Clear Inorganic Coatings for Fire-Safe Building Panels
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Solution Overview
Problem
Existing building panels made from natural materials face a trade-off between aesthetic value and fire safety, as flame retardant compositions degrade the cosmetic appearance.
Innovation Solution
A flame-retardant building panel with an inorganic coating comprising a phosphate compound and a metal complexing agent, applied to a cellulosic material, forming a glass-like barrier that enhances fire safety without compromising the aesthetic appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flame retardant compositions are applied to the major surfaces of cellulosic materials, then fire safety is improved, but the aesthetic value of the cellulosic substrate is degraded
Solution Approach 1:
The patent applies flame retardant treatment selectively to the edges and end-grain surfaces of the cellulosic substrate rather than the entire surface. This localized approach provides fire protection where it is most needed (edges are more susceptible to flame propagation) while preserving the aesthetic appearance of the major surfaces.
Solution Approach 2:
The patent treats different surfaces of the substrate differently - edges receive flame retardant composition while major surfaces maintain their natural appearance. This asymmetric treatment strategy addresses the fire safety requirement without compromising cosmetic value.
2Shape
If natural materials are used to maximize cosmetic value, then aesthetic appearance is improved, but flammability increases
Solution Approach 1:
The patent preserves the natural material's aesthetic qualities by leaving the major surfaces untreated, while applying flame retardant composition specifically to edges and end-grain areas where fire risk is highest.
Solution Approach 2:
The patent creates a composite structure where the natural cellulosic substrate is combined with flame retardant composition in specific regions, achieving both aesthetic value from the natural material and fire safety from the chemical treatment.
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 coating provides superior fire safety by forming a heat-insulative glass layer that prevents ignition and flame propagation, while maintaining the natural aesthetic of the panel.
Implementation Method 1
an inorganic coating applied to the first major surface, the inorganic coating formed from a composition comprising a flame retardant blend that includes: a phosphate compound; and a metal complexing agent
Implementation Method 2
forming a glass-like barrier that enhances fire safety without compromising the aesthetic appearance
Implementation Method 3
the inorganic coating comprising a flame retardant component that includes: a phosphate compound; and a metal complexing agent wherein the phosphate compound and the metal complexing agent are present in a weight ratio ranging from about 50:1 to about 200:1
Data Source
AI summary
The present invention is directed to a flame-retardant building panel comprising a body having a first major surface opposite a second major surface, an inorganic coating atop the first major surface, the inorganic coating comprising a flame retardant component that includes a phosphate compound, and a metal complexing agent. In other aspect, the invention is a method of forming a flame-retardant building panel comprising: a) applying an inorganic coating composition to a major surface of a body; and b) drying the inorganic coating composition at an elevated temperature.