Two-Part Fire-Resistant Epoxy Composition with Acid Curing
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Solution Overview
Problem
Existing fire-resistant compositions require large amounts of additives that diminish useful properties, and there is a need for compositions that can easily modulate fire resistance to suit various end-use applications without ignition upon exposure to extreme temperatures.
Innovation Solution
A two-part system comprising a first component with epoxy resins and fire-resistance-improving additives, and a second component with acids, which cure to form a reaction product upon mixing, providing fire resistance without latent curing agents or accelerators, and includes additives like ammonium polyphosphate and organic phosphinate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If large amounts of fire resistance improving additives are used, then fire resistance performance is improved, but physical and mechanical properties are diminished
Solution Approach 1:
The patent changes the chemical parameters of the system by using phosphorous-containing compounds that react to form protective char layers, rather than relying on high concentrations of traditional fire retardant additives. This chemical parameter change enables fire resistance with minimal additive content, preserving the physical and mechanical properties of the polymer composition.
Solution Approach 2:
The patent creates a composite system combining phosphorous-containing compounds with polymer matrices, where the phosphorous compounds form a protective barrier layer during combustion. This composite approach provides fire resistance through the synergistic interaction between the polymer and phosphorous additive, achieving fire protection without requiring large amounts of additives that would compromise mechanical strength.
2Reliability
If fire resistance improving additives are used, then fire resistance is improved, but the composition becomes more complex
Solution Approach 1:
The patent extracts the fire resistance function from complex multi-component additive systems and concentrates it into phosphorous-containing compounds that provide fire protection through a specific chemical mechanism. This extraction simplifies the composition by eliminating the need for multiple different fire retardant additives, reducing overall system complexity while maintaining fire resistance.
3Reliability
If the composition is designed for specific fire resistance performance, then fire resistance is optimized, but adaptability to different applications is reduced
Solution Approach 1:
The patent creates a universal fire resistance mechanism through phosphorous-containing compounds that can be incorporated into various polymer systems. The phosphorous compounds provide fire protection through a general chemical mechanism (char formation and fuel depletion) that works across different polymer types and applications, enabling the same basic composition to be adapted to multiple end-use applications while maintaining fire 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 system achieves fire resistance performance comparable to compositions with higher additive content without diminishing physical and mechanical properties, allowing for easier application and improved shelf life, and can be tailored for different applications.
Implementation Method 1
additives to improve fire resistance may be selected for their formation of a barrier or their gaseous pyrolysis emissions that dilute gaseous fuel sources
Implementation Method 2
The metal hydroxide may be present in the first component in an amount of about 5% or more, 10% or more, or even 15% or more, by weight of the first component
Data Source
AI summary
A fire-resistant two-part system comprising a first component and a second component. The first component comprises one or more fire resistance improving additives. The second component comprises one or more acids.