BNCP Explosive Encapsulation for Shock Insensitivity
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Solution Overview
Problem
Conventional BNCP explosive materials are sensitive to mechanical shocks, fire, electrostatic discharge, and impact by shrapnel, making them susceptible to sympathetic detonation, which is a safety concern for handling and transportation, despite their lead-free and energetic properties.
Innovation Solution
Encapsulating BNCP particles with a surfactant-comprising shell to form an insensitive munition-type explosive material, which protects against mechanical shocks, fire, and electrostatic discharge while maintaining the capability for high-order detonation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional BNCP explosive material is used, then energetic properties and lead-free composition are achieved, but sensitivity to mechanical shocks and sympathetic detonation increases
Solution Approach 1:
A surfactant shell is formed around each BNCP particle to create a protective barrier. This shell acts as a flexible coating that isolates the explosive core from external mechanical shocks, fire, and electrostatic discharge, preventing sympathetic detonation while preserving the particle's energetic properties for intended detonation.
Solution Approach 2:
The invention creates a composite structure where BNCP particles are combined with surfactant materials to form encapsulated explosive particles. This composite approach integrates the high energy density of BNCP with the protective and insulating properties of surfactants, achieving both energetic performance and mechanical insensitivity.
2Ease of operation
If BNCP explosive material is handled and transported, then operational flexibility is improved, but risk of sympathetic detonation increases
Solution Approach 1:
The surfactant shell is applied in advance to each BNCP particle before handling and transportation. This preliminary protective action creates a barrier that prevents mechanical shocks, fire, and electrostatic discharge from triggering sympathetic detonation during operational activities, thereby enabling safe handling and transport.
3Reliability
If surfactant shell is added to BNCP particles, then insensitivity to mechanical shocks is achieved, but manufacturing complexity increases
Solution Approach 1:
The manufacturing process utilizes changes in physical parameters, specifically temperature and pH, to control the formation of the surfactant shell. By adjusting these parameters during the synthesis process, the surfactant shell forms automatically around the BNCP particles, simplifying the manufacturing process while achieving the desired insensitive munition properties.
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 surfactant shell enhances the safety and stability of BNCP by preventing sympathetic detonation, making it suitable for insensitive munition applications while retaining its energetic properties.
Implementation Method 1
a particle of BNCP and a surfactant-comprising shell that encapsulates the particle of BNCP
Implementation Method 2
BNCP is insensitive to light, is thermally stable to at least 200° C., is chemically stable for extended periods, and is absent of any and all lead-based-type toxic metals
Data Source
AI summary
Insensitive munition-type explosive material and methods for forming insensitive munition-type explosive material are provided. In an exemplary embodiment, an insensitive munition-type explosive material comprises a particle of BNCP and a surfactant-comprising shell that encapsulates the particle of BNCP.