The ISO 4892-2 standard, developed by the International Organization for Standardization (ISO), describes methods for exposing samples to xenon arc light in the presence of moisture to reproduce the weathering effects that occur when materials are exposed to sunlight or filtered sunlight through window glass in real end-use environments. During tests, samples are exposed to filtered xenon arc light under controlled conditions (temperature, humidity and/or wetting). Various types of xenon arc light sources and various combinations of filters are used in these tests to meet different requirements.
ISO 4892-2 is a standard that specifies test conditions replicating the effects of weathering on plastic materials through the use of humidity and xenon arc light. The focus of this standard is on the characteristics of the light used and all the conditions that must be met in accelerated aging. In fact, it is possible to replicate the characteristics of daylight passing through a glass window or being exposed to direct sunlight by using appropriate filters. By combining the effects of these filters with apparatus conditions, it is possible to simulate end-use conditions to make a better assessment of the material's performance over time. Xenon arc light exposure is generally used to evaluate aesthetics, as the light source has an emission spectrum that matches the portion of the solar spectrum responsible for causing color fading.
The main factors that play a role when performing an exposure are: type of light filter, timing of exposure time, irradiance level, temperature and relative humidity in the cabinet.
Essentially, the ISO 4892 standard consists of the following sections under the main heading "Plastics - Methods of exposure to laboratory light sources":
Among the numerous test, measurement, analysis and evaluation studies that our organization provides for businesses in various sectors, with its trained and expert staff and advanced technological equipment, within the scope of ISO 4892-2 standard, xenon arc lamps testing services are among the methods of exposure of plastics to laboratory light sources. gives.
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