Effect of Perlite Content on Performance of Emulsion Explosive in Under-Water Environment

Liu, Lei; Hu, Qi; Zhang, Haitao; Qi, Jixing

doi:10.1088/1742-6596/2381/1/012102

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…Incapable of detonating on their own, EEs need the addition of a pore-forming sensitizer (i. e. artificial cavities/impurities), which will contribute positively to the detonation phenomena, working as "hot spots", responsible for converting the matrix to a detonable composition. The most commonly used sensitizers are hollow microspheres made of glass [9][10][11][12] or polymer [12][13][14], perlite [15][16][17], cenospheres [18,19], or chemical sensitization [20].…”

Section: Introductionmentioning

confidence: 99%

Detonation characterization of low‐density emulsion explosives

Pimenta

Quaresma

Ribeiro

et al. 2023

Propellants Explo Pyrotec

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Due to the wide applicability and popularity of emulsion explosives (EEs) in the industry, ongoing advancements have been made in order to better understand and optimize the capabilities of EEs. Over the recent years, work has been developed to understand the effect that additives have on the detonation phenomena, and the energetic properties of EEs. In recent studies, most emphasis has been given to energetic additives, and little information is available regarding non‐energetic additives, despite their rising use in industrial applications. This work intends to do a detonation characterization of low‐density EEs, using EPS as a non‐energetic additive, in a concentration range of 0 % to 4 %, and consequently, an EEs density range of 1.12 g/cm3 down to 0.49 g/cm3. In order to characterize the detonation velocity and pressure of these EEs, different charge configurations (rectangular cross‐section and cylindrical) and measurement methods (discrete and quasi‐continuous) were used throughout this work. The results obtained, for these charge configurations and within EEs with these compositions and densities, display a linear behaviour for the detonation velocity, ranging from 2126 m/s up to 5581 m/s, and also for the values of the detonation pressure, varying between 3.3 GPa up to 11.7 GPa.

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Section: Introductionmentioning

confidence: 99%

Detonation characterization of low‐density emulsion explosives

Pimenta

Quaresma

Ribeiro

et al. 2023

Propellants Explo Pyrotec

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Thermal Safety Study of Emulsion Explosive Matrix under the Coupled Effects of Environmental Pressure and Bubble Content with Internal Heat Source

Zhang,

Liu,

Shi

2024

Processes

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Emulsion explosives have become a hot topic in various studies due to their explosive combustion characteristics and detonation performance under different environmental pressures. The thermal safety of an emulsified matrix was studied with ignition energy as the characterization. A minimum ignition energy test experimental system for emulsion matrices was established in this research. The system simulated the occurrence of hot spots inside emulsion matrices using an electric heating wire. The effect of bubbles on the thermal safety of the emulsified matrix was studied by adding expanded perlite additive to the emulsified matrix. This study investigated the variation trend in the minimum ignition energy of the emulsion matrix under the coupled effect of bubbles and ambient pressure using the orthogonal experimental method. The impacts of two factors on the thermal safety of the emulsion matrix were studied at different hot-spot temperatures. Coupled analysis experiments were conducted on emulsion matrices containing 0%, 1.5%, and 3% expanded perlite under pressure environments of 1 atm, 2 atm, and 3 atm. The critical hot-spot temperature of the emulsion matrix significantly decreases with increasing bubble content at 1 atm and 2 atm pressures, as revealed by intuitive analysis and analysis of variance. However, at 3 atm of pressure, the bubble content in the emulsion matrix has no significant effect on its critical hot-spot temperature. The results show that the thermal safety of the emulsified matrix decreases with the increase in the content of expanded perlite and environmental pressure, and the influence of environmental pressure is more significant than that of the bubble content. This paper’s research content serves as a reference for a safe emulsified matrix and as an experimental basis for establishing a production line for developing new equipment.

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Effect of Perlite Content on Performance of Emulsion Explosive in Under-Water Environment

Cited by 2 publications

References 6 publications

Detonation characterization of low‐density emulsion explosives

Detonation characterization of low‐density emulsion explosives

Thermal Safety Study of Emulsion Explosive Matrix under the Coupled Effects of Environmental Pressure and Bubble Content with Internal Heat Source

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