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Preparation and Reactivity of Gasless Nanostructured Energetic Materials
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Assembling Hybrid Energetic Materials with Controllable Interfacial Microstructures by Electrospray.

Lihong Chen1,2,3, Chengbo Ru2,3, Hongguo Zhang2,3

  • 1Fire & Explosion Protection Laboratory, Northeastern University, Shenyang 110819, China.

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This summary is machine-generated.

Researchers created hybrid energetic materials (HEMs) by combining nanothermites and explosives. They found that controlling the material

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Area of Science:

  • Energetic Materials Science
  • Materials Chemistry
  • Nanotechnology

Background:

  • Hybrid energetic materials (HEMs) offer tunable reactivity.
  • Interfacial microstructures significantly influence HEM performance.
  • Controlling morphology is key to optimizing energy release.

Purpose of the Study:

  • To investigate the impact of interfacial microstructures on HEM reactivity.
  • To explore electrospray as a method for assembling HEMs.
  • To correlate HEM morphology with combustion and pressurization characteristics.

Main Methods:

  • Electrospray assembly of Al/CuO nanothermite and CL-20 explosive.
  • Morphological and compositional analysis using SEM and EDS.
  • Phase transition analysis via FTIR.
  • Thermodynamic behavior investigation using TG-DSC.
  • Performance evaluation through open burn and pressure cell tests.

Main Results:

  • Electrospray produced HEMs with varying morphologies (clay-like, granular) based on solvent systems.
  • Granular HEMs exhibited high gas generation and pressurization rates.
  • Clay-like HEMs with nitrocellulose fibers showed reduced reactivity.
  • HEMs with independent CL-20 particles offered high gas generation but lower pressurization.

Conclusions:

  • Interfacial microstructure design via electrospray effectively regulates HEM energy release.
  • Morphology control allows tailoring HEM performance for specific applications.
  • Electrospray is a versatile technique for fabricating advanced energetic composites.