Safety and combustion properties of RbNO3 infrared pyrotechnic composition

Yan Ling Miao, Xiao Jing Qiao*, Qiang Zhang, Zun Ning Zhou

*Corresponding author for this work

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Abstract

The combustion properties of RbNO3 infrared pyrotechnic composition comprising RbNO3 as oxidation agent, hexafluoropropenevinylidenfluoride-copolymer(FPM) as binding agent and Mg, Al3Mg4, Ti, TiH2 and B as combustion agent, respectively were studied. DSC was used to analyse the decomposition process of the pyrotechnic composition.The combustion heat and flame temperature were measured and then compared with the results calculated by REAL method. The ingrared radiation intensity of 0.7~1.1 μm and visible light intensity of 0.4~0.7 μm were measured. Results show that the decomposition process of B/RbNO3/FPM and TiH2/RbNO3/FPM pyrotechnic composition is the same. The value of combustion heat of Mg/RbNO3/FPM pyrotechnic composition is the highest which is 4939 kJ·kg-1, and then the order is Mg>Al3Mg4>TiH2>Ti>B. The flame temperature of Ti/RbNO3/FPM is the highest which is over 2700°C and the measured flame temperatures are lower than those of calculation by REAL method. The Ti/RbNO3/FPM ratio of infrared radiation intensity of 0.7~1.1 μm and visible light intensity is 1.654 which is much higher so that TiH2/PTFE/FPM can be used as good infrared illuminating composition.

Original languageEnglish
Pages (from-to)739-743
Number of pages5
JournalHanneng Cailiao/Chinese Journal of Energetic Materials
Volume20
Issue number6
DOIs
Publication statusPublished - Dec 2012

Keywords

  • Burning rate
  • Flame temperature
  • Heat of combustion
  • Infrared radiation
  • Physical chemistry
  • RbNO

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Miao, Y. L., Qiao, X. J., Zhang, Q., & Zhou, Z. N. (2012). Safety and combustion properties of RbNO3 infrared pyrotechnic composition. Hanneng Cailiao/Chinese Journal of Energetic Materials, 20(6), 739-743. https://doi.org/10.3969/j.issn.1006-9941.2012.06.017