Thermal behavior of ammonium dinitramide and amine nitrate mixtures

Matsunaga, Hiroki; Katoh, K.; Habu, Hiroto; Noda, Minoru; Miyake, Akira

doi:10.1007/s10973-018-7875-6

Cited by 12 publications

(13 citation statements)

References 38 publications

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“…The Q 1st of AMU631 was especially high. Previous studies related to thermal analysis of pure ADN [22][23][24][25][26][27][28] and mixtures of ADN and amine nitrates 12,17) reported that the exothermic reactions from thermal decomposition of ADN and the reaction between ADN and MMAN occurred in this temperature range. The difference in Q 1st values is thought to Table 2.…”

Section: Thermal Behavior Of Adn-based Eils 331 Sc-dscmentioning

confidence: 98%

“…The temperature increase was caused not only by heat from the hotplate but also by an exothermic reaction in the condensed phase, as suggested in previous studies in which the thermal decomposition of ADN and the reaction between ADN and MMAN have been reported to proceed exothermically. 17,[22][23][24][25][26][27][28] In Fig. 8, the temperature profile of AM55 is included for comparison.…”

Section: Temperature Requirement For Adn-based Eil Ignitionmentioning

confidence: 99%

“…Consequently, we have been investigating these mixtures as energetic ionic liquid propellants (EILPs). [10][11][12][15][16][17] The use of ADN-based EILPs in spacecraft necessitates the development of a specialized ignition system because of their unique properties. Because energetic ionic liquids (EILs) comprise only fuel and an oxidizer (without a solvent), the combustion temperature is presumed to be very high.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ignition of the Droplets of Ammonium Dinitramide-Based High-Energy Ionic Liquid

Matsunaga

Katoh

Habu

et al. 2020

AEROSPACE TECHNOLOGY JAPAN

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Mixtures of ammonium dinitramide (ADN), monomethylamine nitrate (MMAN), and urea form stable ADN-based energetic ionic liquids (EILs), even below room temperature. These mixtures, referred to as EIL propellants, can be highly energetic and yet are easy to handle. This study focuses on the ignition of ADN-based EILs in a thermal apparatus. We consequently ignited ADN-based EIL droplets within 590 ms using 2 W of the continuous-wave laser. The results suggest that laser ignition is a feasible new ignition system for thrusters. The condensed-phase reaction of the ADN-based EILs started immediately after heating, and gases evolved from the reaction ignited when the droplet temperature reached approximately 400°C. Thermal analyses indicated that the amount of heat generated by the condensed-phase reaction of the EILs affected their ignitability. The analysis of the evolved gases indicated that methyl nitrate gas generated from the condensed-phase reaction of MMAN ignited first, followed by the ignition of other gases because of heat from the flame of the methyl nitrate. These results clarify the ignition requirement of ADN-based EILs and should be useful in the design of new EIL compositions.

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Section: Thermal Behavior Of Adn-based Eils 331 Sc-dscmentioning

confidence: 98%

Section: Temperature Requirement For Adn-based Eil Ignitionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ignition of the Droplets of Ammonium Dinitramide-Based High-Energy Ionic Liquid

Matsunaga

Katoh

Habu

et al. 2020

AEROSPACE TECHNOLOGY JAPAN

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“…Matsunaga et al [6][7][8][9] previously reported that ternary mixtures of ADN, MMAN and urea have very low melting points (below -30 °C) and thus have potential as alternatives to hydrazine mono-propellants. Chemical equilibrium computations predict that the performance of these ADN-based propellants will also be superior to that of hydrazine.…”

Section: Introductionmentioning

confidence: 99%

“…For these reasons, TG-MS and TG-IR studies have been widely conducted to investigate the reaction mechanisms of various energetic materials, including ADN and its mixtures [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. Matsunaga et al [6,7,9] conducted a thermal analysis of ADN/MMAN/urea mixtures using differential scanning calorimetry (DSC), thermogravimetry-differential thermal analysis-infrared spectroscopy (TG-DTA-IR) and mass spectrometry (MS) and demonstrated that these materials decompose to generate various gases, including nitrous oxide (N2O), nitrogen dioxide (NO2), isocyanic aid (HNCO), ammonia (NH3), carbon dioxide (CO2) and water (H2O).…”

Section: Introductionmentioning

confidence: 99%

Thermal and evolved gas analyses of decomposition of ammonium dinitramide-based ionic liquid propellant using TG–DSC–HRTOFMS

Izato

Shiota

Satoh³

et al. 2019

J Therm Anal Calorim

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Thermal and evolved gas analyses were carried out to assess the decomposition of an ionic liquid propellant consisting of ammonium dinitramide (ADN), methylammonium nitrate (MMAN) and urea, using thermogravimetry-differential scanning calorimetry-high resolution time of flight mass spectrometry (TG-DSC-HRTOFMS). This technique simultaneously assesses the thermal and evolved gas behavior and is able to distinguish between products having similar massto-charge ratios, based on accurate mass determinations. ADN/MMAN and ADN/MMAN/urea mixtures were found to decompose to form NH3, H2O, HCN, CO, N2, CH2O, CH3NH2, HNCO, CO2, N2O and HNO3, and possible reaction schemes for the decomposition processes were developed. Interactions between ADN and MMAN appear to enhance the generation of N2, while the presence of urea reduces the net exothermic heat of reaction due to the endothermic pyrolysis reaction of urea to NH3 and HNCO, followed by the reaction HNCO + H2O → NH3 + CO2.

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