Hot Bridge-Wire Ignition of Nanocomposite Aluminum Thermite Synthesized Using Sol-Gel-Derived Aerogel with Tailored Properties for Enhanced Reactivity and Reduced Sensitivity

被引:2
作者
Ghedjatti, Ilyes [1 ]
Yuan, Shiwei [1 ]
Wang, Haixing [1 ]
机构
[1] Beihang Univ, Sch Astronaut, Aerosp Prop Lab, Beijing 100191, Peoples R China
关键词
sol-gel method; aerogel-based nano-thermite; secondary oxidizer; dispersant; hot bridge-wire; ignition efficiency; combustion performance; reaction kinetics; sensitivity thresholds; NANO-ALUMINUM; COMBUSTION CHARACTERISTICS; MOLECULAR-DYNAMICS; PARTICLES; BEHAVIOR; NANOTHERMITES; TEMPERATURE; AL/CUO; PROPAGATION; SIZE;
D O I
10.3390/en17102437
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The development of nano-energetic materials has significantly advanced, leading to enhanced properties and novel applications in areas such as aerospace, defense, energy storage, and automobile. This research aims to engineer multi-dimensional nano-energetic material systems with precise control over energy release rates, spatial distribution, and temporal and pressure history. In this context, sol-gel processing has been explored for the manufacture of nanocomposite aluminum thermites using aerogels. The goal is to produce nano-thermites (Al/Fe2O3) with fast energy release rates that are insensitive to unintended initiation while demonstrating the potential of sol-gel-derived aerogels in terms of versatility, tailored properties, and compatibility. The findings provide insightful conclusions on the influence of factors such as secondary oxidizers (KClO3) and dispersants (n-hexane and acetone) on the reaction kinetics and the sensitivity, playing crucial roles in determining reactivity and combustion performance. In tandem, ignition systems contribute significantly in terms of a high degree of reliability and speed. However, the advantages of using nano-thermites combined with hot bridge-wire systems in terms of ignition and combustion efficiency for potential, practical applications are not well-documented in the literature. Thus, this research also highlights the practicality along with safety and simplicity of use, making nano-Al/Fe2O3-KClO3 in combination with hot bridge-wire ignition a suitable choice for experimental purposes and beyond.
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页数:37
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