CHINESE JOURNAL OF ENERGETIC MATERIALS
+Advanced Search

Preparation of Micron-scale DAP-4-based Energetic Composite Microspheres by Microfluidic Technology and its Characterization
Author:
Affiliation:

School of Environmental and Safety Engineering,North University of Chinay, Taiyuan 030051, China

Fund Project:

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
    Abstract:

    To improve the safety of the charging process of molecular perovskite energetic material (DAP-4), spherical granulation of DAP-4-based energetic composite microspheres was realized by altering the composite ratio of the bonding agents, Glycidyl Azide Polymer (GAP) and nitrocellulose (NC) (constituting 2% of the mass of DAP-4) using the coaxial droplet microfluidic technology. The macro and micro morphology, crystal structure, thermal properties, combustion properties, and mechanical sensitivity of the samples were tested and analyzed by scanning electron microscope, X-ray diffractometer, differential thermal scanning calorimeter, thermogravimetric analyzer, high-speed photography, impact sensitivity tester and friction sensitivity tester. The results indicate that DAP-4 has the best sphericity when the ratio of GAP to NC is 4∶1. The crystal structure of DAP-4 is not changed after spheroidizing granulation, and the peak temperature of thermal decomposition is slightly advanced. The combustion time of DAP-4 microspheres is slightly longer than that of raw materials, overall with a very stable continuous combustion, retaining its excellent combustion performance. The GN41 microspheres can significantly improve fluidity while reducing mechanical sensitivity and improving the safety of the charging process.

    Reference
    Related
    Cited by
Article Metrics
  • PDF:
  • HTML:
  • Abstract:
  • Cited by:
Get Citation

李佳伟,李佳飞,张东旭,等.微流控技术制备微米级DAP-4基含能复合微球及性能研究[J].含能材料,2024,32(3):249-255.
LI Jia-wei, LI Jia-fei, ZHANG Dong-xu, et al. Preparation of Micron-scale DAP-4-based Energetic Composite Microspheres by Microfluidic Technology and its Characterization[J]. Chinese Journal of Energetic Materials,2024,32(3):249-255.

Cope
History
  • Received:December 15,2023
  • Revised:January 30,2024
  • Adopted:January 29,2024
  • Online: January 30,2024
  • Published: March 25,2024