Fiber Cement Cladding with Adhesive Fire Protection
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Solution Overview
Problem
Existing wall and ceiling coverings for buildings are time-consuming and costly to install due to complex fire protection requirements, and materials like stainless steel are inefficient for fire protection due to high heat conductivity.
Innovation Solution
A composite wall and ceiling cladding system comprising a fiber cement element with a solvent-free inorganic one-component system and a neutral wetting one-component system based on silane-modified polymers, which can be quickly and efficiently installed without additional fireproof profiles, using a combination of adhesive systems to ensure solid fixation while meeting fire protection standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical connections with non-combustible profiles, anchors and screws are used to connect decorative surfaces to wall and ceiling elements, then fire protection requirements are met, but installation time increases significantly and costs increase due to expensive connecting elements
Solution Approach 1:
The patent replaces the mechanical connection system (profiles, anchors, screws) with a chemical bonding system using adhesive compositions. The adhesive is applied directly to the back of the cladding elements, eliminating the need for mechanical fasteners while maintaining secure attachment to the substrate.
Solution Approach 2:
The adhesive composition is specifically formulated with fire-retardant properties, changing the chemical parameters of the bonding agent to ensure it meets fire protection requirements. The adhesive contains inorganic fillers and fire-retardant additives that provide fire resistance without requiring additional mechanical fire protection components.
2Reliability
If mechanical connections with non-combustible profiles, anchors and screws are used to connect decorative surfaces to wall and ceiling elements, then fire protection requirements are met, but manufacturing costs increase due to expensive connecting elements
Solution Approach 1:
The patent replaces the mechanical connection system (profiles, anchors, screws) with a chemical bonding system using adhesive compositions. The adhesive is applied directly to the back of the cladding elements, eliminating the need for mechanical fasteners while maintaining secure attachment to the substrate.
Solution Approach 2:
The adhesive composition serves as a single-use, cost-effective bonding agent that eliminates the need for expensive reusable mechanical connecting elements. The adhesive is applied once during installation and provides permanent bonding without requiring additional fire protection components.
3Strength
If stainless steel hollow body is used for wall and ceiling elements, then structural integrity is achieved, but fire protection performance deteriorates due to high heat conductivity of stainless steel
Solution Approach 1:
The patent uses fiber cement composite material that combines the structural integrity of cement with the fire-resistant properties of cellulose and polyethylene fibers. This composite material provides both the required mechanical strength and superior fire protection performance, eliminating the heat conductivity problem of stainless steel.
Solution Approach 2:
The material composition is specifically designed with fire-retardant properties, changing the thermal parameters to achieve low heat conductivity. The fiber cement composite has a thermal expansion of about 0.01 mm/mK and fire behavior classified as A2-s1, d0, providing both structural and fire protection functions.
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 composite system reduces installation time and costs, provides effective fire protection, and allows for decorative options without compromising fire safety, making it suitable for high-fire-risk areas like public buildings.
Implementation Method 1
at least one adhesive composition comprising a solvent-free inorganic one-component system and a neutral wetting one-component system based on silane-modified polymers
Data Source
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AI summary
The invention relates to a wall and/or ceiling cladding comprising: a first composite element made of at least one fiber cement with - a mean modulus of elasticity of at least 10,000 MPa measured according to EN12467: 2012+A2:2018, - a thermal expansion of about 0.01 mm/mK according to ASTM E228-95: - wherein the first composite element 10 has a total thickness of at least 2 mm and the material of the first composite element 10 has a fire behavior of A2-s1, d0 according to DIN EN 13501-1: 2018, at a bulk density of about 1,800 kg/m3, a second composite element comprising - at least one solvent-free, inorganic one-component system based on water glass containing sodium or potassium or lithium silicates, - a bulk density of about 1.700 kg/m³, - wherein the second composite element with an application rate of approximately 1 to 10 kg/m², preferably approximately 1.5 to 5 kg/m², is arranged on at least one side of the first composite element, - and has a fire behavior of A1 according to DIN EN 13501-1: 2018, comprising a third composite element - at least a neutral-curing one-component system based on silane-modified polymers with a bulk density of approximately 1,600 kg/m³, - wherein the third composite element with an application rate of approximately 10 to 70 g/m², preferably approximately 20 to 60 g/m², is arranged on at least one side of the first composite element, - and has a Shore A hardness of approximately 25 to 90, preferably 35 to 75 according to DIN EN ISO 868:2003-10, that the second composite element at least partially encloses the third composite element, that the wall and/or ceiling cladding has a total thickness of at least 4 mm and a fire behavior of A2-s1, d0 according to DIN EN 13501-1: Edition 2019-05.