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Long-Term and Accelerated Ageing Tests on Rubbers

Long-Term and Accelerated Ageing Tests on Rubbers
Author: Roger P. Brown
Publisher: iSmithers Rapra Publishing
Total Pages: 90
Release: 2000
Genre: Technology & Engineering
ISBN: 9781859571859

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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.


Long-term and Accelerated Ageing Tests on Rubbers

Long-term and Accelerated Ageing Tests on Rubbers
Author: Roger P. Brown
Publisher:
Total Pages: 80
Release: 2000
Genre: Electron spectroscopy
ISBN:

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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. In many applications, the longevity of rubber components is of critical importance. During its lifetime a rubber may be subjected to a variety of exposure conditions leading to different types of degradation. After a brief introduction to the main environmental and mechanical factors affecting performance, the authors of this Rapra Review Report focus on the thermo-oxidative ageing of rubber. As the lifetime for some products is meas.


Ageing of Rubber

Ageing of Rubber
Author: Roger P. Brown
Publisher: iSmithers Rapra Publishing
Total Pages: 218
Release: 2001
Genre: Science
ISBN: 9781859572740

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Annotation This report details the results of accelerated heat ageing studies undertaken on re-mixed samples of those materials studied for the natural ageing study and on the 20 new compounds chosen to represent polymers not available in 1958 and to reflect changes in compounding practice. In addition to those properties studied for the artificial weathering exposures compression set and dynamic properties were also measured.


Practical Guide to the Assessment of the Useful Life of Rubbers

Practical Guide to the Assessment of the Useful Life of Rubbers
Author: Roger P. Brown
Publisher: iSmithers Rapra Publishing
Total Pages: 176
Release: 2001
Genre: Science
ISBN: 9781859572603

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The object of this publication is to provide practical guidance on assessing the useful service life of rubbers. It describes test procedures and extrapolation techniques together with the inherent limitations and problems. This Guide seeks to be comprehensive but concentrates on the most common environmental effects causing degradation and the most important mechanical properties of rubbers. The test procedures used are outlined and the relevant d104books and International standards are referenced.


Accelerated Aging

Accelerated Aging
Author: Robert L. Feller
Publisher: Getty Publications
Total Pages: 292
Release: 1995-03-02
Genre: Art
ISBN: 0892361255

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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.


Ageing of Rubber

Ageing of Rubber
Author: Roger P. Brown
Publisher: iSmithers Rapra Publishing
Total Pages: 200
Release: 2001
Genre: Science
ISBN: 9781859572641

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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. A long-term natural ageing programme was started in 1958 when 19 rubber compounds were exposed at 3 locations. The final sets of test pieces were withdrawn in 1998 giving a total of 40 years of natural ageing. The results of the physical tests carried out at intervals over the period were published in 2000 by Rapra in 'Natural Ageing of Rubber?Changes in Physical Properties over.


Rubber, Vulcanized Or Thermoplastic. Accelerated Ageing and Heat Resistance Tests

Rubber, Vulcanized Or Thermoplastic. Accelerated Ageing and Heat Resistance Tests
Author: British Standards Institute Staff
Publisher:
Total Pages: 26
Release: 2007-08
Genre:
ISBN: 9780580551550

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Natural rubber, Synthetic rubber, Vulcanized rubber, Plastics and rubber technology, Thermoplastic polymers, Thermal testing, High-temperature testing, Heat ageing tests, Ageing tests, Accelerated testing, Test equipment, Test specimens, Testing conditions, Reproducibility, Reports


Service Life Prediction of Polymers and Plastics Exposed to Outdoor Weathering

Service Life Prediction of Polymers and Plastics Exposed to Outdoor Weathering
Author: Christopher White
Publisher: William Andrew
Total Pages: 344
Release: 2017-10-13
Genre: Technology & Engineering
ISBN: 0323497772

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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


Thermoplastics and Thermoplastic Composites

Thermoplastics and Thermoplastic Composites
Author: Michel Biron
Publisher: Elsevier
Total Pages: 919
Release: 2007-04-26
Genre: Technology & Engineering
ISBN: 008048980X

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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