Whether used as housings, lighting elements, protective covers or outdoor furniture – plastics exposed to the elements or intense light must withstand a lot. But how can we tell how well a plastic ages? And how can that be evaluated without waiting for years?
This is exactly where the xenon test comes in: A proven laboratory method that simulates artificial weathering caused by sunlight, heat and humidity. Within just a few weeks, it provides insights that would take years to gather through natural exposure.
What actually happens during a xenon test?
In essence, a material – such as a plastic specimen – is placed into a test chamber equipped with a xenon arc lamp that mimics natural sunlight. The sample is also exposed to defined levels of heat and moisture. It may sound simple, but the combination is highly effective: typical weathering conditions can be simulated in a controlled and accelerated manner.
The goal is to observe how colors, surfaces or mechanical properties change. Does the material become brittle? Does it yellow? Do cracks form? This enables the comparison and optimization of materials, without long-term outdoor testing.
Why is this particularly relevant for PMMA?
A prime example for the use of xenon testing is PMMA (polymethyl methacrylate) – widely known as acrylic glass. It’s crystal clear, lightweight and highly versatile but also sensitive to UV radiation. If PMMA becomes brittle or discolored, both its appearance and functionality may be compromised.
With xenon testing, different formulations or additives can be tested specifically: Which one provides better protection? How long does the material remain optically and mechanically stable? Especially for transparent or colored applications, assessing long-term weatherability is crucial.
What standards apply?
To ensure that xenon tests deliver meaningful and comparable results, they must follow standardized protocols, such as:
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ISO 4892-2 – for plastics
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DIN EN ISO 16474-2 – for coated surfaces
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ASTM G155 – commonly used in North America
These standards define parameters such as light intensity, chamber temperature, exposure duration and humidity cycles.
Why is it worth the effort?
Because it pays off. Testing early in the development process helps manufacturers understand how their products will perform under real-world conditions and enables targeted improvements. For outdoor applications, architectural elements, automotive components or long-lasting consumer goods, this can make a decisive difference.
Conclusion
The xenon test for plastics offers a glimpse into the future: it shows how materials age under realistic conditions and what can be done to improve their durability.
At Polytives, we are incorporating xenon testing into our own material evaluation processes. We’re excited about the insights it will bring – stay tuned!
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