Fire-Rated Door Core Using Gypsum Composite
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Solution Overview
Problem
Existing fire-rated doors are costly, difficult to manufacture automatically, and often require internal mineral cores that reduce panel strength and complicate assembly, with prior composite materials lacking necessary fire-resistant capabilities for certification.
Innovation Solution
Development of fire-resistant composite components comprising gypsum, fibers, and a rheology-modifying agent, with specific weight percentages and configurations, forming a cured composite suitable for fire-rated door cores and panels, excluding cement and flyash, and featuring an extruded border for enhanced structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If internal mineral core is used in fire rated doors, then fire resistance is improved, but panel strength is reduced and manufacturing complexity increases
Solution Approach 1:
The patent uses a composite material consisting of gypsum, fibers, and a rheology-modifying agent to create a fire-resistant door core that eliminates the need for separate internal mineral cores. This composite material provides both fire resistance and structural strength in a single integrated component, resolving the contradiction between fire resistance and panel strength.
2Reliability
If traditional fire rated door manufacturing methods are used, then fire rating is achieved, but manufacturing automation is difficult and cost is high
Solution Approach 1:
The patent changes the material parameters by using a extrudable composite material with specific composition ratios (gypsum 60-90%, fibers 1.5-26%, rheology-modifying agent 0.5-6%). This parameter optimization enables the material to be processed through automated extrusion and molding operations while maintaining fire rating capabilities, thus improving manufacturing automation and reducing costs.
3Adaptability or versatility
If routed details are created in fire rated doors, then design flexibility is improved, but internal mineral core is exposed and door strength is reduced
Solution Approach 1:
The integrated composite material structure allows for routed details and design flexibility without exposing internal mineral cores because the entire door core is made of the fire-resistant composite material. This maintains door strength while enabling design versatility.
4Manufacturing precision
If alignment of panels is performed manually, then assembly accuracy is achieved, but additional finishing is required and productivity is reduced
Solution Approach 1:
The patent incorporates a rheology-modifying agent in the composite material that improves workability and alignment during assembly. This parameter change enables better panel alignment during manufacturing while reducing the need for additional finishing operations, thereby improving both assembly accuracy and productivity.
Data Source
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AI summary
A composite product includes gypsum in an amount of 60 to 90% by weight, fibers in an amount of 1.5 to 26% by weight substantially homogeneously distributed through the composite, and a rheology-modifying agent in an amount of 0.5 to 6% by weight. The composite is caused or allowed to cure to form a cured composite. The cured composite is a fire resistant component used in a fire-rated door core, a fire-rated door or a fire-rated building panel. The fire resistant component may include a building panel, a door panel, a door core, a door rail, a door stile, a door lock block, a door border, or a door insert.