Unique thermal and combustion behaviors of composite propellants containing a high-energy insensitive nitropyrimidine derivative

Meng, Ke-Juan; Zhang, Haorui; Wang, Shuaizhong; Wang, Yi; Zhang, Qinghua; Yan, Qi‐Long

doi:10.1016/j.combustflame.2021.111855

Cited by 9 publications

(2 citation statements)

References 12 publications

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“…From the DSC curve, two endothermic peaks can be found in the first stage. One is the decomposition endothermic peak of AlH 3 near 190 °C, and the other is the obvious endothermic peak near 249.5 °C, which is the process of AP with the orthorhombic crystal transforming into the cubic crystal …”

Section: Resultsmentioning

confidence: 99%

High-Energy Composite Fuels with Improved Combustion Efficiency by Using AlH₃ Embedded with Al Particles

Yu,

Xu,

Xie

et al. 2023

ACS Appl. Mater. Interfaces

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Aluminum hydride (AlH3) has attracted much attention due to its potential to replace aluminum (Al) as a novel energetic material in solid propellants. In this research, ammonium perchlorate (AP) and perfluoropolyether (PFPE) as functionalized coatings and a combination of acoustic resonance and spray drying technology have been employed to prepare AlH3@Al@AP (AHAPs) and AlH3@Al@AP@PFPE (AHAPs-F) energetic composite particles. The formulations of composite propellants and modified AlH3 particles were designed and fabricated. Their thermal reactivity, reaction heat, density, vacuum stability, combustion performance, and condensed combustion products (CCPs) have been systematically investigated. The results show that the solid propellants containing AHAPs (SP13) and AHAPs-F (SP14) composites can significantly enhance the reactivity and energy output compared to conventional solid propellants with the mechanical mixture Al/AlH3 (SP12). In particular, the total heat releases of SP13 and SP14 are almost 1.2 and 1.7 times higher than those of conventional ones (SP12, 1442 J g–1), respectively. Among the AlH3-based propellants, SP14 propellants exhibit the highest reaction heat of 5887 J g–1, the most intensive flame radiation of 31.4 × 103, and the highest combustion wave temperature of 2495 °C. Moreover, the particle size distribution of CCPs from SP14 propellants is much narrower and smaller than that of SP12, resulting in higher combustion efficiency.

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Section: Resultsmentioning

confidence: 99%

High-Energy Composite Fuels with Improved Combustion Efficiency by Using AlH₃ Embedded with Al Particles

Yu,

Xu,

Xie

et al. 2023

ACS Appl. Mater. Interfaces

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“…As shown in Figure 8, the characteristic emission spectrum of AlO with the most intensive peak was at 486 nm. 43,44 The flame maximum intensity of AlH 3 @PFPE and AHFPs-10% and -50% were increased to 10.3 × 10 3 , 9.5 × 10 3 , and 14.8 × 10 3 , respectively. In particular, the AlO intensity of AHFPs-30% shows a significant improvement from 2.8 × 10 3 to 21.6 × 10 3 , which is almost 7.71 times that of pure AlH 3 .…”

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confidence: 97%

Stabilization of AlH₃ Crystals by the Coating of Hydrophobic PFPE and Resulted Reactivity with Ammonium Perchlorate

Yang

Xie³

et al. 2023

Langmuir

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Aluminum hydride (AlH 3 ) is a promising fuel component of solid propellant, but its stabilization is still challenging. Herein, surface functionalization of hydrophobic perfluoropolyether (PFPE) followed by ammonium perchlorate (AP) coating has been implemented. In particular, AlH 3 @PFPE@xAP (x = 10, 30, 50, or 64.21%) composites (AHFPs) were prepared by a spraydrying technique. The PFPE-functionalized AlH 3 with a hydrophobic surface shows an increased water contact angle (WCA) from 51.87°to 113.54°. Compared with pure AlH 3 , the initial decomposition temperatures of AHFPs were increased by 17 °C, and the decomposition properties of AP in the AHFPs were also enhanced with significantly decreased peak temperature and fairly increased energy output. Moreover, the decomposition induction time of AHFPs-30% was improved by almost 1.82 times that of raw AlH 3 , which indicates that the coatings of PFPE and AP could improve the stability of AlH 3 . The maximum flame radiation intensity of AHFPs-30% was 21.6 × 10 3 , which is almost 7.71 times that of pure AlH 3 (2.8 × 10 3 ).

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Assembling of energetic and biocidal moieties via C-N cross coupling reactions for gas-driven biocidal materials

Zhao,

Zhang,

Chen

et al. 2024

Chemical Engineering Journal

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Unique thermal and combustion behaviors of composite propellants containing a high-energy insensitive nitropyrimidine derivative

Cited by 9 publications

References 12 publications

High-Energy Composite Fuels with Improved Combustion Efficiency by Using AlH₃ Embedded with Al Particles

High-Energy Composite Fuels with Improved Combustion Efficiency by Using AlH₃ Embedded with Al Particles

Stabilization of AlH₃ Crystals by the Coating of Hydrophobic PFPE and Resulted Reactivity with Ammonium Perchlorate

Assembling of energetic and biocidal moieties via C-N cross coupling reactions for gas-driven biocidal materials

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Unique thermal and combustion behaviors of composite propellants containing a high-energy insensitive nitropyrimidine derivative

Cited by 9 publications

References 12 publications

High-Energy Composite Fuels with Improved Combustion Efficiency by Using AlH3 Embedded with Al Particles

High-Energy Composite Fuels with Improved Combustion Efficiency by Using AlH3 Embedded with Al Particles

Stabilization of AlH3 Crystals by the Coating of Hydrophobic PFPE and Resulted Reactivity with Ammonium Perchlorate

Assembling of energetic and biocidal moieties via C-N cross coupling reactions for gas-driven biocidal materials

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Product

Resources

About

High-Energy Composite Fuels with Improved Combustion Efficiency by Using AlH₃ Embedded with Al Particles

High-Energy Composite Fuels with Improved Combustion Efficiency by Using AlH₃ Embedded with Al Particles

Stabilization of AlH₃ Crystals by the Coating of Hydrophobic PFPE and Resulted Reactivity with Ammonium Perchlorate