Explosion Power and Pressure Desensitization Resisting Property of Emulsion Explosives Sensitized by MgH₂

Abstract

Due to low detonation power and pressure desensitization problems that traditional emulsion explosives encounter in utilization, a hydrogen-based emulsion explosives was devised. This type of emulsion explosives is sensitized by hydrogen-containing material MgH₂, and MgH₂ plays a double role as a sensitizer and an energetic material in emulsion explosives. Underwater explosion experiments and shock wave desensitization experiments show that an MgH₂ emulsion explosives has excellent detonation characteristics and is resistant to pressure desensitization. The pressure desensitization–resistant mechanism of MgH₂ emulsion explosives was investigated using scanning electron microscopy.

Keywords:

• blasting safety
• explosion power
• high energy emulsion explosives
• hydrogen containing material
• pressure desensitization

Acknowledgments

The authors thank Jie Tian of the Engineering Experiment Center at the University of Science and Technology of China for her enthusiastic support in scanning electron microscope analysis. This work was supported by the National Fund of Nature Science of China (Nos. 51174183 and 51134012), and the authors thank these foundations for the financial support.