Weathering of Plastics
testing to mirror real life performanceEdited by
- George Wypych
- George Wypych
In spite of extensive efforts, material weathering testing still requires improvement. This book presents findings and opinions of experts in material degradation testing. The aim is to improve testing methods and procedures. Materials are presented to show that photochemical degradation rate depends on a combination of environmental factors such as UV radiation, temperature, humidity, rain, stress, and concentration of reactive pollutants. The potential effect of each parameter of degradation on data gathered is discussed based on known results from a long experience in testing. This book contains data obtained in laboratories of the largest manufacturers of UV stabilizers and chemical companies that manufacture durable materials. The book gives details of testing procedures and choice of parameters of exposure which are crucial for obtaining laboratory results correlating with environmental performance of materials.In addition to exposure conditions, the book contains many suggestions on sample preparation and post-exposure testing. The effective use of these methods shortens testing time of materials and determines acceleration rate of testing. The book also gives examples of complete, well-designed weathering experiments which may be used as patterns for selection of parameters and techniques for new studies. The areas of research that still require more attention in future studies are clearly indicated.
Engineers, researchers and technicians in the plastics industry.
Published: December 1999
Imprint: William Andrew
"Everyone who is concerned about the durability of plastics...should have access to a copy of Dr. Wypych's collection of papers." - D. M. Wiles, Plastichem Consulting
- Ã² PrefaceÃ² Basic Parameters in Weathering StudiesÃ² Choices in the Design of Outdoor Weathering TestsÃ² A Comparison of New and Established Accelerated Weathering Devices in Aging Studies of Polymeric Materials at Elevated Irradiance and TemperatureÃ² Current Status of Light and Weather Fastness StandardsÃ¹New Equipment Technologies, Operating Procedures and Application of Standard Reference MaterialsÃ² Weatherability of Vinyl and Other PlasticsÃ² Aging Conditions' Effect on UV DurabilityÃ² Molecular Weight Loss and Chemical Changes in Copolyester Sheeting with Outdoor ExposureÃ² Fourier Transform Infrared Micro Spectroscopy: Mapping Studies of Weather PVC Capstock Type FormulationsII: Outdoor Weathering in PennsylvaniaÃ² Effects of Water Spray and Irradiance Level on Changes in Copolyester Sheeting with Xenon Arc ExposureÃ² Hot Water Resistance of Glass Fiber Reinforced ThermoplasticsSurface Temperatures and Temperature Measurement Techniques on the Level of Exposed Samples during Irradiation/Weathering in EquipmentÃ² Infrared Welding of Thermoplastics: Characterization of Transmission Behavior of Eleven ThermoplasticsÃ² Infrared Welding of ThermoplasticsÃ² Colored Pigments and Carbon Black Levels on Transmission of Infrared RadiationÃ² Predicting Maximum Field Service Temperatures from Solar Reflectance Measurements of VinylÃ² Residual Stress Distribution Modification Caused by WeatheringÃ² Residual Stress Development in Marine Coatings under Simulated Service ConditionsÃ² Balancing the Color and Physical Property Retention of Polyolefins Through the Use of High Performance Stabilizer SystemsÃ² Activation Energies of Polymer DegradationÃ² Failure Progression and Mechanisms of Irradiated Polypropylenes and Other Medical PolymersÃ² Chemical Assessment of Automotive Clearcoat WeatheringÃ² Effect of Aging on Mineral-Filled NanocompositesÃ² The Influence of Degraded, Recycled PP on Incompatible BlendsÃ² Interactions of Hindered Amine Stabilizers in Acidic and Alkaline EnvironmentsÃ² Interactions of Pesticides and Stabilizers in PE Films for Agricultural UseÃ² The Influence of Co-Additive Interactions on Stabilizer PerformanceÃ² New High Performance Light Stabilizer Systems for Molded-in Color TPOs: An UpdateÃ² Stabilization of Polyolefins by Photoreactive Light StabilizersÃ² Effect of Stabilizer on Photo-Degradation Depth ProfileÃ² New Light Stabilizer for Coextruded Polycarbonate SheetÃ² Ultraviolet Light Resistance of Vinyl MiniblindsÃ² Reaction Products Formed by Lead in AirÃ² Case Studies of Inadvertent Interactions between Polymers and Devices in Field ApplicationsÃ² Automotive Clear CoatsÃ² Index