In numerous applications, for example as part of a façade, plastic profiles are exposed to UV radiation and weathering. In order to determine their effects on profiles, they are extensively tested.
In everyday language, UV resistance usually refers to the material durability of a component when stored outdoors. Inherently, outdoor storage includes many other influences relevant to ageing in addition to the effects of UV radiation from sunlight, such as the effects of wind, moisture, temperature fluctuations and pollutants. mobil Kunststoffprofile tests profiles in accordance with various standards, often focusing on partial aspects of material resistance or outdoor influences. Strictly speaking, reliable statements on the resistance of plastics can only be determined from outdoor weathering tests under real conditions. However, since outdoor weathering tests are quite lengthy, they are only carried out on a selective basis.
The standard DIN EN ISO 4892-2 deals with artificial irradiation or weathering of equipment. It assesses the ageing of samples after irradiation, for example, based on physical technological parameters, which are carried out comparatively on non-irradiated and irradiated samples. Among other things, it involves tensile tests. When the product is additionally sprayed with water in defined cycles during irradiation, it is referred to as weathering instead of irradiation.
The DIN 75220 standard specifies the irradiation of interior and exterior components in a sun simulation chamber. In this case, a distinction is made between cycle and endurance tests. Parallel to this testing, climatic stress (humidity, temperature) of the components can also be mapped.
The test standard PV 1303 of Volkswagen AG (VW/Audi) defines the heat exposure of components made of non-metallic materials in vehicle interiors. The objective is to record colour fastness and resistance to light and heat.
The standard DIN EN ISO 105-B06 describes the procedure for testing colour fastness and ageing of components against artificial light at high temperatures. A xenon arc lamp is used for this purpose.