Q-UV artificial weathering of films and papers
Artificial weathering is an indispensable method for evaluating the long-term durability of plastics. With the help of modern testing devices, such as the Q-UV device, damage caused by UV radiation and moisture can be simulated in a targeted manner. Standardised procedures according to DIN EN ISO 4892-3 and DIN EN 14932 allow realistic ageing processes to be efficiently reproduced. This method provides important insights, particularly for applications in the construction, automotive and agricultural industries. The results are a significant aid to product development and quality assurance.
Artificial weathering of plastics is an essential part of materials testing. It is used to assess the long-term durability of materials when exposed to UV radiation, humidity and temperature. While test methods using xenon arc lamps simulate a broad light spectrum, UV fluorescent lamps enable targeted investigations in the short-wave UV range.
With the addition of a Q-UV device, tests can now be carried out in accordance with DIN EN ISO 4892-3 and DIN EN 14932. These standards define test methods for the artificial weathering of plastics with UV radiation and moisture. The procedure is particularly relevant for applications in which plastics are exposed to intense solar radiation, such as in the building industry, in the automotive industry or especially in agriculture.
The Q-UV tester simulates the damaging effect of UV light and moisture by cyclically exposing the samples. UV fluorescent lamps that emit in defined wavelength ranges are used. Radiation in the UV range has a high energy density and is capable of breaking molecular bonds in plastics. This process leads to embrittlement, discolouration or a loss of mechanical properties.
In addition to UV radiation, the sample is periodically exposed to moisture in the form of condensation or spray. This cyclical combination of radiation and moisture provides a realistic ageing simulation that is highly relevant to various classes of materials.
Advantages and areas of application
- More precise ageing simulation: specific damage mechanisms can be examined through targeted UV irradiation.
- Standardised test procedures: meets the requirements of DIN EN ISO 4892-3 and DIN EN 14932.
- Comparability with natural weathering tests: artificial weathering enables an accelerated evaluation, the results of which can be correlated with field tests.
- Wide range of applications: the method is suitable for plastics, paints, coatings and other polymeric materials.
The addition of Q-UV to the test capabilities complements existing artificial weathering methods and allows detailed assessment of material ageing under specific conditions. This knowledge is vital for both product development and quality assurance across a range of industries.
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