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  • 1 Research Center of Laser Fusion, CAEP, P. O. Box 919-987, Mianyang 621900, China
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Abstract

Thermal behavior of KClO4/Mg pyrotechnic mixtures heated in air was investigated by thermal analysis. Effects of oxygen balance and heating rates on the TG–DSC curves of mixtures were examined. Results showed that DSC curves of the mixtures had two exothermic processes when heated from room temperature to 700 °C, and TG curve exhibited a slight mass gain followed by a two-stage mass fall and then a significant mass increase. The exothermic peak at lower temperature and higher temperature corresponded to the ignition process and afterburning process, respectively. Under the heating rate of 10 °C min−1, the peak temperatures for ignition and afterburning process of stoichiometric KClO4/Mg (58.8/41.2) was 543 and 615 °C, respectively. When Mg content increased to 50%, the peak ignition temperature decreased to 530 °C, but the second exothermic peak changed little. Reaction kinetics of the two exothermic processes for the stoichiometric mixture was calculated using Kissinger method. Apparent activation energies for ignition and afterburning process were 153.6 and 289.5 kJ mol−1, respectively. A five-step reaction pathway was proposed for the ignition process in air, and activation energies for each step were also calculated. These results should provide reference for formula design and safety storage of KClO4/Mg-containing pyrotechnics.

  • 1. Conkling, JA 1985 Chemistry of pyrotechnics: basic principles and theory Marcel Dekker Inc. New York.

  • 2. Hosseini, SG, Eslami, A 2010 Thermoanalytical investigation of relative reactivity of some nitrate oxidants in tin-fueled pyrotechnic systems. J Therm Anal Calorim 101:11111119 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 3. Hosseini, SG, Pourmortazavi, SM, Hajimirsadeghi, SS 2005 Thermal decomposition of pyrotechnic mixtures containing sucrose with either potassium chlorate or potassium perchlorate. Combust Flame 141:322326 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 4. Lee, JS, Hsu, CK 2001 The DSC studies on the phase transition, decomposition and melting of potassium perchlorate with additives. Thermochim Acta 367–368:367370 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 5. Barišin, D, Haberle, IB 1989 Aging of pyrotechnic compositions. The investigation of chemical changes by IR spectroscopy and x-ray diffraction. Propellant Explos Pyrotech 14:162169 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 6. Tuukkanen, IM, Charsley, EL, Laye, PG, Rooney, JJ, Griffiths, TT, Lemmetyinen, H 2006 Pyrotechnic and thermal studies on the magnesium-strontium nitrate pyrotechnic system. Propellant Explos Pyrotech 31:110115 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 7. Tuukkanen, IM, Brown, SD, Charsle, EL, Goodall, SJ, Rooney, JJ, Griffith, TT, Lemmetyinen, H 2004 Studies on the ageing of a magnesium-strontium nitrate pyrotechnic composition using isothermal microcalorimetry and thermal analysis techniques. Thermochim Acta 417:223229 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 8. Knowlton GD , Ludwig CP. Low temperature autoignition composition. US Patent, 6479702, 2004.

  • 9. Krone U . Pyrotechnical mixture for producing a smoke screen. US Patent, 4968365, 1990.

  • 10. Salzano E , Basco A, Cammarota F. Confined after-burning of display pyrotechnics and explosives. In: 32nd Combustion meeting, Napoli (IT), 2009.

    • Search Google Scholar
    • Export Citation
  • 11. Donhaue L , Pegg MJ, Zhang F. Afterburning of TNT detonation products in air. In: Seventh international symposium on hazards, prevention, and mitigation of industrial explosives (7th ISGHPMIE). St. Petersburg, Russia, 2008.

    • Search Google Scholar
    • Export Citation
  • 12. Basco, A, Salzano, E 2010 The risk of storage plant of pyrotechnics. Chem Eng Trans. 19:231236.

