Hybrid Binder Fire Protection Molding for Low Density and High Strength
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Solution Overview
Problem
Current fire protection materials face challenges in achieving a balance between low density, high strength, flexibility, and thermal insulation while maintaining fire resistance and preventing cracking or crumbling at high temperatures, especially in modern building structures with complex geometries and increased energy supply lines.
Innovation Solution
The use of a hybrid binder system combining inorganic and organic components, specifically amorphous silica particles with acrylate-based polymers, and water-releasing minerals, which provide elasticity and maintain bonding at high temperatures, suppressing flammability and ensuring dimensional stability through thermal decomposition and water release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If lightweight fillers and low-density materials are used to reduce density, then weight is reduced, but strength and structural stability deteriorate
Solution Approach 1:
The patent uses a composite material system combining organic binder components (polyols, isocyanates, cellulose) with inorganic fire protection agents (aluminum trihydrate, magnesium hydroxide). This composite approach allows the material to achieve both low density (0.15-0.30 g/cm³) and high strength, as the organic matrix provides structural integrity while the inorganic fillers provide fire resistance without significantly increasing weight.
Solution Approach 2:
The patent implements local quality by creating a heterogeneous material structure where different components are distributed throughout the matrix. The fire protection agents are dispersed within the organic binder system, creating localized regions of enhanced fire resistance while maintaining overall material lightness. This local distribution allows the material to achieve fire protection performance without uniformly increasing density throughout the entire structure.
2Ease of operation
If organic binders are used to provide flexibility and elasticity, then ease of operation is improved, but fire resistance deteriorates due to flammability
Solution Approach 1:
The patent converts the harmful flammability of organic binders into a beneficial fire protection mechanism. When exposed to fire, the organic binder components decompose and release water vapor and other non-flammable gases, which actually help suppress combustion. The isocyanate groups react with moisture to form foam structures that expand and insulate the underlying substrate, transforming what would be a fire hazard into an active fire protection mechanism.
Solution Approach 2:
The patent utilizes phase transitions of the binder components during fire exposure. The organic binder undergoes thermal decomposition and chemical reactions that produce gaseous products, while the inorganic fire protection agents also undergo phase changes (such as aluminum trihydrate decomposing to release water vapor). These phase transitions create expanding foam structures and gas barriers that physically isolate the fire from the protected substrate, maintaining fire resistance despite the organic nature of the binder.
3Object-affected harmful factors
If inorganic binders are used to maintain fire resistance, then fire resistance is improved, but flexibility and elasticity deteriorate
Solution Approach 1:
The patent employs a composite binder system where inorganic fire protection agents (aluminum trihydrate, magnesium hydroxide) are integrated within an organic polymer matrix. The inorganic components provide fire resistance by releasing water vapor and forming protective char layers, while the organic polymer component (polyols, isocyanates) provides flexibility and elasticity. This composite approach allows both properties to coexist, as the inorganic fillers are dispersed throughout the flexible organic matrix rather than forming a rigid continuous phase.
4Reliability
If high-density fire protection materials are used to ensure structural stability, then reliability is improved, but weight increases
Solution Approach 1:
The patent utilizes a porous foam structure created by the expansion of isocyanate groups during curing and fire exposure. This porous architecture provides structural stability and fire resistance through the three-dimensional network of cell walls and the trapped air pockets, which act as thermal insulators. The porous structure achieves high strength-to-weight ratio, providing reliable structural support and fire protection while maintaining low density (0.15-0.30 g/cm³), avoiding the need for high-density solid materials.
Data Source
Figure 1
AI summary
The thermally insulating fire-protection moulding is characterized in that it contains at least one lightweight filler, one reaction product of the thermal curing of an organic-inorganic hybrid binder, one mineral that eliminates water, and also fibres and/or wollastonite, and is impermeable to smoke.