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| Study on Accelerated Aging Performance of Al/CuO Nanothermite |
| Received:January 25, 2022 Revised:February 06, 2022 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2022.02.006 |
| KeyWord:Al/CuO nanothermite accelerated aging storage performance 71 ℃ test method formula |
| Author | Institution |
| ZHANG Tian-chang |
School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing , China;Micro-Nano Energetic Devices Key Laboratory of MIIT, Nanjing , China |
| WANG Qian |
School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing , China |
| SHEN Yun |
School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing , China;Micro-Nano Energetic Devices Key Laboratory of MIIT, Nanjing , China |
| WANG Yue-ting |
School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing , China;Micro-Nano Energetic Devices Key Laboratory of MIIT, Nanjing , China |
| LI Fu-wei |
School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing , China;Micro-Nano Energetic Devices Key Laboratory of MIIT, Nanjing , China |
| ZHANG Ze-hua |
School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing , China;Micro-Nano Energetic Devices Key Laboratory of MIIT, Nanjing , China |
| CHENG Jian |
School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing , China;Micro-Nano Energetic Devices Key Laboratory of MIIT, Nanjing , China |
| OU YANG Ke-er |
School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing , China;Micro-Nano Energetic Devices Key Laboratory of MIIT, Nanjing , China |
| SHEN Rui-qi |
School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing , China;Micro-Nano Energetic Devices Key Laboratory of MIIT, Nanjing , China |
| YE Ying-hua |
School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing , China;Micro-Nano Energetic Devices Key Laboratory of MIIT, Nanjing , China |
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| Abstract: |
| To investigate the effect of composition ratio and storage time on the performance of nAl/CuO nano-thermite, Al/CuO nanothermite with equivalent ratio of 1.0, 1.4, 1.8 was prepared by mechanical mixing method. By referring to the 71 ℃ test method of GJB 736.8—90 explosive device, accelerated aging test of Al/CuO nanothermite was carried out under the environmental conditions of 71 ℃ and 40% relative humidity. XRD, SEM, burning rate test, ignition temperature test, pressurization and combustion performance were characterized before and after accelerated aging. The results showed that the aging process led to a clear change of the morphology of the composites, but the composition did not change significantly. The flame propagation of composites with equivalent of 1.0, 1.4 could not stabilize after aging for 7 days. The ignition temperature of equivalent of 1.0, 1.4 and 1.8 decreased by 26.6%, 22.6% and 19.2% respectively, and the peak pressure decreased by 74.6%, 80.8% and 62.7%, respectively. Accelerated aging could obviously change the properties of Al/CuO nanothermite. The appropriate increase of equivalent ratio is beneficial to increase the storage stability of Al/CuO nanothermite. With the increase of storage time, the performance finally tends to be stable. |
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