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

    Research output: Contribution to conferencePaper

    Abstract

    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 betweenthese 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 advantagein the commercial marketplace.
    Original languageAmerican English
    Number of pages20
    StatePublished - 2000
    EventACS Conference--Service Life Prediction of Organic Coatings: Methodologies and Metrologies - Monterey, California
    Duration: 1 Nov 19991 Nov 1999

    Conference

    ConferenceACS Conference--Service Life Prediction of Organic Coatings: Methodologies and Metrologies
    CityMonterey, California
    Period1/11/991/11/99

    NREL Publication Number

    • NREL/CP-520-28579

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