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| Experimental Design for Evaluating the Aging Resistance of Polyurethane Foam Matrix Used to Absorb Electromagnetic Wave Structure |
| Received:November 02, 2019 Revised:December 26, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2020.06.006 |
| KeyWord:absorbing structure matrix polyurethane foam aging resistance elongation at break experiment design |
| Author | Institution |
| ZHANG Xian-yong |
Southwest Technology and Engineering Research Institute, Chongqing , China;Natural Environmental Test and Research Center of Science, Chongqing , China;Mohe Heilongjiang, Materials Corrosion in Atmospheric Environment, National Observation & Research Station, Mohe, China |
| YANG Wan-jun |
Southwest Technology and Engineering Research Institute, Chongqing , China;Natural Environmental Test and Research Center of Science, Chongqing , China;Wanning Hainan, Materials Corrosion in Atmospheric Environment, National Observation & Research Station, Wanning , China |
| ZHANG Yan-xia |
Southwest Technology and Engineering Research Institute, Chongqing , China |
| LUO Yong |
Southwest Technology and Engineering Research Institute, Chongqing , China;Natural Environmental Test and Research Center of Science, Chongqing , China;Wanning Hainan, Materials Corrosion in Atmospheric Environment, National Observation & Research Station, Wanning , China |
| XIAO Min |
Southwest Technology and Engineering Research Institute, Chongqing , China;Natural Environmental Test and Research Center of Science, Chongqing , China;Wanning Hainan, Materials Corrosion in Atmospheric Environment, National Observation & Research Station, Wanning , China |
| LUO Dan |
Southwest Technology and Engineering Research Institute, Chongqing , China;Natural Environmental Test and Research Center of Science, Chongqing , China;Mohe Heilongjiang, Materials Corrosion in Atmospheric Environment, National Observation & Research Station, Mohe, China |
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| Abstract: |
| The paper aims to design an environmental worthiness test to determine the applied environmental stress and characterization parameters of aging properties of the polyurethane foam matrix to evaluate the aging resistance of polyurethane foam matrix used to absorb electromagnetic wave structure.Through the analysis on property parameters of the polyurethane foam matrix, combined with application requirements and pre-test results of product, the appropriate aging performance characterization index was determined. Through variance analysis of aging test results under various environmental stress conditions, the main accelerated aging environmental stress was determined. According to the pre-test and analysis, the aging resistance of polyurethane foam matrix can be characterized by elongation at break. Because waterproof film can well block the influence of water vapor on polyurethane foam matrix, the aging performance can be assessed by applying single temperature stress. For polyurethane foam matrix used for absorbing structure with waterproof coating, the change of elongation at break under single temperature stress can effectively evaluate its aging resistance. |
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