|
| Application of Comprehensive Accelerated Test Technology in Rapid Evaluation of Polyurethane Coating in Low Pressure Environment |
| Received:April 19, 2021 Revised:June 17, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.12.019 |
| KeyWord:low pressure synthesis acceleration switchover factor polyurethane acceleration |
| Author | Institution |
| XIANG Jiang-tao |
Southwest Institute of Technology and Engineering, Chongqing , China |
| YANG Xiao-kui |
Southwest Institute of Technology and Engineering, Chongqing , China |
| YANG Xiao-ran |
Southwest Institute of Technology and Engineering, Chongqing , China |
| LI Di-fan |
Southwest Institute of Technology and Engineering, Chongqing , China |
| ZHANG Shi-yan |
Southwest Institute of Technology and Engineering, Chongqing , China |
| WU Shuai |
Southwest Institute of Technology and Engineering, Chongqing , China;Lhasa Tibet, Materials Corrosion in Atmospheric Environment, National Observation & Research Station, Lhasa , China |
|
| Hits: |
| Download times: |
| Abstract: |
| To study the acceleration of adaptable evaluation for comprehensive accelerated test technology in Polyurethane Coating in low pressure environment, the comprehensive accelerated test in low pressure environment and natural environment test in low pressure environment of polyurethane coating were carried out to analyze the aging mechanism, color difference and glossiness change rule of polyurethane coating in the two environmental tests, and the process of test data with the method of acceleration switchover factor (ASF) was conducted to analyze the acceleration of comprehensive accelerated test technology in low pressure environment. The aging mechanism, color difference and glossiness of polyurethane coating in comprehensive accelerated test in low pressure environment after 60 days were basically the same as those of natural environment test in low pressure after 12 months. Accelerated ratio of comprehensive accelerated test in the low pressure environment decreased as the test time prolonged, and the highest accelerated ratio was 24 times and the lowest was 10 times. The comprehensive accelerated test technology in low pressure environment comprehensively not only simulates the conditions of solar radiation, air pressure, temperature and humidity in natural environment, but also can acquire great acceleration, which is suitable for rapid adaptable evaluation of polyurethane coating in low pressure environment. |
| Close |
|
|
|