Fire-Resistant Coatings Using Hollow Ceramic Microspheres
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Solution Overview
Problem
Conventional fire-resistant compositions are not suitable for lignocellulose and wood materials, and they can be electrically conductive, leading to issues with electrical arcs and mechanical stress due to added weight.
Innovation Solution
A fire-resistant composition with a core-shell structure, using ceramic, glass, or polymer shells, combined with intumescents, blowing agents, catalysts, and binders, which reduces electrical conductivity and weight, making it suitable for various substrates including wood and metal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fire-resistant compositions containing graphite flakes are used, then fire-resistant performance is improved, but electrical conductivity increases leading to electrical arcs and flash events
Solution Approach 1:
The patent changes the electrical conductivity parameter by replacing conductive graphite flakes with non-conductive ceramic microspheres (alumina, silica, zirconia) as the fire-resistant composition material, thereby eliminating electrical arcs and flash events while maintaining fire protection
Solution Approach 2:
The patent uses composite ceramic microsphere materials with specific shell compositions (ceramic coatings on glass or polymer cores) to achieve both fire resistance and electrical non-conductivity, creating a multi-functional material system
2Reliability
If conventional fire-resistant compositions are used, then fire protection is provided, but weight increases causing additional mechanical stress on building materials
Solution Approach 1:
The patent changes the density parameter by using hollow ceramic microspheres with densities of 0.1-2.0 g/cm³ compared to conventional dense materials, significantly reducing coating weight while maintaining fire protection performance
Solution Approach 2:
The patent employs hollow ceramic microsphere structures with internal voids that provide fire resistance through thermal insulation while minimizing material density and overall coating weight on substrates
3Reliability
If conventional fire-resistant compositions are used, then fire resistance is achieved, but compatibility with lignocellulose and wood materials is poor
Solution Approach 1:
The patent changes the chemical composition parameters of the binder system by using acrylic, vinyl acrylic, or vinyl polymer binders with specific functional groups that provide chemical compatibility and adhesion to lignocellulose and wood substrates while maintaining fire protection
Solution Approach 2:
The patent introduces polymer binder intermediaries that act as chemical mediators between the ceramic microsphere particles and organic substrates like wood and lignocellulose, ensuring proper adhesion and compatibility across different material types
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 composition provides enhanced stability, reduced flaking, and equivalent or superior fire-resistant performance with significantly lower weight and electrical conductivity compared to conventional technologies.
Implementation Method 1
Such fire-resistant compositions typically include intumescents that swell upon exposure to heat
Implementation Method 2
a blowing agent
Implementation Method 3
a catalyst
Data Source
AI summary
Embodiments of the present disclosure generally relate to fire-resistant compositions and to coated substrates and articles comprising such compositions. In an embodiment, a fire-resistant composition is provided. The fire-resistant composition includes particles having a core-shell structure. The fire-resistant composition further includes an intumescent, a blowing agent, a catalyst, and a binder. In another embodiment, a coated substrate is provided. The coated substrate includes a substrate having a fire-resistant composition disposed thereon. In another embodiment, a fire-resistant article is provided. The fire-resistant article includes a flexible substrate having a fire-resistant composition disposed thereon.