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| Photo-Oxidation Aging Behaviors of Polycarbonate under Various Test Conditions |
| Received:October 14, 2015 Revised:April 15, 2016 |
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| DOI：10.7643/issn.1672-9242.2016.02.013 |
| KeyWord:polycarbonate outdoor exposure test natural accelerated exposure test test of exposure to laboratory light sources photo-oxidation aging relativity |
| Author | Institution |
| WANG Yan-yan |
1. Southwest Technology and Engineering Research Institute， Chongqing ，China;2. Chongqing Engineering Research Center for Environmental Corrosion and Protection，Chongqing ， China |
| CHEN Liang |
Southwest Technology and Engineering Research Institute， Chongqing ，China |
| HU Wei |
1. Southwest Technology and Engineering Research Institute， Chongqing ，China;2. Chongqing Engineering Research Center for Environmental Corrosion and Protection，Chongqing ， China |
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| Abstract: |
| Objective To study the photo-oxidation aging behaviors of polycarbonate under various test conditions. Methods The impact strength changes of polycarbonate in outdoor exposure test, natural accelerated exposure test and test of exposure to laboratory light sources were contrasted. The simulation performances of various accelerated exposure tests for outdoor exposure test were analyzed respectively. Results The impact strength of polycarbonate reduced with prolonging test time in outdoor exposure test at Lhasa test station. The simulation performance of both sun tracking exposure test and natural sunlight concentrated exposure test for outdoor exposure test was good, while the acceleration factors of these two natural accelerated exposure tests were 1.5 and 6, respectively. The simulation performance of test of exposure to Xenon-arc sources for outdoor exposure test was better than that of the test of exposure to fluorescent UV lamps or metal halide lamps. Conclusion The recommended accelerated test conditions for evaluating photo-oxidation aging behaviors of polycarbonate was natural sunlight concentrated exposure test or test of exposure to Xenon-arc sources. |
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