Failure of Plastics and Rubber Products. Causes, Effects and Case Studies Involving Degradation

by D. Wright

Publisher: Smithers Rapra Technology

Written in English
Cover of: Failure of Plastics and Rubber Products. Causes, Effects and Case Studies Involving Degradation | D. Wright
Published: Pages: 412 Downloads: 494
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  • Industrial chemistry,
  • Science,
  • Science/Mathematics,
  • Chemistry - Industrial & Technical,
  • Science / Chemistry / Technical & Industrial
The Physical Object
Number of Pages412
ID Numbers
Open LibraryOL8622059M
ISBN 10185957517X
ISBN 109781859575178

effect of several factors, which may arise at any stage of the processing. The common failure or defects which are normally occurring in plastic extrusion process are due to three main causes: mould design, material selection, and processing. In many cases, the failures occur during the processing and these failures causes some defects that can. Wright, D. C. Failure of plastics and rubber products– causes, effects and case studies involving degradation. RAPRA Technology Report, Google Scholar.   Gates that are too small will cause restrictive friction to the flow of the molten plastic, and this can cause degradation of the material at that spot in the mold. The degraded, decomposed material enters the cavity and may be forced to the surface in the form of a typical splay pattern. Solution: Examine the gates to make sure there are no burrs. 3. Failure—causes and analysis of failure resulting due to material damage and degradation, cracking, and debonding. 4. Dynamics—shock and vibration isola - tion concerns, damping, harmonic analysis of viscoelastic materials, time versus frequency domain viscoelastic analysis, and implicit versus explicit direct time integration methods. 5.

Plastics are light weighted, durable, corrosion resistant materials, strong, and inexpensive. Scientists have reported many adverse effects of the plastic in the environment and human health. Nowadays biodegradable plastics are considered as the environmental friendly. The plastic polymers as such at room temperatures are not considered as toxic. This article reviews the mechanical behavior and fracture characteristics that discriminate structural polymers from metals. It provides information on deformation, fracture, and crack propagation as well as the fractography involving the examination and interpretation of fracture surfaces, to determine the cause of failure. It discusses plasticization, solvation, and swelling in rubber products. The article further describes environmental stress cracking and degradation of polymers. It illustrates how surface degradation of a plain strain tension specimen alters the ductile brittle transition in polyethylene creep rupture. An example of one of the several failure analysis of plastics projects recently undertaken at Impact is shown below. Failure analysis of plastics. A plastic part was found to exhibit brittle behaviour and as a result failed quality control tests. The plastic part had been extruded from a regrind acrylonitrile-butadiene-styrene (ABS) resin.

  Plastics have been with us for more than a century, and by now they’re everywhere, for good and for ill. Plastic containers and coatings help keep food fresh, but they can also leave behind neurotoxins such as BPA in the human body. PVC is used for everything from pipes and flooring to furniture and clothes, but it contains compounds called phthalates that have been implicated in male. ful conclusions to their separate cases of plastics failure in water service. The cases are included in Sections and Many of the failures in the book were first presented at the Annual Technical Conferences of the Society of Plastics Engineers (ANTEC-SPE) . Table of Contents Myer Ezrin Plastics Failure Guide Cause and Prevention ISBN (Buch): ISBN (E-Book): For further information and order see. Material Properties of Plastics Formation and Structure The basic structure of plastics (or polymers) is given by macromolecule chains, formulated from monomer units by chemical reactions. Typical reactions for chain assembling are polyaddition (continuous or step wise) and condensation polymer-ization (polycondensation) [1] (Figure ).

Failure of Plastics and Rubber Products. Causes, Effects and Case Studies Involving Degradation by D. Wright Download PDF EPUB FB2

Request PDF | OnPeter R Lewis published Failure of Plastics and Rubber Products: Causes, Effects and Case Studies Involving Degradation | Failure of Plastics and Rubber Products.

Causes, read and cite all the research you Author: Peter R. Lewis. The author provides this book as the product of over cases he personally conducted.

It is a masterpiece, including charts and tables of Failure of Plastics and Rubber Products. Causes types of failures while explaining each kind in detail in each chapter. Case studies and photos accompany with recommended fix for each. A real must-have. Get this with Plastics Failure Guide (Ezrin).Cited by: Failure of Plastics and Rubber Products.

Causes, Effects and Case Studies Involving Degradation; Failure of Plastics and Rubber Products. Causes, Effects and Case Studies Involving Degradation most comprehensive set of data on PVC ever assembled.\ucbr\ue\ucbr\ueThe concept of this and a companion book (PVC Degradation \uamp.

Electronic Device Failure Analysis Society. Heat Treating Society. Failure of Plastics and Rubber Products: Causes, Effects and Case Studies Involving Degradation. Web Content Display. Web Content Display is temporarily unavailable.

Follow Us On. Who We Are. /S(01) /S(01) There is a dearth of literature dealing with real-life case studies of product failure, so it is very pleasing to review the book just published by David Wright. He spent much of his career as Technical Director of RAPRA, and this book details a few of the many cases which have been referred to them.

Failures due to degradation may result from exposure to the weather or an aggressive operating environment. Alternatively they may be caused by the introduction of an external agent unforeseen.

Get this from a library. Failure of plastics and rubber products: causes, effects and case studies involving degradation. [D C Wright; Rapra Technology Limited.]. What are the commercial implications of under-performing plastics and rubber products or components.

Expensive warranty claims, legal disputes and product recalls are some of the most serious consequences of an unexpected or premature failure of plastic and rubber products. Brand and market perception can also be adversely affected.

