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Characterization of thermally-damaged LX-17

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Abstract

Thermal damage was applied to LX-17 at 190°C for several hours. The damaged LX-17 samples, after cooled down to room temperature, were characterized for their material properties, safety and performance. Mass losses upon thermal exposure were insignificant (<0.1 mass%). The damaged LX-17 samples expanded, resulting in a bulk density reduction of 4.3%. Subsequent detonation measurements (cylinder tests) were conducted on the thermally-damaged LX-17 samples. The results showed that the fractions of damaged LX-17 reacted were slightly lower than those of pristine LX-17. The thermally damaged LX-17 samples had average detonation velocity of 7.341 mm μs−1, lower than that (7.638 mm μs−1) of pristine LX-17. The average detonation energy density for the damaged LX-17 was 5.18 kJ cm−3, about 6.0% lower than the detonation energy density of 5.51 kJ cm−3 for the pristine LX-17. The break-out curves showed reaction zone lengths for pristine LX-17 and damaged LX-17 were similar but the damaged samples had ragged detonation fronts. DSC curves showed no significant difference between pristine LX-17 and damaged LX-17 with a peak temperature of 381°C observed.

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Authors and Affiliations

  1. Lawrence Livermore National Laboratory, Livermore, California, 94551, USA

    P. Hsu, C. Souers, M. De Haven, R. Garza, J. Alvarez & J. Maienschein

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  1. P. Hsu
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  2. C. Souers
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  3. M. De Haven
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  4. R. Garza
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  5. J. Alvarez
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  6. J. Maienschein
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Correspondence to P. Hsu.

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Hsu, P., Souers, C., De Haven, M. et al. Characterization of thermally-damaged LX-17. J Therm Anal Calorim 93, 311–317 (2008). https://doi.org/10.1007/s10973-007-8869-y

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  • DOI: https://doi.org/10.1007/s10973-007-8869-y

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