Advanced Test Setup for Accelerated Aging of Plastics by Visible LED Radiation
1
Photonics and Materials Science, Hamm-Lippstadt University of Applied Sciences, Marker Allee 76-78, 59063 Hamm, Germany
2
L-LAB, Research Institute for Automotive Lighting and Mechatronics, Rixbecker Str. 75, 59552 Lippstadt, Germany
3
Department of Materials Test Engineering, TU Dortmund University, Baroper Str. 303, 44227 Dortmund, Germany
*
Author to whom correspondence should be addressed.
Materials 2020, 13(19), 4261; https://doi.org/10.3390/ma13194261
Received: 20 August 2020
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Revised: 21 September 2020
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Accepted: 22 September 2020
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Published: 24 September 2020
(This article belongs to the Section Corrosion)
In this article, a newly developed test setup for the aging of optical plastics by visible radiation (450 nm) is presented. In addition to a comprehensive monitoring of the operating parameters and an efficient cooling of the high-power multiple chips on board the LEDs used, the plastic samples can be fully temperature-controlled, independent of the radiant power of the LED, due to fluid driven thermostatization. The sample surface temperatures and irradiance values were verified by in situ measurements and simulations. To validate the test setup, polycarbonate samples with well-known aging behavior were aged for 1896 h. By spectroscopic IR and UV/vis analysis of the samples at different aging times, known optical aging results of polycarbonate could be observed, which proves the intended operationality of the system.
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Keywords:
advanced irradiation setup; photodegradation; blue light; LED; polycarbonate; accelerated aging; optical materials
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MDPI and ACS Style
Hemmerich, M.; Meyer, J.; Walther, F. Advanced Test Setup for Accelerated Aging of Plastics by Visible LED Radiation. Materials 2020, 13, 4261. https://doi.org/10.3390/ma13194261
AMA Style
Hemmerich M, Meyer J, Walther F. Advanced Test Setup for Accelerated Aging of Plastics by Visible LED Radiation. Materials. 2020; 13(19):4261. https://doi.org/10.3390/ma13194261
Chicago/Turabian StyleHemmerich, Moritz, Jörg Meyer, and Frank Walther. 2020. "Advanced Test Setup for Accelerated Aging of Plastics by Visible LED Radiation" Materials 13, no. 19: 4261. https://doi.org/10.3390/ma13194261
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