Root cause of the failure related to the usage environment Degradation of molded parts is divided into degradation caused by the chemical reactions such as ultraviolet degradation, thermal oxidative degradation, hydrolysis degradation, and chemical exposure degradation and degradation caused by physical effects such as creep, vibration, and heat.

Thermal-Oxidative Degradation of Rubber Most elastomers will undergo significant changes over time when exposed to heat, light, or oxygen (ozone). These changes can have a dramatic effect on the service life and properties of the elastomers and can only be prevented or slowed down by the addition of UV stabilizers, antiozonates, and antioxidants.

• The second component (40%) will be structured around case studies of polymer design and failure with an emphasis on student participation and in class discussion.

It is aimed at the “design” of a polymeric product building on the topics learned in the first component of the course and the case studies discussed in class. Buy Failure of Plastics and Rubber Products: Causes, Effects and Case Studies Involving Degradation by Wright, D.C. (ISBN: ) from Amazon's Book Store.

Everyday low prices and free delivery on eligible s: 1. Book • Second Edition • Causes, and Consequences of Plastics Failure. Book chapter Full text access. A Preliminary Look at the Nature, Causes, and Consequences of Plastics Failure. Pages Select Fundamental Materials Variables Affecting Processing and Product Performance or Failure.

degradation, and fatigue. In the case of failure involving fracture, the determination of the fail-ure mode involves identifying how the crack ini- plemented by a series of case studies. The is one of the leading causes of plastic failure.

The chemical agent. DeepDyve is the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

Four case studies are presented to illustrate failures associated with the interaction between plastic components and metal fasteners. The use of metal fasteners to secure and assemble plastics is widespread. The presented cases illustrate how the failure analysis process was used to identify the failure mechanism as well as the primary.

Wright, D () Failure of plastics and rubber products: causes, effects and case studies involving degradation. Rapra Technology Limited, Shrewsbury Google Scholar.

D.C. Wright, T.L. RapraFailure of plastics and rubber products: Causes, effects and case studies involving degradation Rapra Technology Ltd, Shrewsbury () Google Scholar.

Plastic materials can be divided into several classes, the most common being thermoset and thermoplastic. Within each of these groups there are subgroups that further define plastic. For example, a thermoplastic is generally classified as being semicrystalline or amorphous depending on the level of crystallinity that exists.

All these different groups of plastics have unique properties that. Causes, Effects and Case Studies Involving Degradation.

Rapa Technology Limited, Shawbury, Shrewsbury, Shropshire, United Kingdom, Polymer mechanical properties – why bother Human Causes of Plastics Product Failure: n. Despite advances in plastic manufacturing and continuous attempts to make durable, long-lasting plastic, the material can still experience failure.

When a part or product fails, the consequences can be severe. Therefore, it’s especially important to identify common types of failure and their underlying causes. Find helpful customer reviews and review ratings for Failure of Plastics and Rubber Products: Causes, Effects and Case Studies Involving Degradation at Read honest and unbiased product reviews from our users.5/5.

Plastic Pollution: Causes and Effects of This Very Serious Issue. Plastic is a non-biodegradable product, with the potential to cause great harm to the environment.

This article highlights the effects of plastic pollution, while also telling you about the causes of this problem, and some solutions. Heat (thermal degradation and thermal oxidative degradation when in the presence of oxygen). Light (photodegradation). Oxygen (oxidative degradation).

Weathering (generally UV degradation). In general, the ability of a plastic to resist these degradation causes is called the ‘stability’ of the. Many references are given in this book to real products and real cases of their failure.

The products discussed include office equipment, automotive compressed fuel gas system, pipes, polymer blends, blow molded parts, layered, cross-ply and continuous fiber composites, printed circuits, electronic packages, hip implants, blown and multilayered.

Purchase Plastics Failure Analysis and Prevention - 1st Edition. Print Book & E-Book. ISBNat the Nature, Causes, and Consequences of Plastics Failure Introduction This book is not the fi rst to deal with plastics failure. For example, Failure of Plastics [1] provides detailed reviews of many types of failure, including theoretical aspects.

The present work picks up from that point, and concentrates on the practical tech. M olecular degradation is a leading cause of plastic component failure, with a study indicating that 17% of plastic failures are associated with a degradation mechanism.

1 In generic terms, molecular degradation of a plastic is the deleterious alteration of the molecular structure within the polymer as the result of a chemical reaction. Case Study for Sustainability: The Future of Plastics For more than years plastic has been one of the most important materials we use to create the stuff of our physical world.

Plastics are inexpensive, durable, versatile, and ubiquitous in our lives. For all their benefits, though, plastics also present challenges. Plastics are made with fossil fuels and keep us dependent.

Some plastics, most notably highly vulcanized hard rubber (Ebonite, Vulcanite), CN, and CA, degrade by hydrolysis to produce ionic degradation products (sulfates, nitrates and acetates) that can react with atmospheric pollution or compounds in the plastic or surrounding materials to produce deliquescent accretions like ammonium sulfate.

Degradation of Plastics and Polymers D. J. Hourston Department of Materials, Loughborough University, UK This article is a revision of the Third Edition article by J. A. Brysdon, volume 2, pp –, Elsevier B.V.Plastic waste is currently generated at a rate approaching Mt year–1.

The amount of plastics accumulating in the environment is growing rapidly, yet our understanding of its persistence is very limited. This Perspective summarizes the existing literature on environmental degradation rates and pathways for the major types of thermoplastic polymers.

A metric to harmonize disparate types of.Plastics Failure: Analysis and Prevention contains analysis of reasons that cause products to fail. General methods of product failure evaluation give powerful tools in product improvement. Such methods, discussed in the book, include practical risk analysis, failure mode and effect analysis, preliminary hazard analysis, progressive failure analysis, fault tree analysis, mean time between.