UV aging test chamber GB/T23987-2009 standard [Principle]: The use of fluorescent UV and condensation or water spray on the coating for artificial climate, the purpose is to generate agreed radiation exposure or agreed exposure time limit from the equipment, One or several properties of the coating are brought to a given degree of variation. The performance of the exposed coating is generally compared to the performance of its unexposed layer (comparative) or to the performance of a coating (reference) whose aging performance is known to be exposed at the same time. These performances are assessed using criteria agreed upon in advance by both parties.
Radiation, temperature and humidity have an impact on the aging process. Therefore, the UV aging test chamber specified in this standard simulates all three factors.
The results obtained using this method do not necessarily correspond to the results obtained under natural exposure conditions. Before using this method to predict coating (aging) performance, the correspondence between these two results needs to be determined.
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