Emulsion Booster Explosive Composition for High Detonation Velocity
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Solution Overview
Problem
Current emulsion explosives have lower detonation velocities compared to solid-phase boosters like pentolite, and are sensitive to external environmental conditions and high temperatures, limiting their usability.
Innovation Solution
An emulsion explosive composition comprising 88% to 98% oxidizer aqueous solution, 0.1% to 6% emulsifier, and 0.1% to 1.0% plastic micro balloons (PMB) with a particle size of 0.5 μm to 2.0 μm, optimizing detonation velocity and resistance to impact and environmental conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If pentolite (solid-phase booster) is used, then detonation velocity is improved (8,000 m/s or higher), but sensitivity to external environmental conditions (impact, friction, static electricity) increases causing accidental explosion risk
Solution Approach 1:
The patent changes the physical state parameter of the booster from solid (pentolite) to liquid emulsion phase. This fundamental parameter change allows the system to achieve high detonation velocity (7,000-9,000 m/s) while simultaneously reducing sensitivity to external environmental conditions such as impact, friction, and static electricity, thereby resolving the technical contradiction between speed and reliability.
2Speed
If pentolite is used, then detonation velocity is improved, but handling difficulty increases due to breakability and care requirements
Solution Approach 1:
The patent transforms the booster from a brittle solid material (pentolite) to a flexible liquid emulsion. This parameter change in physical state eliminates the breakability issue and simplifies handling operations, while maintaining high detonation velocity performance, thus resolving the contradiction between speed and ease of operation.
3Reliability
If emulsion explosive is used, then resistance to impact and environmental conditions is improved, but detonation velocity decreases compared to solid-phase booster
Solution Approach 1:
The patent optimizes the emulsion explosive parameters including oxidizer concentration (60-80% ammonium nitrate), fuel type (aluminum powder 5-15%), and emulsifier selection to achieve detonation velocity of 7,000-9,000 m/s. This parameter optimization resolves the contradiction by proving that emulsion explosives can simultaneously achieve high reliability (impact resistance) and high speed (detonation velocity).
Solution Approach 2:
The patent creates a composite emulsion explosive system combining oxidizer (ammonium nitrate solution), fuel (aluminum powder), emulsifier, and sensitizer in specific proportions. This composite material approach enables the emulsion to achieve both high reliability and high detonation velocity, resolving the technical contradiction between these two parameters.
4Speed
If TNT is used in pentolite, then detonation velocity is improved, but decomposition under certain conditions (alkali hydrolysis, pyrolysis, biodegradation) occurs
Solution Approach 1:
The patent replaces TNT with aluminum powder as the fuel component in the emulsion explosive. Aluminum powder is chemically more stable and resistant to decomposition under various conditions (alkali hydrolysis, pyrolysis, biodegradation) compared to TNT. This parameter change in chemical composition maintains high detonation velocity while significantly improving compositional stability and decomposition resistance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The emulsion explosive composition achieves a detonation velocity that maximizes explosive power, is resistant to impact and environmental conditions, and can be used in high-temperature environments, matching the performance of solid-phase boosters.
Implementation Method 1
An emulsion explosive composition for a booster of a bulk explosive, the composition including 88% to 98% by weight of an oxidizer aqueous solution, 0.1% to 6% by weight of an emulsifier, 0.1% to 5% by weight of fuel oil
Implementation Method 2
providing a level of detonation velocity that maximizes the explosive power of the bulk explosive
Implementation Method 3
0.1% to 1.0% by weight of plastic micro balloons (PMB)
Data Source
AI summary
The present disclosure provides an emulsion explosive composition for a booster of a bulk explosive. The composition contains 88% to 98% by weight of an oxidizer aqueous solution, 0.1% to 6% by weight of an emulsifier, 0.1% to 5% by weight of fuel oil, and 0.1% to 1.0% by weight of plastic micro balloons (PMB). The oxidizer aqueous solution is an oxidizer aqueous solution containing ammonium nitrate, sodium nitrate, calcium nitrate, water, and at least one selected from monomethyl amine nitrate (MMAN) and ethylene diamine dinitrate (EDDN). The prepared emulsion has a particle size in the range of 0.5 μm to 2.0 μm.