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Toward understanding the aging effect of energetic materials via advanced isoconversional decomposition kinetics

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Abstract

The decomposition process of typical energetic material (EM) may consist of thousands of individual reactions as well as many intermediate species. However, one-step decomposition kinetics is routinely utilized for prediction of the shelf life of EMs. The inclusion of detailed multi-step chemistry in the kinetic mechanism can improve the reliability of the lifetime prediction. This study proposes a novel procedure for lifetime prediction of EMs, which adopts isoconversional kinetics to represent the decomposition reaction scheme. The pertinent EMs considered in the study include 97.5% cyclotrimethylene-trnitramine, 95% cyclotetramethylene-tetranitramine (HMX) and boron potassium nitrate. Differential scanning calorimetry was utilized for extracting the said isoconversional kinetics complemented by experimental validation of the proposed chemical kinetics through a comparison of the numerical lifetime predictions with accelerated aging experiment measurements.

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Acknowledgements

This work was supported by Advanced Research Center Program (NRF-2013R1A5A1073861) through the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIP) contracted through Advanced Space Propulsion Research Center at Seoul National University. Additional support was provided by the Hanwha-ADD PMD Grants contracted through IAAT and IOER at Seoul National University.

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Authors and Affiliations

  1. Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul, 151-742, Korea

    Yoocheon Kim, Anirudha Ambekar & Jack J. Yoh

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  1. Yoocheon Kim
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  2. Anirudha Ambekar
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  3. Jack J. Yoh
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Correspondence to Jack J. Yoh.

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Kim, Y., Ambekar, A. & Yoh, J.J. Toward understanding the aging effect of energetic materials via advanced isoconversional decomposition kinetics. J Therm Anal Calorim 133, 737–744 (2018). https://doi.org/10.1007/s10973-017-6778-2

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  • DOI: https://doi.org/10.1007/s10973-017-6778-2

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