4 edition of Plastics UV stability found in the catalog.
Plastics UV stability
Mooney, Peter J.
|Statement||project analyst, Peter J. Mooney.|
|Series||Business opportunity report ;, P-080|
|LC Classifications||HD9661.A2 M67 1984|
|The Physical Object|
|Pagination||xiv, 187 leaves :|
|Number of Pages||187|
|LC Control Number||85244364|
The book is divided into five parts which cover advances in various areas of polymer additives. The first part is devoted to the progress in understanding of UV degradation and stabilization of various polymers. Oxidation degradation and stabilization of .
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One useful interaction of UV and plastics can be as fluorescent whitening agents (FWA). In natural light many polymer products can appear to have a yellow appearance. By including a special additive, the UV light absorbed is then emitted in the nm range (the blue region of visible light), which causes it to appear Size: 79KB.
Solar Light Co. makes Solar Simulator testing kits specifically for accelerated UV plastics testing. We also have the facilities to perform accelerated UV testing at various levels of humidity and temperatures.
The company’s solar simulators use a xenon arc lamp with filters and lenses to produce the entire solar UV spectrum. UV-stability of polymers.
It is well known that plastics in general and polyolefins in case of synthetic turf are sensitive to degradation when exposed to sunlight. This degradation is called photo-degradation. Photo-degradation is a process that generally results in breaking down the polymer chains in the polymer/product.
UV resistance of plastics is usually achieved by the use of additives such as UV stabilisers, black colouration (typically using carbon black) or protective surface coatings (such as paint, or metallization). The addition of carbon black is a low cost and typically very effective way of creating UV resistant plastics.
Austest Laboratories now offers UV testing of components and plastics for lightfastness, colourfastness, and photostability in a new Xenon Arc chamber reproducing the entire spectrum of sunlight, including ultraviolet (UV), visible light and infrared (IR) from nm to nm.
The chamber includes moisture through water spray, humidity and temperature. Certain plastics such as acrylic, Ultem®, PVDF, and PTFE are inherently UV stable. However, most plastic materials exhibit color change and loss of elongation when exposed to UV light.
Weathering resistance of some plastics can be improved by adding UV stabilizers or UV resistant caps to protect the base polymer. UV Light and its Effect on Plastics Ultraviolet (UV) light is probably the most damaging environment for plastics.
Although to be fair to plastics, it attacks, to a greater or lesser extent, most other materials as well. All applications of plastics which are used outdoors are therefore at risk, from roofing and window frames to vehicles.
The Effect of UV Light and Weather on Plastics and Elastomers, Fourth Edition, provides critical data on the effect of UV light and weathering on plastics and elastomers, enabling engineers, designers and R&D professionals to select the right materials when developing plastics products for a range of industries and applications.
This. Plastics UV stability book UV attack by sunlight can be ameliorated or prevented by adding anti-UV polymer stabilizers, usually prior to shaping the product by injection moulding. UV stabilizers in plastics usually act by absorbing the UV radiation preferentially, and dissipating the energy as low-level heat.
The chemicals used are similar to those in sunscreen products, which protect Plastics UV stability book from UV attack. Other chapters look at more specific aspects of UV degradation and stabilization, such as specific polymers and rubbers, analytical methods used in UV stabilization, health and safety, and more.
This book is an excellent companion to the Databook of UV stabilizers which has also been published recently. Both books supplement each other without. UV from sunlight will attack many plastics, resulting in discoloration and embrittlement.
The rate of degradation depends on the UV stability of the polymer and the use of UV stabilizers, top layers, and/or coatings to protect the material. Lower latitudes, high temperature, and humidity can accelerate the weathering process. Standard Practice for Fluorescent UV Exposure of Plastics1 This standard is issued under the ﬁxed designation D ; the number immediately following the designation indicates the year of original adoption or, in the case Plastics UV stability book revision, the year of last revision.
A number in parentheses indicates the year of last reapproval. AFile Size: 48KB. Within the last 10 years suppliers have begun to respond to industry demands for longer UV testing, and have begun raising the bar on what ‘long term’ stability means. One of the first suppliers in the world to offer moulders superior and longer term UV ratings was Australasian powder manufacturer, ICO Courtenay, (now an) when in.
Stabilizers are a class of chemical additives commonly added to polymeric materials, such as plastics, to inhibit or retard their degradation. Polymers can be subject to various degradation processes, including oxidation, UV-damage, thermal degradation, ozonolysis, combinations thereof such as photo-oxidation, as well as reactions with catalyst residues or other impurities.
ASTM's plastics standards are instrumental in specifying, testing, and assessing the physical, mechanical, and chemical properties of a wide variety of materials and products that are made of plastic and its polymeric derivatives.
During processing, these synthetic or semisynthetic organic solids have a very malleable characteristic that allows. UV Stabilizers for Engineering Plastics Engineering plastics like polyamides, polyesters, polycarbonates are majorly used for applications that demand long time U.V stabilization.
This selection guide mainly deals with the query "which UV Stabilizer is ideal for which plastic". Ultraviolet Resistance of Engineering Plastics There are some polymers that are susceptible to attack form sunlight, in particular, the ultraviolet segment of the spectrum. When ultraviolet attack occurs the material may have a color shift, become chalky on its surface, and/or crack.
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1 is reduced kion and is EFFECTS OF RADIATION ON PLASTICS borderline in stability30 single-dose Size: 1MB. Plastics UV stability: The next frontier (Business opportunity report) Jan 1, by Peter Mooney Unknown Binding.
into the effects of UV on polycarbonate degradation, with the aim of understanding some of the relationships between chemical and physical changes taking place in polycarbonate and how the overall performance of the material is affected.
