Micom offers test services to ASTM D2565-99 (2008) – Standard Practice for Xenon-Arc Exposure of Plastics Intended for Outdoor Applications – as part of its UV testing services. This practice covers specific procedures and test conditions based on practices ASTM G151 and ASTM G155. ASTM D2565 also covers the preparation of test specimens, the test conditions best suited for plastics, and the evaluation of test results.
Use and factors to be considered:
Polymers can have their mechanical, electrical and optical properties significantly altered when exposed under outdoor conditions: ultraviolet radiations, heat, and water. This method is intended to induce property changes associated with end-use conditions, including the effects of daylight, moisture, and heat. Note: depending of the actual use conditions, other accelerated aging phenomenon might also be considered e.g.: salt water, temperature and humidity cycling, ozone…
Pigments used to color the plastics are different in chemical composition. When offering different colors of the same material; different colors should be tested.
Typical Experimental parameters:
To perform a relevant accelerated weathering test to ASTM D2565 that is right for your application the following test parameters need to be defined carefully:
- Lamp filters (inner and outer)
- The lamp irradiance level
- The type and duration of moisture exposure
- The duration of the light exposure
- The cabinet temperature during light exposure
- The temperature of moisture exposure
- The timing of a light/dark cycle.
Should you need guidance in deciding which test cycle or test conditions should be used for your specific needs; please feel free to contact us.
Other test methods related to ASTM D2565:
We also invite you to download our PDF on the true color measurement: What is the difference between the “true” color of an item and its “perceived” color (by the human eye)?
We also invite you to download our brochure to learn more about our Paint, Coating and Polymer testing services.