Лако-красочные материалы — производство

Weather resistance in an accelerated test is defined as the resistance of plastics towards changes caused by simulated open-air weathering (simulation of global radiation by means of filtered xenon arc radiation and periodic rain). After the weathering (measured by the product of intensity and duration), defined properties of the test sample are compared with those of an identical unweathered sample. Properties should be considered which are of practical importance, such as color or surface properties. For standards, see Table 1.1 (“Weathering in apparatus”). Apparatus: test chamber, rain and air humidification equipment, airflow equipment, radiation measuring equipment.