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  • 1 School of Chemical Engineering/Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi'an 710069, Shaanxi, China
  • 2 School of Chemistry and Chemical Engineering, Yulin University, Yulin 719000, Shaanxi, China
  • 3 Department of Conservation Technology, The Palace Museum, Beijing 100009, China
  • 4 Science and Technology on Combustion and Explosion Laboratory, Xi'an Modern Chemistry Research Institute, Xi'an 710065, Shaanxi, China
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Abstract

As N-2′,4′-dinitrophenyl-3,3-dinitroazetidine (DNPDNAZ) is an important derivative of 3,3-dinitroazetidine, its thermal behavior was studied under 0.1 and 2 MPa by the differential scanning calorimetry (DSC) method. The results of this study show that there are one melting process and two exothermic decomposition processes. Its kinetic parameters of the intense exothermic decomposition process were obtained from the analysis of the DSC curves. The activation energy and the mechanism function under 0.1 MPa are 167.26 kJ mol−1 and f(α) = 3(1 + α)2/3[(1 + α)1/3− 1]−1/2, respectively, and the said parameters under 2 MPa are 169.30 kJ mol−1 and f(α) = 3(1 + α)2/3[(1 + α)1/3− 1]−1/2, respectively. The specific heat capacity of DNPDNAZ was determined using a continuous Cp mode of micro-calorimeter. Using the relationship between Cp and T with the thermal decomposition parameters, the time of the thermal decomposition from initialization to thermal explosion (adiabatic time-to-explosion, tTIAD), the self-accelerating decomposition temperature (TSADT), thermal ignition temperature (TTIT), critical temperatures of thermal explosion (Tb), and half-life (t1/2) were obtained to evaluate its thermal safety under different pressures.

  • 1.

    Archibald, TG, Gilardi, R, Baum, K, George, C. 1990. Synthesis and X-ray crystal structure of 1,3,3-trinitroazetidine. J Org Chem. 55:29202924 .

  • 2.

    Hiskey, MA, Coburn, MD, Mitchell, MA, Benicewicz, BC. 1992. Synthesis of 3,3-dinitroazetidine from 1-t-butyl-3,3-dinitroazetidine. J Heterocycl Chem. 29:18551856 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 3.

    Hiskey, MA, Stincipher, MM, Brown, JE. 1993. Synthesis and initial characterization of some energetic salts of 3,3-dinitroazetidine. J Energy Mater. 11:157165 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 4.

    Ma, HX, Yan, B, Li, ZN, Guan, YL, Song, JR, Xu, KZ, Hu, RZ. 2009. Preparation, non-isothermal decomposition kinetics, heat capacity and adiabatic time-to-explosion of NTO·DNAZ. J Hazard Mater. 169:10681073 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 5.

    Ma, HX, Yan, B, Li, ZN, Song, JR, Hu, RZ. 2009. Synthesis, molecular structure, non-isothermal decomposition kinetics and adiabatic time to explosion of 3, 3-dinitroazetidinium 3,5-dinitrosalicylate. J Therm Anal Calorim. 95:437444 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 6.

    Ma, HX, Yan, B, Li, JF, Ren, YH, Chen, YS, Zhao, FQ, Song, JR, Hu, RZ. 2010. Molecular structure, thermal behavior and adiabatic time-to-explosion of 3,3-dinitroazetidinium picrate. J Mol Struc. 981:103110 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 7.

    Ma, HX, Yan, B, Ren, YH, Guan, YL, Zhao, FQ, Song, JR, Hu, RZ. 2011. Thermal behavior and thermal safety on 3,3-dinitroazetidinium salt of perchloric acid. J Therm Anal Calorim. 103:569575 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 8.

    Yan, B, Ma, HX, Hu, Y, Guan, YL, Song, JR. 2009. 1-(2,4-Dinitrophenyl)-3,3-dinitroazetidine. Acta Crystallogr E. 65:o3215 .

  • 9.

    Yan, B, Ma, HX, Li, JF, Guan, YL, Song, JR. 2010. 1-Benzoyl-3,3-dinitroazetidine. Acta Crystallogr E. 66:o57 .

  • 10.

    Ma, HX, Song, JR, Zhao, FQ, Hu, RZ, Xiao, HM. 2007. Nonisothermal reaction kinetics and computational studies on the properties of 2,4,6,8-tetranitro-2,4,6,8-tetraazabicyclo [3,3,1] onan-3,7-dione (TNPDU). J Phys Chem A. 111:86428649 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 11.

    Zhang, TL, Hu, RZ, Xie, Y, Li, FP. 1994. The estimation of the critical temperature of thermal explosion for energetic materials using non-isothermal DSC. Thermochim Acta. 244:171176 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 12.

    Wang, QF, Wang, L, Zhang, XW, Mi, ZT. 2009. Thermal stability and kinetic of decomposition of nitrated HTPB. J Hazard Mater. 172:16591664 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 13.

    Smith, LC. 1975. An approximate solution of the adiabatic explosion problem. Thermochim Acta. 13:16 .

  • 14.

    Hu, RZ, Zhang, H, Xia, ZM, Guo, PJ, Gao, SL, Shi, QZ, Lu, GE, Jiang, JY. 2003. Estimation formulae of the critical rate of temperature rise for thermal explosion of exothermic decomposition reaction system of energetic materials. Chin J Energy Mater. 11:130133 (in Chinese).

    • Search Google Scholar
    • Export Citation
  • 15.

    Zhao, HA, Hu, RZ, Wang, XJ, Zhao, FQ, Gao, HX, Zhang, H, Zhang, XL, Feng, Y, Ma, HX. 2009. Thermal safety of 1,3,3-trinitroazetidine (TNAZ). Acta Chim Sinica. 67:25362540 (in Chinese).

    • Search Google Scholar
    • Export Citation

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