From heart drug to propellant fuels: Designing nitroglycerin-ionic liquid composite as green high-energy hypergolic fluids

Wang, Zhi; Wang, Binshen; Jin, Yunhe; Fei, Lihan; Huang, Shi; Zhang, Wenquan; Tang, Chenglong; Zhang, Qinghua

doi:10.1016/j.combustflame.2021.111597

Cited by 5 publications

(2 citation statements)

References 31 publications

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“…and Europe . In recent years, many “green propellant” candidates (mainly fuels) have been reported, including ammonium dinitramide and hydroxylammonium nitrates (as monopropellant), hydrogen peroxide (H 2 O 2 ) , and nitrous oxide (N 2 O) (as oxidizer), blends of hydrocarbon fuel and ignition source (like NaBH 4 ), , and ionic liquid. − …”

Section: Introductionmentioning

confidence: 99%

Different Ignition Modes and Temperature Evolution of Typical Hypergolic Ionic Liquids

et al. 2023

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The hypergolic ignition behaviors of three ionic liquids [BMIm]-[DCA], [EMIm][DCA], and [EMIm][CDB] reacting with white fuming nitric acid (WFNA) were investigated using the drop test approach. Two high-speed cameras with/without a long-distance microscope and a time-resolved infrared camera were used to simultaneously record the hypergolic ignition process and the reaction region temperature evolution. Results showed two distinct hypergolic ignition modes. Specifically, for [BMIm][DCA] and [EMIm][DCA], some "vapor smoke" is generated after the fuel droplet contacts the WFNA pool, followed by sudden ejection of liquids induced by microexplosion. The measured temperature in the observation window is found to first increase, then decrease, and rise again. For [EMIm][CDB], no microexplosion is observed and the temperature monotonically increases before hypergolic ignition. It is inferred that microexplosion is caused by sufficient accumulation of gaseous intermediates or products underneath the liquid surface, and the monotonic or nonmonotonic increasing temperature is a characteristic of ignition modes. A conceptual model is proposed to illustrate the two ignition modes. In addition, the droplet impact velocity (U 0 ) was varied from 1.1 to 2.1 m/s in the experiment. It is found that the vapor delay time (VDT), explosion delay time (EDT), and ignition delay time (IDT) are all reduced with U 0 by at most 50%. For a given U 0 , the three time scales decrease in the order [BMIm][DCA], [EMIm][DCA], and [EMIm][CDB] (IDT as low as 14.4 ms).

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Section: Introductionmentioning

confidence: 99%

Different Ignition Modes and Temperature Evolution of Typical Hypergolic Ionic Liquids

et al. 2023

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“…Contemporary research on nitroglycerin focuses mainly on its use for medicinal purposes [ 8 , 9 ], and work on its use as component for new energetic materials is fairly rare [ 10 ]. The sorption of nitroglycerin in polymers used to package tablets containing it [ 11 ] or in the polyvinyl chloride tubes used to administer it [ 12 ], and in nitrocellulose [ 13 ] shows that it can be trapped in certain materials for which it has an affinity.…”

Section: Introductionmentioning

confidence: 99%