Polyurethane rock wool composite board is a new type of thermal insulation wall material that uses vertical rock wool as the core material, integrates rigid polyurethane foam and rock wool through continuous foaming technology, and has interface-reinforce
Product Specifications
Standard Size: 1200mm*600mm (Customizable)
Insulation Layer Thickness: 30mm-200mm
Class A Fire Resistance
Applications:
1. Exterior wall insulation for buildings requiring Class A fire resistance
2. Fire-resistant insulation strip material for organic insulation materials
3. Energy-saving retrofitting of existing buildings
Product Features
Waterproof and Moisture-proof
During the production process, liquid polyurethane completely and evenly covers the upper and lower surfaces of the vertical-fiber rock wool and penetrates into the rock wool board, forming a continuous closed-cell polyurethane waterproof isolation layer, overcoming the defect of rock wool's water absorption and deliquescence.
Waterproof performance comparison experiment
Ordinary rock wool board; Wanhua PRR insulation board
The final results show:
Temperature: 17.6°C Temperature: 17.7°C
Humidity: 71% Humidity: 97%
Excellent Mechanical Properties
Utilizing the superior self-adhesive properties of polyurethane, the flowing liquid polyurethane penetrates the rock wool in molecular form, repairing broken fibers caused by rock wool cutting and forming a penetrating physical bond, resulting in a 100% cavity-free connection. Its tensile strength is 15 times that of horizontally woven rock wool and twice that of vertically woven rock wool.
Two-way affinity interface-reinforced membrane High bonding strength
The upper and lower surfaces of the rock wool are composite interface-reinforced membranes (factory prefabricated). The interface-reinforced membrane is composed of cement, mortar, additives, etc., and its materials are basically the same as those of the bonding mortar and plastering mortar. The interface between the two has good compatibility, ensuring the tensile bonding strength between the PR insulation board and the base wall and protective layer.
Low thermal conductivity Good energy-saving benefits
During the polyurethane foaming process, rock wool gaps are filled to form a closed thermal insulation layer, preventing air convection and reducing the product's thermal conductivity.
Optimized construction environment Reduced harm to human health
The rock wool is completely encased, and no rock wool fragments are generated at the cutting site, greatly reducing the harm to workers caused by rock wool during construction, while also avoiding environmental pollution from rock wool dust.
Product Performance:
Five Major Performance Upgrades:
Higher mechanical safety, better waterproofing, superior energy efficiency, lower material costs, and lower labor costs.
| Polyurethane-Rock Wool Composite Board | Common Rock Wool Board | |
| Effective Bonding Area | ≥50% | 100% Full Adhesion |
| Rendering Layer Thickness | 4~6mm | 7~10mm |
| Reinforcing Mesh | Single-layer Fiberglass Mesh | Double-layer Fiberglass Mesh or Steel Wire Mesh |
| Anchor Disc Diameter | 60mm | 140mm |
| Labor Cost | Low Cost | Relatively High Cost |
| Construction Environment | Construction-friendly | Harmful to Skin and Respiratory System |
| Waterproof Interface Treatment | Pre-fabricated in Factory | On-site Brushing |
Performance indicators
| Item | Polyurethane-Rock Wool Composite Board | ||
| System | Weather Resistance | Appearance | No visible cracks, powdering or peeling on the finish; no hollowing in the protective layer |
| Tensile Bond Strength, kPa | 130 | ||
| Freeze-thaw Resistance | Appearance | No visible cracks, powdering or peeling in the protective layer after 30 freeze-thaw cycles; no hollowing in the protective layer | |
| Tensile Bond Strength, kPa | 140 | ||
| Board | Tensile Strength Perpendicular to the Board Surface, kPa | 130 | |
| Compressive Strength (at 10% Deformation), kPa | 80 | ||
| Thermal Conductivity (at Average Temperature 25℃), W/(m·K) | ≤0.040 | ||
| Water Absorption, kg/m² (Partial Immersion) | 24h | 0.2 | |
| 28d | 0.4 | ||
| Water Repellency Rate, % | 99.4 | ||
| Longitudinal Shear Strength, kPa | 102 | ||
Performance Comparison
1. Comparison of Construction Processes
Two layers of fabric and three coats: Topcoat thickness 7~10mm
Two layers of fabric and two coats: Topcoat thickness 4~6mm
2. Anchor Bolt Comparison:
Double Disc Anchor Bolt (140mm diameter)
Single Disc Anchor Bolt (60mm diameter)
3. Strength Comparison
Deformation occurs after being subjected to force
No significant change occurs after being subjected to force
PRR board: Vertical fiber rock wool composite interface reinforced roll material, high strength, will not deform due to the weight of the mortar when applying mortar and pasting the insulation board, ensuring convenient construction, flatness of pasting, and preventing the mortar from sticking poorly.
4. Construction cycle comparison: Compared with traditional rock wool systems, polyurethane rock wool composite panels have fewer construction steps and a construction cycle that is reduced by 1/3.
System Demonstration:
The polyurethane rock wool composite board thin plastering system coating finish consists of polyurethane rock wool composite boards, adhesives, plastic expansion anchors, alkali-resistant fiberglass mesh, plastering mortar, and finishing materials. It is suitable for installation on non-load-bearing structures on building exterior walls for thermal insulation and decoration. When using brick finishes, reinforced alkali-resistant fiberglass mesh should be used.
Paint Finish
1. Base Wall
2. Adhesive
3. Polyurethane Rock Wool Composite Board
4. Disc Anchors
5. Fiberglass Mesh Embedded in Plaster Mortar
6. Paint Finish
Facing brick finish
1. Base wall
2. Adhesive
3. Polyurethane rock wool composite board
4. Disc anchors
5. Reinforcing fiberglass mesh embedded in plastering mortar
6. Decorative surface layer
Construction Process
The system employs a "bonding + anchoring" fixing method, with bonding as the primary method and anchoring as a secondary method, providing double protection and ensuring high system safety.
