programme have been published in this report. The properties of natural and synthetic rubbers suit them to a diverse range of applications, many of which demand a prolonged service life, and the retention of some or all of their mechanical properties for years or even decades. When the ageing programme was conceived in the 1950s, rubber product manufacturers were faced with a wider range of raw rubbers than had ever been available before. The relatively recent development of some of these materials also meant that there was little information available regarding their longevity. Thus the need was identified for a systematic programme of storage and testing. Rubber formulations were selected to represent those used in a wide range of applications, including general purpose and 'good ageing' grades. The results of all these tests are presented graphically in this report, allowing the rate of deterioration of properties and the influence of the environment to be clearly seen. Properties after 40 years are also tabulated, together with calculationsof percentage change. This information wi
Author: Martin J. Forrest
Publisher: iSmithers Rapra Publishing
ISBN: 9781859573907
Category : Science
Languages : en
Pages : 164
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Book Description
This report presents an overview of the chemical analysis of thermosets. Materials based on thermosets present the analyst with considerable challenges due to their complexity and the wide range of polymer types and additives available. This review sets out to present an introduction to the analytical techniques and methods that are used to characterise and carry out quality control work on thermosets, investigate the failure of thermosets products and to deformulate thermoset compounds. The review is accompanied by around 400 abstracts from papers and books in the Rapra Polymer Library database, to facilitate further reading on this subject.
