Glued Modular Building Panels Fire Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing building construction systems fail to meet fire approval standards due to the use of metal fastening means that transfer heat and damage insulation materials like polyurethane and polyisocyanurate during fire tests.
Innovation Solution
A building construction system comprising modules with centrally arranged PUR or PIR insulation sandwiched between cover plates, where the joints between adjacent cover plates are glued using adhesives with a flash point above 1200°C, eliminating the need for metal fastening and ensuring the system passes fire approval tests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metal fastening means (screws and nails) are used to attach overlapping plate structures, then mechanical strength and structural stability are improved, but fire resistance is worsened because metal transfers heat into the expanded foam
Solution Approach 1:
The patent removes metal fastening means from the construction system entirely. Instead of using screws and nails that transfer heat to the foam, the system relies on the overlapping plate structure itself and adhesive bonding to provide mechanical connection, thereby eliminating the fire resistance problem while maintaining structural integrity.
Solution Approach 2:
The patent replaces the mechanical fastening system (metal screws and nails) with an adhesive bonding system. The adhesive provides both the mechanical connection strength and fire resistance, as it does not conduct heat into the expanded foam core like metal fasteners would.
2Object-affected harmful factors
If adhesive is used to join panels, then fire resistance is improved, but mechanical strength and reliability are worsened due to defects in contact surfaces
Solution Approach 1:
The patent divides the joining function into two separate components: adhesive bonding for fire resistance and mechanical fasteners for structural strength. The adhesive joins the panels while the mechanical fasteners provide reliable structural connection, with each component optimized for its specific function rather than requiring one material to perform both roles imperfectly.
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 system achieves high insulation power, prevents mildew, provides mechanical strength, and remains closed in case of a fire, ensuring the insulation is not damaged by heat, thus qualifying for use in building constructions.
Implementation Method 1
the joints between adjacent cover plates are glued together with an adhesive having a flash point above 1200°C
Implementation Method 2
at least one centrally arranged insulation member sandwiched between a first cover plate and a second cover plate, wherein the at least one insulation member is made in PUR or PIR
Data Source
AI summary
A building construction system (2) for construction of a building (20) is disclosed. The building construction system (2) comprises a plurality of modules (M1, M2, M3, M4, M5, M6, M7, M8, M9, M10, M11), each comprising at least one centrally arranged insulation member (4, 4′) sandwiched between a first cover plate (12, 12′) and a second cover plate (14, 14′). The at least one insulation member (4, 4′) is made in polyurethane (PUR) or polyisocyanurate (PIR). A reinforcement connection structure (10) extends between and is mechanically connected to opposite cover plates (12, 12′, 14, 14′). At least a portion of the joints (6, 6′) between adjacent cover plates (12, 12′, 14, 14′) are glued together.