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Updated: Sep 3, 2025
08:35
Minimum Burning Pressures of Water-based Emulsion Explosives
Published on: October 31, 2017
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Perspectives in the stability of emulsion explosive
Kai-Ming Zhang1, Hai-Rong Zhao2
1Department of Material Science and Engineering, Nanjing Institute of Technology, Nanjing 211167, PR China; Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, 1 Hongjing Road, Nanjing 211167, PR China.
Advances in Colloid and Interface Science
|July 25, 2022
Summary
This review examines emulsion explosive stability, detailing instability causes, mechanisms, and improvement strategies. Key factors include droplet characteristics and interfacial film strength for enhanced safety and performance.
Area of Science:
- Materials Science
- Chemical Engineering
- Explosives Technology
Background:
- Emulsion explosives are highly concentrated emulsions (dispersed phase > 74%).
- Stability is critical for safety and performance, influenced by droplet polydispersity, deformation, and ammonium nitrate (AN) content.
- Instability arises from droplet coalescence and AN crystallization.
Purpose of the Study:
- To comprehensively review emulsion explosive stability.
- To identify key factors influencing stability and methods for improvement.
- To propose effective stability evaluation and prediction techniques.
Main Methods:
- Literature review and synthesis of existing research on emulsion explosive stability.
- Analysis of instability reasons, stability mechanisms, and influencing factors.
- Summary of targeted improvement strategies and evaluation methods.
Main Results:
- Coalescence and ammonium nitrate (AN) crystallization are primary instability drivers.
- Interfacial film strength is the most critical stability mechanism.
- Emulsifier structure significantly impacts stability and is a key target for improvement.
Conclusions:
- Optimizing emulsifier structure and interfacial film strength enhances emulsion explosive stability.
- Targeted strategies exist for bulk, packaged, and powdery emulsion explosives.
- Effective evaluation methods aid further research and technical support for highly concentrated emulsions.
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