Fire Protection Glazing With Silane-Bonded Hydrogel Layers
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Solution Overview
Problem
Existing fire-resistant glazing technologies using hydrogels face issues such as the use of toxic and carcinogenic materials, poor adhesion to glass surfaces, and the need for rapid polymerization processes that are prone to errors, leading to potential health hazards and reduced effectiveness.
Innovation Solution
A fire-resistant glazing system utilizing a hydrogel composed of non-toxic, non-carcinogenic monomers, polymerized in an acidic environment, with thermal activation above room temperature, and enhanced adhesion through an organofunctional silane layer, ensuring stable bonding to glass surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydrogels are made from traditional monomers (acrylamide, methylolacrylamide), then fire-resistant properties are achieved, but toxic and carcinogenic substances are used
Solution Approach 1:
The patent changes the chemical parameters of the monomers by selecting non-toxic alternatives (acrylic acid, methacrylamide) that maintain fire-resistant functionality while eliminating harmful properties. This parameter substitution resolves the contradiction between achieving fire resistance and avoiding toxic substances.
Solution Approach 2:
The patent uses monomers that are safer and more environmentally friendly, effectively replacing hazardous materials with benign alternatives that achieve the same functional purpose without the harmful side effects.
2Productivity
If polymerization is activated immediately after adding initiator, then crosslinking and curing begin rapidly, but the process requires great haste and is prone to errors
Solution Approach 1:
The patent applies organofunctional silane to the glass surface in advance of polymerization. This preliminary action prepares the surface for optimal adhesion without triggering immediate polymerization, allowing controlled and error-free manufacturing while maintaining high productivity.
Solution Approach 2:
The patent introduces dynamic control of the polymerization process by separating the initiator addition from the actual polymerization activation. This allows the process to proceed at a controlled pace rather than requiring immediate rapid action, reducing errors while maintaining efficiency.
3Ease of manufacture
If high pH values are used for polymerization, then water-soluble monomers polymerize preferentially, but glass corrosion and cloudiness occur
Solution Approach 1:
Instead of using high pH values to promote polymerization, the patent inverts the approach by using acidic conditions (low pH) with organofunctional silane modification. This reverses the traditional method while achieving both good polymerization and prevention of glass corrosion.
Solution Approach 2:
The organofunctional silane acts as an intermediary between the monomers and the glass surface. It mediates the polymerization process in acidic conditions, enabling effective monomer polymerization while protecting the glass from corrosion and cloudiness that would occur with direct high pH exposure.
4Reliability
If traditional hydrogel compositions are used, then fire-resistant layer is formed, but adhesion to glass surface is poor
Solution Approach 1:
The patent creates a composite system combining organofunctional silane-modified glass surface with the hydrogel fire-resistant layer. This composite approach enhances adhesion strength while maintaining the fire-resistant properties of the hydrogel layer.
Solution Approach 2:
The organofunctional silane serves as an intermediary layer between the glass surface and the hydrogel fire-resistant layer. This intermediary improves bonding and adhesion strength while allowing the fire-resistant layer to form effectively.
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 solution provides a non-toxic, stable, and effectively adhered fire-resistant layer that maintains insulation integrity during fires, reducing health risks and improving longevity by preventing glass corrosion and clouding.
Implementation Method 1
Polymerization of the polymer from the monomers is thermally activated, and thermal activation occurs above room temperature
Implementation Method 2
enhanced adhesion through an organofunctional silane layer, ensuring stable bonding to glass surfaces
Implementation Method 3
The fire-resistant layer then has a cooling and/or insulating or reflective effect
Data Source
Figure 1a~1b
AI summary
The fire-resistant glazing comprises at least two glass panes with a transparent layer of fire-resistant material sandwiched between them. This fire-resistant material is a hydrogel. The components of the fire-resistant material are water-soluble, non-toxic monofunctional monomers in an acidic environment, as well as at least one bi- or polyfunctional monomer and optionally an initiator in an aqueous salt solution or dispersion. The monofunctional and bi- or polyfunctional monomers are non-toxic, non-carcinogenic, and non-mutagenic. Furthermore, the two transparent glass panes have a layer of organofunctional silane on the side facing the fire-resistant material.