Weathering of Plastics

testing to mirror real life performance

Edited by

  • George Wypych, ChemTec Publishing, Ontario, Canada


  • George Wypych, ChemTec Publishing, Ontario, Canada

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.
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Engineers, researchers and technicians in the plastics industry.


Book information

  • Published: December 1999
  • ISBN: 978-1-884207-75-4


"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

Table of Contents

ò Prefaceò Basic Parameters in Weathering Studiesò Choices in the Design of Outdoor Weathering Testsò A Comparison of New and Established Accelerated Weathering Devices in Aging Studies of Polymeric Materials at Elevated Irradiance and Temperatureò Current Status of Light and Weather Fastness StandardsùNew Equipment Technologies, Operating Procedures and Application of Standard Reference Materialsò Weatherability of Vinyl and Other Plasticsò Aging Conditions' Effect on UV Durabilityò Molecular Weight Loss and Chemical Changes in Copolyester Sheeting with Outdoor Exposureò Fourier Transform Infrared Micro Spectroscopy: Mapping Studies of Weather PVC Capstock Type FormulationsII: Outdoor Weathering in Pennsylvaniaò Effects of Water Spray and Irradiance Level on Changes in Copolyester Sheeting with Xenon Arc Exposureò Hot Water Resistance of Glass Fiber Reinforced ThermoplasticsSurface Temperatures and Temperature Measurement Techniques on the Level of Exposed Samples during Irradiation/Weathering in Equipmentò Infrared Welding of Thermoplastics: Characterization of Transmission Behavior of Eleven Thermoplasticsò Infrared Welding of Thermoplasticsò Colored Pigments and Carbon Black Levels on Transmission of Infrared Radiationò Predicting Maximum Field Service Temperatures from Solar Reflectance Measurements of Vinylò Residual Stress Distribution Modification Caused by Weatheringò Residual Stress Development in Marine Coatings under Simulated Service Conditionsò Balancing the Color and Physical Property Retention of Polyolefins Through the Use of High Performance Stabilizer Systemsò Activation Energies of Polymer Degradationò Failure Progression and Mechanisms of Irradiated Polypropylenes and Other Medical Polymersò Chemical Assessment of Automotive Clearcoat Weatheringò Effect of Aging on Mineral-Filled Nanocompositesò The Influence of Degraded, Recycled PP on Incompatible Blendsò Interactions of Hindered Amine Stabilizers in Acidic and Alkaline Environmentsò Interactions of Pesticides and Stabilizers in PE Films for Agricultural Useò The Influence of Co-Additive Interactions on Stabilizer Performanceò New High Performance Light Stabilizer Systems for Molded-in Color TPOs: An Updateò Stabilization of Polyolefins by Photoreactive Light Stabilizersò Effect of Stabilizer on Photo-Degradation Depth Profileò New Light Stabilizer for Coextruded Polycarbonate Sheetò Ultraviolet Light Resistance of Vinyl Miniblindsò Reaction Products Formed by Lead in Airò Case Studies of Inadvertent Interactions between Polymers and Devices in Field Applicationsò Automotive Clear Coatsò Index