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Research and Development of High-performance Explosives
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Internal Explosion Performance of RDX@Nano-B Composite Explosives.

Peng Xi1,2, Shiyan Sun1, Yu Shang2

  • 1College of Weaponry Engineering, Naval University of Engineering, Wuhan 430033, China.

Nanomaterials (Basel, Switzerland)
|February 11, 2023
PubMed
Summary

Researchers enhanced metalized explosives by adding RDX and nano-boron composites. This RDX@Nano-B formulation significantly boosted detonation heat and explosion pressure, offering a new path for high-energy explosive design.

Keywords:
boron nano-powderboron-containing compositesinternal explosion performancemetalized explosives

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Energetic Materials

Background:

  • Boron powder is a promising additive for metalized explosives.
  • Improving the energy release of boron-containing explosives is crucial for advanced applications.

Purpose of the Study:

  • To prepare and characterize RDX and nano-boron composites (RDX@Nano-B).
  • To design and evaluate metalized explosives (PBX-B1) using these composites.
  • To investigate the impact of microstructure design on explosive performance.

Main Methods:

  • Spray-drying process for RDX@Nano-B composite preparation.
  • Internal explosion test for measuring detonation heat and explosion pressure under vacuum and air.
  • Comparative analysis of PBX-B1 with a reference formulation (PBX-B2).

Main Results:

  • PBX-B1 exhibited a 34.8% increase in detonation heat (7456 J/g) compared to RDX in a vacuum.
  • Detonation heat increased by 19.2% in air; peak pressure rose by 155% and equilibrium pressure by 75% compared to vacuum.
  • PBX-B1 showed a 49.8% increase in aerobic combustion energy release and a 10.5% increase in equilibrium pressure compared to PBX-B2.

Conclusions:

  • Microstructure design of boron-containing metalized explosives significantly enhances energy release.
  • RDX@Nano-B composites offer a viable strategy for developing higher-energy metalized explosives.
  • The findings provide critical insights for future high-energy explosive material development.