Experimental study on hypergolic ignition and non-ignition for dicyanamide-based ionic liquids at low impact velocity conditions
Ionic liquids have a wide engineering application foresight due to their easy and safe storage and handling while are limited by the unclear mechanism of hypergolic ignition. In this study, three dicyanamide-based ionic liquids with different cations, 1-allyl-3-methyl imidazolium ([AMIm]), 1-ethyl-3...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co. Ltd.
2021-12-01
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| Series: | Energetic Materials Frontiers |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666647221000713 |
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| author | Yang Liu Yang Guo Li-han Fei Zhao-ming Mai Cheng-long Tang Zhi Wang Ying-tao Wu Zuo-hua Huang |
| author_facet | Yang Liu Yang Guo Li-han Fei Zhao-ming Mai Cheng-long Tang Zhi Wang Ying-tao Wu Zuo-hua Huang |
| author_sort | Yang Liu |
| collection | DOAJ |
| description | Ionic liquids have a wide engineering application foresight due to their easy and safe storage and handling while are limited by the unclear mechanism of hypergolic ignition. In this study, three dicyanamide-based ionic liquids with different cations, 1-allyl-3-methyl imidazolium ([AMIm]), 1-ethyl-3-methylimidazolium ([EMIm]) and 1-butyl-3-methyl-imidazolium ([BMIm]), are prepared to react with white fuming nitric acid through drop tests. The diameter of ionic droplet is 2.2 mm, the impact velocities are controlled at 0.16/0.45/0.62/0.82/1.01 m s-1 by adjusting the dropping height, and the whole reacting process is recorded by three cameras to provide macroscopic, microscopic and infrared details. The promotion effect of impact velocity on hypergolic ignition probability is confirmed for all the ionic liquids, and the minimum impact velocity for successful hypergolic ignition of each ionic liquid was determined. The temperature evolution of hypergolic process shows a non-monotonic trend, and a four-stage process was performed to reveal the hypergolic mechanism. The experimental results indicate that short-chain alkyl and unsaturated substituents in cations are favored for hypergolic ignition, and the datasets are conducive for kinetic model construction. |
| first_indexed | 2024-04-10T18:29:06Z |
| format | Article |
| id | doaj.art-a80b669bffc5455892efb4911ef17014 |
| institution | Directory Open Access Journal |
| issn | 2666-6472 |
| language | English |
| last_indexed | 2024-04-10T18:29:06Z |
| publishDate | 2021-12-01 |
| publisher | KeAi Communications Co. Ltd. |
| record_format | Article |
| series | Energetic Materials Frontiers |
| spelling | doaj.art-a80b669bffc5455892efb4911ef170142023-02-02T04:50:10ZengKeAi Communications Co. Ltd.Energetic Materials Frontiers2666-64722021-12-0124241248Experimental study on hypergolic ignition and non-ignition for dicyanamide-based ionic liquids at low impact velocity conditionsYang Liu0Yang Guo1Li-han Fei2Zhao-ming Mai3Cheng-long Tang4Zhi Wang5Ying-tao Wu6Zuo-hua Huang7State Key Laboratory of Multiphase Flow and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, PR ChinaState Key Laboratory of Multiphase Flow and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, PR ChinaState Key Laboratory of Multiphase Flow and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, PR ChinaState Key Laboratory of Multiphase Flow and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, PR ChinaState Key Laboratory of Multiphase Flow and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, PR China; Corresponding authors.Research Center of Energetic Material Genome Science, Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621999, PR ChinaState Key Laboratory of Multiphase Flow and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, PR ChinaState Key Laboratory of Multiphase Flow and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, PR China; Corresponding authors.Ionic liquids have a wide engineering application foresight due to their easy and safe storage and handling while are limited by the unclear mechanism of hypergolic ignition. In this study, three dicyanamide-based ionic liquids with different cations, 1-allyl-3-methyl imidazolium ([AMIm]), 1-ethyl-3-methylimidazolium ([EMIm]) and 1-butyl-3-methyl-imidazolium ([BMIm]), are prepared to react with white fuming nitric acid through drop tests. The diameter of ionic droplet is 2.2 mm, the impact velocities are controlled at 0.16/0.45/0.62/0.82/1.01 m s-1 by adjusting the dropping height, and the whole reacting process is recorded by three cameras to provide macroscopic, microscopic and infrared details. The promotion effect of impact velocity on hypergolic ignition probability is confirmed for all the ionic liquids, and the minimum impact velocity for successful hypergolic ignition of each ionic liquid was determined. The temperature evolution of hypergolic process shows a non-monotonic trend, and a four-stage process was performed to reveal the hypergolic mechanism. The experimental results indicate that short-chain alkyl and unsaturated substituents in cations are favored for hypergolic ignition, and the datasets are conducive for kinetic model construction.http://www.sciencedirect.com/science/article/pii/S2666647221000713Ionic liquidDrop testHypergolic ignitionIgnition delay time |
| spellingShingle | Yang Liu Yang Guo Li-han Fei Zhao-ming Mai Cheng-long Tang Zhi Wang Ying-tao Wu Zuo-hua Huang Experimental study on hypergolic ignition and non-ignition for dicyanamide-based ionic liquids at low impact velocity conditions Energetic Materials Frontiers Ionic liquid Drop test Hypergolic ignition Ignition delay time |
| title | Experimental study on hypergolic ignition and non-ignition for dicyanamide-based ionic liquids at low impact velocity conditions |
| title_full | Experimental study on hypergolic ignition and non-ignition for dicyanamide-based ionic liquids at low impact velocity conditions |
| title_fullStr | Experimental study on hypergolic ignition and non-ignition for dicyanamide-based ionic liquids at low impact velocity conditions |
| title_full_unstemmed | Experimental study on hypergolic ignition and non-ignition for dicyanamide-based ionic liquids at low impact velocity conditions |
| title_short | Experimental study on hypergolic ignition and non-ignition for dicyanamide-based ionic liquids at low impact velocity conditions |
| title_sort | experimental study on hypergolic ignition and non ignition for dicyanamide based ionic liquids at low impact velocity conditions |
| topic | Ionic liquid Drop test Hypergolic ignition Ignition delay time |
| url | http://www.sciencedirect.com/science/article/pii/S2666647221000713 |
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