Transparent Fire Curtain Composite for Visibility and Fire Resistance
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Solution Overview
Problem
Conventional fire curtains lack transparency while meeting flammability resistance requirements, making it difficult for firefighters to assess conditions behind them, and existing translucent or transparent composite materials are rigid and not suitable for fire curtains.
Innovation Solution
A flexible, translucent or transparent composite material is developed by combining high purity silica fabric with a special refractory index controlled silicone resin, specifically using a three-layer system with optically controlled silicone resin layers surrounding an impregnated silica fabric, which enhances fire resistance and light transmissivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional materials are used in fire curtains, then flammability resistance is achieved, but light transmissivity is lost (opaque)
Solution Approach 1:
The patent applies composite materials by combining silica fabric with silicone resin to create a material that simultaneously achieves both flammability resistance and light transmissivity. The composite structure allows the silica fabric to provide fire resistance while the silicone resin coating enables light transmission, resolving the contradiction between these two properties.
Solution Approach 2:
The patent changes the refractive index parameter of the silicone resin to match that of the silica fabric, which transforms the composite material from opaque to translucent or transparent. This parameter adjustment allows light to pass through the interface between materials without significant scattering, achieving light transmissivity while maintaining fire resistance.
2Illumination intensity
If existing translucent or transparent composite materials are used, then light transmissivity is achieved, but flexibility is lost (rigid)
Solution Approach 1:
The patent employs flexible thin films by using silicone resin-coated silica fabric that maintains the flexibility needed for fire curtain applications. The thin film structure of the coating allows the material to bend and move while remaining translucent, unlike rigid composite materials that would compromise the curtain's operational flexibility.
Solution Approach 2:
The patent adjusts the shore hardness parameter of the silicone resin to ensure the composite material remains flexible. By controlling the resin's physical properties, the material achieves both translucency and the necessary flexibility for deployment in fire curtains, resolving the contradiction between optical clarity and mechanical flexibility.
3Object-generated harmful factors
If polyamide and silicone films are used, then smoke penetration is eliminated, but flame penetration protection is inadequate
Solution Approach 1:
The patent uses composite materials combining silica fabric with silicone resin to achieve both smoke and flame penetration resistance. The silica fabric provides structural integrity and fire resistance, while the silicone resin coating eliminates smoke penetration, creating a composite that simultaneously protects against both hazards.
Solution Approach 2:
The silicone resin acts as an intermediary layer that provides both smoke sealing and flame resistance properties. This intermediate coating on the silica fabric mediates between the requirements for smoke elimination and flame protection, achieving both functions in a single integrated solution.
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 material meets regulatory fire endurance standards, allows sufficient light transmission for visibility, and effectively resists high-temperature flame and smoke penetration, filling the gap between visibility and fire resistance in fire and smoke curtains.
Implementation Method 1
combining an opaque, fine fiberglass fabric with a refractory index controlled acrylic resin that matches the refractory index (RI), or refractory index value, of the fiberglass substrate
Implementation Method 2
The composite material may be pre-cut or may then be cut to the shape of the final composite panel... allows transmission of enough visible light to ascertain conditions behind the curtain
Data Source
AI summary
A fireproof, translucent, flexible coated fabric composite material for use in fire curtains. The composite material meets or exceeds regulatory requirements in terms of fire endurance and allows transmissivity of necessary amounts of light. The process of the present disclosure combines a silica fabric with a special refractory index controlled resin. This unique combination of materials can transform an opaque high temperature fabric into a translucent, and even transparent, composite which as the ability to resist high temperature, flame and smoke penetration that fills a needed gap in technology between visibility and fire resistance in the field of fire and smoke curtains used in civil construction.