The effect of UV When sunlight falls onto polycarbonate, the polycarbonate molecules absorb. Degradation of Various Plastics in the Environment cleavage of the chain to form hydroxyls, ca ge reaction between the pair o f the radicals formed, i.e., macro-alkoxy radical and hydroxyl radical HO.
The rapidly increasing ownership and production of automobiles in emerging markets such as China, India and Brazil is gradually transforming all stages of the supply chain. For automotive manufacturers, these changing economies not only represent differences in terms of consumer behavior and workforce culture, but present significant environmental : Tim Geiger.
PET is sensitive to UV light especially at elevated temperatures, under high humidity, and in the presence of oxygen—all of which are present when PET bottles are exposed to the weather.
In response, Plastic Technologies, Inc. (Holland, OH) undertook a study to understand the effects weathering would have on PET bottles exposed to Toledo, OH Author: Frank Schloss. Degradation of Plastics and Polymers D. Hourston Department of Materials, Loughborough University, UK This article is a revision of the Third Edition article by J.
Brysdon, volume 2, pp –, Elsevier B.V. Introduction Definition of ‘Plastics’ The Chemical Nature of Plastics File Size: KB. The Co-ordinated Research Project (CRP) on Stability and Stabilization of Polymers under Irradiation was initiated in based on the recommendation of the final Research Co-ordination Meeting on Radiation Damage to Organic Materials in Nuclear Reactors and Radiation Environment (IAEA-TECDOC) and the Advisory Group meeting organized in.
The UV disposable cuvettes we buy here are from BrandTech; below is a UV transmission chart for various materials from one of their marketing brochures (click image to enlarge): They've clearly had success in developing materials with even better UV transmittance (green and yellow curves) than PMMA (red curve), but it looks like the latter may.
Sunlight, Weathering & Light Stability Testing Sunlight is a major cause of damage to a number of materials, including plastics, textiles, coatings, and other organic materials.
The type of damage, such as loss of physical properties, chalking, cracking, peeling, fading, and. This book, the second edition of the first monograph fully devoted to UV degradation and stabilization ever published in English, has 12 chapters discussing different aspects of UV related phenomena occurring when polymeric materials are exposed to UV radiation.
In the introduction the existing literature has been reviewed to find out how plants. Weathering (generally UV degradation). In general, the ability of a plastic to resist these degradation causes is called the ‘stability’ of the plastic and in this article we will concentrate on the process of thermal degradation with particular emphasis on thermal degradation in service as opposed to thermal degradation during Size: 92KB.
The quick answer is the material had either no UV (Ultra Violet Light) stabilizer or very little. Most plastic materials are not UV stable to start with, other than Acrylic which is invisible to UV.
All other materials need a little something to give it the protection it may need from the sun. Henkel Glossary of Fluorescent Minerals.
A special issue of the Journal of the Fluorescent Mineral Society. Vol $ The Effect of UV Light and Weather: On Plastics and Elastomers, 2nd Edition (Plastics Design Library) - Kindle edition by Massey, Liesl K. Download it once and read it on your Kindle device, PC, phones or tablets.
Use features like bookmarks, note taking and highlighting while reading The Effect of UV Light and Weather: On Plastics and Elastomers, 2nd Edition (Plastics Design 4/5(1).
The ability of a plastic material to resist deterioration of its electrical, mechanical, and optical properties caused by exposure to light, heat, and water can be very significant for many applications. This practice is intended to induce property changes associated with end-use conditions, including the effects of ultraviolet solar.
Exposure to ultraviolet, UV, radiation may cause the significant degradation of many materials. Damage by UV radiation is commonly the main reason for the discoloration of dyes and pigments, weathering, yellowing of plastics, loss of gloss and mechanical properties (cracking), sun burnt skin, skin cancer, and other problems associated with UV Cited by: Purchase The Effect of UV Light and Weather on Plastics and Elastomers - 3rd Edition.
Print Book & E-Book. ISBNLight stabilizers / UV absorbers combat the degradation that plastics can undergo under the effects of sunlight, UV rays, heat and reaction with oxygen. The changes witnessed in a plastic can range from discoloration to formation of cracks.
Addition of light stabilizers / UV absorbers can extend the life and improve the appearance of the plastic. Plastic Additive Standards 2 AccuStandard is accredited to ISO Gu ISO/IEC and certified to ISO Antidegradants Antidegradants include a broad category of additives used in compounding to slow deterioration that can occur due to oxidation, ozone, light or any.
UV Resistanceof Plastic UV Resistance refers to a material’s ability to resist degradation from absorbing UV radiation. Materials that are not UV stable will change both in appearance and molecular structure when exposed to UV, and over time can become brittle, crack, change.
Fluorescent UV devices such as Q-Lab’s QUV and Atlas’s UV, are based on the concept that short-wave UV radiation causes the most damage to plastics exposed outdoors. Specially designed fluorescent lamps reproduce the damaging effects of sunlight in the short-wave range of to nm.
Both technically and economically, additives form a large and increasingly significant part of the polymer industry, both plastics and elastomers.
Since the first edition of this book was published, there have been wide-ranging developments, covering chemistry and formulation of new and more efficient additive systems and the safer use of additives, both by processors in the 4/5(2).Other chapters look at more specific aspects of UV degradation and stabilization, such as specific polymers and rubbers, analytical methods used in UV stabilization, health and safety, and more.
This book is an excellent companion to the Databook of UV stabilizers which has also been published recently.Polymer Stabilizers. To prevent degradation when exposed to heat, cold and uv-light, plastics require stabilization.
Specially designed plastic stabilizers protect the polymer during processing and ensure that plastic end products retain their physical properties during .