Layered Fireproof Insulation Board With Inorganic Aerogel Bonding
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Solution Overview
Problem
Existing integrated fireproof heat-insulating boards face issues with high organic content, insufficient fireproof performance, environmental pollution from toxic gas release, and high hygroscopicity leading to degradation and poor weather resistance.
Innovation Solution
An active and passive integrated fireproof heat-insulating board composed of n passive fireproof layers and n or n+1 active fireproof layers, using an aerogel and inorganic fiber felt with inorganic adhesives, and incorporating a phase change microcapsule material to enhance fireproofing and thermal insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If organic adhesives are used to bond different functional layers, then bonding strength is improved, but fireproof performance deteriorates and toxic gas release increases
Solution Approach 1:
The patent removes organic adhesives from the bonding process entirely, replacing them with inorganic bonding mechanisms. The functional layers are bonded through inorganic cementitious materials and mechanical interlocking, eliminating the source of toxic gas release while maintaining bonding strength.
Solution Approach 2:
The patent changes the chemical composition parameters of the bonding agents from organic to inorganic materials. By using inorganic cementitious materials with specific compositional parameters (calcium silicate, aluminum oxide, etc.), the system achieves both bonding strength and fireproof performance simultaneously.
2Loss of energy
If organic phase change materials like polystyrene are used, then heat insulation performance is improved, but fireproof performance deteriorates
Solution Approach 1:
The patent uses composite phase change materials that combine inorganic fireproof components with heat insulation functionality. The composite structure integrates fireproof agents, cementitious materials, and phase change materials, achieving both heat insulation and fireproof performance simultaneously without relying on organic materials.
3Object-generated harmful factors
If porous inorganic fiber materials like rock wool are used as heat-insulating materials, then fireproof performance is improved, but water absorption increases and weather resistance deteriorates
Solution Approach 1:
The patent utilizes porous inorganic fiber materials as the base structure for heat insulation and fireproofing. The porous structure provides excellent fire resistance while the patent addresses water absorption through additional hydrophobic treatments and composite material formulations.
Solution Approach 2:
The patent introduces hydrophobic agents and water-repellent coatings as intermediary layers or additives. These intermediaries prevent water from penetrating the porous inorganic fiber structure, thereby maintaining fireproof performance while reducing water absorption and improving weather resistance.
4Adaptability or versatility
If multiple functional layers are integrated, then comprehensive performance is improved, but organic content increases and environmental pollution worsens
Solution Approach 1:
The patent designs each functional layer to perform multiple functions simultaneously. For example, the heat insulation layer also provides fireproofing, and the bonding materials provide both structural integrity and environmental safety. This multi-functionality reduces the need for separate organic-treated layers, thereby reducing overall organic content and environmental pollution.
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 board achieves Class A non-combustibility, reduced hygroscopicity, improved weather resistance, and enhanced fire resistance, with a fire resistance limit of 1.5 hours or more, and a fire resistance rating 30% higher than single-layer boards, while maintaining low thermal conductivity and density.
Implementation Method 1
the aerogel is obtained by curing and drying an aerogel stock solution having adhesiveness
Implementation Method 2
the aerogel is obtained by curing and drying an aerogel stock solution having adhesiveness
Implementation Method 3
preparation method involving aerogel stock solution preparation and assembly under pressure and microwave drying
Data Source
AI summary
Provided are an active and passive integrated fireproof heat-insulating board and a preparation method thereof, including: n passive fireproof layers and n or n+1 active fireproof layers, the passive fireproof layers and the active fireproof layers are overlapped with each other into a whole. Each passive fireproof layer includes an inorganic fiber felt and an aerogel; the aerogel is obtained by curing an aerogel stock solution having adhesiveness, and the aerogel stock solution includes, in parts by mass, 1000 to 4000 parts of silica sol, 50 to 150 parts of soluble silicate, 10 to 50 parts of a phosphate adhesive, 5 to 20 parts of quicklime, 5 to 50 parts of titanium dioxide, 10 to 50 parts of calcium stearate, 5 to 50 parts of a hydrophobic modifier, 5 to 50 parts of an acid-base regulator, and 1000 to 4000 parts of a solvent.