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Open Access

Effects of temperature, particle size, and air humidity on sensibility of typical high-energetic explosives

Sanzhen WU1Mingkun FANG1Xingliang WU1Guangfei GUO1Junhong WANG1Sen XU1,2( )
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
China National Quality Supervision Testing Center for Industrial Explosive Materials, Nanjing, 210094, China
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Abstract

The production and utilization of high-energetic explosives often pose a range of safety hazards, with sensitivity being a key factor in evaluating these risks. To investigate how temperature, particle size, and air humidity affect the responsiveness of commonly used high-energetic explosives, a series of BAM(Bundesanstalt für Materialforschung und-prüfung) impact and friction sensitivity tests were carried out to determine the critical impact energy and critical load pressure of four representative high-energetic explosives (RDX, HMX, PETN and CL-20) under different temperatures, particle sizes, and air humidity conditions. The experimental findings facilitated an examination of temperature and particle size affecting the sensitivity of high-energetic explosives, along with an assessment of the influence of air humidity on sensitivity testing. The results clearly indicate that high-energetic explosives display a substantial decline in critical reaction energy when subjected to micrometre-sized particles and an air humidity level of 45% at a temperature of 90 ℃. Furthermore, it was noted that the critical reaction energy of high-energetic explosives diminishes with an increase in temperature within 25 ℃-90 ℃. In the same vein, as the particle sizes of high-energetic explosives increase, so does the critical reaction energy for micrometre-sized particles. High air humidity significantly affects the sensitivity testing of high-energetic explosives, emphasizing the importance of refraining from conducting sensitivity tests in such conditions.

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Journal of Measurement Science and Instrumentation
Pages 408-416
Cite this article:
WU S, FANG M, WU X, et al. Effects of temperature, particle size, and air humidity on sensibility of typical high-energetic explosives. Journal of Measurement Science and Instrumentation, 2024, 15(3): 408-416. https://doi.org/10.62756/jmsi.1674-8042.2024042

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Received: 21 October 2023
Revised: 29 December 2023
Accepted: 08 January 2024
Published: 30 September 2024
© The Author(s) 2024.

The articles published in this open access journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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