  • 13. Pourmortazavi, SM, Fathollahi, M, Hajimirsadeghi, SS, Hosseini, SG 2006 Thermal behavior of aluminum powder and potassium perchlorate mixtures by DTA and TG. Thermochim Acta. 443:129131 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 14. Sharma, TP, Varshney, VS, Kumar, S 1992 Products of combustion of the metal powders. Fire Sci Technol. 12:2938 .

  • 15. Ravindran, N, Chattopadhyay, DK, Zakula, A, Battocchi, D, Webster, DC, Bierwagen, GP 2010 Thermal stability of magnesium-rich primers based on glycidyl carbamate resins. Polym Degrad Stab 95:11601166 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 16. Pourmortazavi, SM, Hajimirsadeghi, SS, Kohsari, I, Fathollahi, M, Hosseini, SG 2008 Thermal decomposition of pyrotechnic mixtures containing either aluminum or magnesium powder as fuel. Fuel. 87:244251 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 17. Kissinger, HE 1957 Reaction kinetics in differential thermal analysis. Anal Chem 29:17021706 .

  • 18. Barral, L, Cano, J, Lopez, J, Lopez-Bueno, I, Nogueira, P, Ramirez, C. et al. 1998 Thermogravimetric study of tetrafunctional/phenol novolac epoxy mixtures cured with a diamine. J Therm Anal Calorim 51:489501.

    • Search Google Scholar
    • Export Citation
  • 19. Chrissafis, K 2009 Kinetics of thermal degradation of polymers-Complementary use of isoconversional and model-fitting methods. J Therm Anal Calorim 95:273283 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 20. Gao, M, Wu, W, Yan, Y 2009 Thermal degradation and flame retardancy of epoxy resins containing intumescent flame retardant. J Therm Anal Calorim 95:605608 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 21. Tiptipakorn, S, Damrongsakkul, S, Ando, S, Hemvichian, K, Rimdusit, S 2007 Thermal degradation behaviors of polybenzoxazine and silicon-containing polyimide blends. Polym Degrad Stab 92:12651278 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 22. Boey, FYC, Qiang, W 2000 Experimental modeling of the cure kinetics of an epoxy-hexaanhydro-4-methylphthalicanhydride (MHHPA) system. Polymer 41:20812094 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 23. Ozawa, T 1970 Kinetic analysis of derivative curves in thermal analysis. J Therm Anal Calorim 2:301324 .

  • 24. Flynn, JH, Wall, LA 1966 A quick, direct method for the determination of activation energy from thermogravimetric data. J Appl Polym Sci B. 4–5:323328 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 25. Shih TS , Wang JH, Chong KZ. Combustion of magnesium alloys in air. Mater Chem Phys. 2004; 2-3: 3029.

  • 26. Tribelhorn, MJ, Venables, DS, Brown, ME 1995 Combustion of some zinc-fuelled binary pyrotechnic systems. Thermochim Acta. 256:309324 .

  • 27. Lee, JS, Hsu, CK 2001 The effect of different zirconium on thermal behaviors for Zr/KClO4 priming composition. Thermochim Acta. 367–368:375379 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 28. Solymosi F . Structure and stability of salts of halogen oxyacids in the solid phase. New York: Wiley; 1977.

  • 29. Mclain JH . Pyrotechnics from the viewpoint of solid state chemistry. Philadelphia: Franklin Institute; 1980, p. 20.

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  • Impact Factor (2019): 2.731
  • Scimago Journal Rank (2019): 0.415
  • SJR Hirsch-Index (2019): 87
  • SJR Quartile Score (2019): Q3 Condensed Matter Physics
  • SJR Quartile Score (2019): Q3 Physical and Theoretical Chemistry
  • Impact Factor (2018): 2.471
  • Scimago Journal Rank (2018): 0.634
  • SJR Hirsch-Index (2018): 78
  • SJR Quartile Score (2018): Q2 Condensed Matter Physics
  • SJR Quartile Score (2018): Q2 Physical and Theoretical Chemistry

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
4
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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