Gas-Generating Agent Composition for Faster Inflator Ignition
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Solution Overview
Problem
Gas-generating agent compositions with low burn rates require complex shaping during molding and are unsuitable for early deployment in inflators, lacking good ignitability.
Innovation Solution
Incorporating basic magnesium carbonate with an average particle size of 12 μm or less into a composition of guanidine nitrate, a basic metal nitrate, and a binder, optimizing the mass percentages of these components to enhance burn rate and ignitability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the burn rate of the gas-generating agent composition is low, then the shape of the composition can be made larger, but the production process becomes complicated and early deployment capability is lost
Solution Approach 1:
The patent changes the chemical composition parameters by introducing basic magnesium carbonate as a new component and optimizing the ratio of existing components (guanidine nitrate, basic metal nitrate, binder) to achieve higher burn rate without complicating the molding process
Solution Approach 2:
The patent creates a composite gas-generating agent composition by combining multiple components with specific functions: guanidine nitrate as fuel, basic metal nitrate as oxidizing agent, binder for structural integrity, and basic magnesium carbonate as a key additive that enhances burn rate while maintaining manufacturability
2Speed
If the burn rate of the gas-generating agent composition is low, then the composition can be molded in simpler shapes, but early deployment capability is lost
Solution Approach 1:
The patent optimizes chemical composition parameters including the content of basic magnesium carbonate (0.1-10 mass%) and other components to achieve both high burn rate and short ignition time, directly addressing the time-related performance requirement
Solution Approach 2:
The patent uses basic metal nitrate as an oxidizing agent in combination with basic magnesium carbonate to accelerate the combustion reaction, achieving both high burn rate and rapid ignition suitable for early deployment applications
3Speed
If the ratio of melamine cyanurate to nitroguanidine is adjusted, then the burn rate can be improved, but the composition complexity increases
Solution Approach 1:
The patent simplifies the composition by using basic magnesium carbonate alongside guanidine nitrate and basic metal nitrate, avoiding the need for complex multi-component systems while achieving high burn rate through optimized parameter ratios
Solution Approach 2:
The patent creates an effective composite system with four main components where each serves a specific function, achieving high burn rate without the complexity of more elaborate compositions
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 resulting gas-generating agent composition exhibits a high burn rate and short ignition time, simplifying the molding process and enabling early deployment in inflators.
Implementation Method 1
a gas-generating agent composition containing guanidine nitrate as a fuel and a basic metal nitrate as an oxidizing agent, the burn rate of the gas-generating agent composition increases when basic magnesium carbonate is added
Data Source
AI summary
Provided is a gas-generating agent composition containing the components (a) to (d) below, in which an average particle size of the following component (d) basic magnesium carbonate is 12 μm or less: (a) guanidine nitrate; (b) a basic metal nitrate; (c) a binder; and (d) basic magnesium carbonate.