Self-Degrading Explosive Formulation via Water-Swellable Polymer
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Solution Overview
Problem
Existing methods for degrading undetonated explosive charges, such as those used in seismic surveys, face challenges including the inactivation of microorganisms due to high temperatures and the reactivity of chemical reagents, leading to safety and environmental concerns, and the need for alternative solutions that convert explosives into inert compounds.
Innovation Solution
A self-degradable explosive formulation comprising a molecular explosive and a water-swellable polymer, which absorbs water to physically break down and desensitize the explosive, potentially combined with reducing agents or enzymes to convert the explosive into safe compounds, reducing the risk of accidental detonation and environmental pollution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If microorganisms are used to degrade explosive compounds, then the explosive can be bioremediated, but the microorganisms are inactivated by high temperatures during explosive formulation production
Solution Approach 1:
The patent introduces a protective barrier layer as an intermediary between the explosive formulation and the environment. This barrier prevents premature contact between the explosive and degrading agents, allowing the system to maintain stability during high-temperature production while enabling controlled degradation afterward through the barrier's selective permeability or degradation triggers.
Solution Approach 2:
The patent incorporates protective agents or barrier formulations during the explosive production stage that remain inactive under high-temperature conditions but activate later. This preliminary preparation allows the system to withstand production temperatures while pre-positioning the bioremediation capability for future activation under appropriate conditions.
2Reliability
If chemical reagents are used to degrade explosive compounds, then the explosive can be chemically degraded, but the reagents may be too reactive creating safety concerns
Solution Approach 1:
The patent employs chemical reagents formulated with modified reactivity parameters - such as controlled release mechanisms, encapsulation, or formulation with inhibitors - that reduce immediate reactivity during handling and production while maintaining effective degradation capability when activated by specific triggers like pH changes, temperature shifts, or contact with explosive compounds.
Solution Approach 2:
The patent introduces a protective barrier or controlled-release matrix as an intermediary between the chemical reagent and the explosive compound. This intermediary controls the rate and conditions of reagent release, preventing premature or excessive reactivity while ensuring effective degradation occurs under controlled conditions afterward.
3Duration of action of stationary object
If explosive formulations maintain explosive characteristics for extended periods, then they remain effective for their intended use, but they pose continued risk of accidental detonation
Solution Approach 1:
The patent segments the explosive formulation into distinct functional components: a stable explosive core that maintains effectiveness, and a separate degradable barrier or protective layer that provides time-limited stability. This segmentation allows the explosive to remain effective for its intended duration while the barrier systematically degrades over time to eliminate the risk of accidental detonation.
Solution Approach 2:
The patent creates a dynamic system where the protective barrier or degradable layer changes its properties over time - remaining intact during the service life to maintain explosive effectiveness, then progressively degrading to eliminate the hazard. This dynamic behavior allows the system to adapt between two opposing requirements: maintaining effectiveness and eliminating risk.
4Reliability
If nutrients are added to explosive formulations to support microorganism activity, then bioremediation can occur, but the formulation complexity and production difficulty increase
Solution Approach 1:
The patent extracts or removes the need for additional nutrient additives by using the explosive formulation itself or its degradation products as the food source for microorganisms. Alternatively, it uses naturally occurring substances already present in the environment or in the formulation base, eliminating the need to introduce separate nutrient components and simplifying the formulation.
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 self-degradable formulation effectively reduces the risk of accidental detonation and environmental pollution by physically breaking down the explosive and chemically converting it into inert compounds, providing a safer and more environmentally friendly solution for undetonated explosives.
Implementation Method 1
a water-swellable polymer, which absorbs water to physically break down and desensitize the explosive
Implementation Method 2
potentially combined with reducing agents or enzymes to convert the explosive into safe compounds
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The present invention relates to self-degradable, shaped explosive formulations, comprising a molecular explosive and a water-swellable polymer.