Practical Guide to the Assessment of the Useful Life of Plastics

Practical Guide to the Assessment of the Useful Life of Plastics
Author :
Publisher : iSmithers Rapra Publishing
Total Pages : 196
Release :
ISBN-10 : 1859575021
ISBN-13 : 9781859575024
Rating : 4/5 (21 Downloads)

Book Synopsis Practical Guide to the Assessment of the Useful Life of Plastics by : R. Brown

Download or read book Practical Guide to the Assessment of the Useful Life of Plastics written by R. Brown and published by iSmithers Rapra Publishing. This book was released on 2002 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: After price and delivery time, the most frequently asked question about a product is 'How long will it last?' Lifetime expectancy is often many years, the service conditions may be complex, and there is a scarcity of definitive data on durability. The situation is complicated by the fact that there are a vast number of degradation agents, service conditions, properties of importance and different plastics. There are many inherent difficulties in designing durability tests. In many cases, the time scale involved is such that accelerated test conditions are essential. Whilst large amounts of durability data are generated by accelerated methods, much of it is only useful for quality control purposes and relatively little has been validated as being realistically capable of representing service. Most assessments of the lifetime of plastics are made by considering some measure of performance, such as impact strength, and specifying some lower limit for the property, which is taken as the end point. Lifetime is not necessarily measured in time. For example, for some products it will be thought of as the number of cycles of use. The object of this publication is to provide practical guidance on assessing the useful service life of plastics. It describes test procedures and extrapolation techniques together with the inherent limitations and problems. The Guide aims to make available the wealth of information that can be applied to help maximise the effectiveness of a durability-testing programme. This guide seeks to be comprehensive but concentrates on the most common environmental effects causing degradation. The test procedures used are outlined and the relevant textbooks and international standards are well referenced. Examples of lifetime testing studies are cited. The Practical Guide will be useful for anyone responsible for designing, manufacturing or testing plastic components. It will also be of benefit to suppliers and users of end products, as assessment of useful lifetime is critical to the economics and safety aspects of any component. Key features Test methods outlined Accelerated testing discussed Prediction methods described Standards cited Key sources of information listed


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