Effects of Al powder on the reaction process and reactivity of B/KNO3 energetic sticks

Li, Chen-yang; Li, Min-jie; Song, Hao-yu; Xu, Chuan-hao; Gao, Lei; Ye, Bao-yun; Wang, Jing-yu; An, Chong-wei

doi:10.1016/j.enmf.2023.10.004

Energetic Materials Frontiers

2023

DOI: 10.1016/j.enmf.2023.10.004

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Effects of Al powder on the reaction process and reactivity of B/KNO3 energetic sticks

Chen-yang Li,

Min-jie Li,

Hao-yu Song

et al.

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2024

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Cited by 5 publications

References 58 publications

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Engineering High‐Performance Hypergolic Propellant by Synergistic Contribution of Metal–Organic Framework Shell and Aluminum Core

Wang,

Li,

Duan

et al. 2024

Small

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Hypergolicity is a highly desired characteristic for hybrid rocket engine‐based fuels because it eliminates the need for a separate ignition system. Introducing hypergolic additives into conventional fuels through physical mixing is a feasible approach, but achieving highly reliable hypergolic ignition and energy release remains a major challenge. Here, the construction of core–shell Al@metal organic framework (MOF) heterostructures is reported as high‐performance solid hypergolic propellants. Upon contact with the liquid oxidizer the uniformly distributed hypergolic MOF (Ag‐MOF) shell can induce the ignition of hypergolic‐inert fuel Al, resulting in Al combustion. Such a synthetic strategy is demonstrated to be favorable in hotspot generation and heat transfer relative to a simple physical mixture of Al/Ag‐MOF, thus producing shorter ignition delay times and more efficient combustion. Thermal reactivity study indicated that the functionalization of the Ag‐MOF shell changes the energy release process of the inner Al, which is accompanied by a thermite reaction. The synergistic effect of implantation of hypergolic MOF and high energy Al contributes to high specific impulses of 230–270 s over a wide range of oxidizer‐to‐fuel ratios.

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Engineering High‐Performance Hypergolic Propellant by Synergistic Contribution of Metal–Organic Framework Shell and Aluminum Core

Wang,

Li,

Duan

et al. 2024

Small

View full text Add to dashboard Cite

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In situ self-crosslinking binder system − enhances the mechanical performance gain of composite energetic materials

Han,

Li,

Tan

et al. 2024

Chemical Engineering Journal

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Energy release behavior of Zr/B/KNO3 dual-fuel energetic composites: Powders and sticks

Li,

Xu,

Song

et al. 2024

Fuel

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Effects of Al powder on the reaction process and reactivity of B/KNO3 energetic sticks

Cited by 5 publications

References 58 publications

Engineering High‐Performance Hypergolic Propellant by Synergistic Contribution of Metal–Organic Framework Shell and Aluminum Core

Engineering High‐Performance Hypergolic Propellant by Synergistic Contribution of Metal–Organic Framework Shell and Aluminum Core

In situ self-crosslinking binder system − enhances the mechanical performance gain of composite energetic materials

Energy release behavior of Zr/B/KNO3 dual-fuel energetic composites: Powders and sticks

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