Comparative Testing
One of the primary applications of xenon-arc weathering testing is the qualification of new and improved polymer materials. This process typically involves several hundred to 1,000 hours of testing, in which materials are exposed to a specific laboratory weathering cycle of light, heat, and moisture. The goal is to evaluate the amount of degradation that occurs and determine whether the new material meets specific pass-fail criteria.
By comparing the performance of new materials to existing ones, research teams can further rank the new candidates. The data obtained from these qualification tests are essential for making primary decisions about the most appropriate material selection for a new product.
Extended Testing and Natural Exposure
Extended testing goes one step further. This involves testing materials for periods typically exceeding 1,000 hours. For example, automotive exterior parts are sometimes tested for up to 4,500 hours to determine their long-term performance over several years. A key aspect is the determination of the Acceleration Factor (AF), which indicates how much faster a xenon-arc weathering test achieves the same amount of degradation (specific property change of a given material) compared to standard natural exposure conducted in parallel. Natural testing is typically done in a benchmark climate such as Miami or Phoenix.
Standardized natural exposures at the Atlas DSET facility in Phoenix, Arizona
Such correlation studies play a vital role in this extended testing, helping to establish the relationship between accelerated testing and real-world conditions. By understanding this correlation, manufacturers can gain confidence in the required service life of materials and ensure that products meet their durability expectations.
In summary, xenon-arc weathering testing is an indispensable tool for qualifying new polymer materials and gaining insights into their potential lifetime – especially in comparison to previously used materials.
More Information
For further guidance on specific xenon-arc weathering applications and the most frequently used test methods, have a look at our library, or review upcoming educational events.