Influence of Aluminum Particle Size on Explosion Performance and Thermal Stability of Thermobaric Explosive

WANG Mingye; HAN Zhiwei; LI Xi; WANG Boliang

doi:10.11858/gywlxb.20170627

Volume 32 Issue 3

Apr 2018

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Chinese Journal of High Pressure Physics > 2018 > 32(3): 035201.

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WANG Mingye, HAN Zhiwei, LI Xi, WANG Boliang. Influence of Aluminum Particle Size on Explosion Performance and Thermal Stability of Thermobaric Explosive[J]. Chinese Journal of High Pressure Physics, 2018, 32(3): 035201. doi: 10.11858/gywlxb.20170627

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Influence of Aluminum Particle Size on Explosion Performance and Thermal Stability of Thermobaric Explosive

doi: 10.11858/gywlxb.20170627

School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

Received Date: 07 Aug 2017
Rev Recd Date: 30 Oct 2017

Abstract

Abstract

In the present study we fabricated a thermobaric explosive with 3 kinds of aluminum powders (40 nm, 3 μm and 35 μm) to study the influence of the aluminum particle size on the explosive energy output of the thermobaric explosive in a confined space.We measured its shock wave pressure histories at 1.0 m, 1.2 m and 1.5 m of the explosion chamber, and obtained the overpressure and impulse values by analyzing the curves.We also studied the thermal decomposition of thermobaric explosives with different particle sizes of aluminum powder using the DSC.The results show that the aluminum particle size has a great influence on the explosion energy of the thermobaric explosive in a confined space, the overpressure of 2^# sample with particle size of 3 μm is at least 6.0% and 10% higher than 1^# and 3^# sample at each distance, the thermal stability of the 3 samples reduces with the decrease of the aluminum particle size, the biggest falling range of the activation energy is 31.1%, and the maximum value of T_P0 is reduced by 11.7℃.
- aluminum particle size,
- thermobaric explosive,
- explosion,
- energy,
- thermal stability

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Influence of Aluminum Particle Size on Explosion Performance and Thermal Stability of Thermobaric Explosive

doi: 10.11858/gywlxb.20170627

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Influence of Aluminum Particle Size on Explosion Performance and Thermal Stability of Thermobaric Explosive

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