Use of Uniformly Distributed Concentrated Sunlight for Highly Accelerated Testing of Coatings

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NREL has developed a new ultraviolet (UV) light concentrator that allows material samples to be subjected to uniform intensity levels of 50-100X solar UV at closely controlled sample exposure temperatures. In collaboration with industry, representative coating systems have been exposed without introducing unrealistic degradation mechanisms. Furthermore, correlations have been derived between these highly accelerated test conditions and results obtained at 1-2 suns. Such information is used to predict the degradation of materials in real-world applications. These predictions are compared with measured in-service performance losses to validate the approach. This allows valuable information to be obtained in greatly reduced timeframes, which ... continued below

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Jorgensen, G.; Bingham, C.; King, D.; Lewandowski, A.; Netter, J.; Terwilliger, K. et al. December 14, 2000.

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Description

NREL has developed a new ultraviolet (UV) light concentrator that allows material samples to be subjected to uniform intensity levels of 50-100X solar UV at closely controlled sample exposure temperatures. In collaboration with industry, representative coating systems have been exposed without introducing unrealistic degradation mechanisms. Furthermore, correlations have been derived between these highly accelerated test conditions and results obtained at 1-2 suns. Such information is used to predict the degradation of materials in real-world applications. These predictions are compared with measured in-service performance losses to validate the approach. This allows valuable information to be obtained in greatly reduced timeframes, which can provide tremendous competitive advantage in the commercial marketplace.

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  • ACS Conference-Service Life Prediction of Organic Coatings: Methodologies and Metrologies, Monterey, CA (US), 11/1999

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  • Report No.: NREL/CP-520-28579
  • Grant Number: AC36-99GO10337
  • Office of Scientific & Technical Information Report Number: 772423
  • Archival Resource Key: ark:/67531/metadc719301

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  • December 14, 2000

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  • Sept. 29, 2015, 5:31 a.m.

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  • March 31, 2016, 8:35 p.m.

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Jorgensen, G.; Bingham, C.; King, D.; Lewandowski, A.; Netter, J.; Terwilliger, K. et al. Use of Uniformly Distributed Concentrated Sunlight for Highly Accelerated Testing of Coatings, article, December 14, 2000; Golden, Colorado. (digital.library.unt.edu/ark:/67531/metadc719301/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.