Polyurethane sandwich wall panel
A prefabricated sandwich wall panel formed by continuous foam‑injection molding, featuring a colored coated steel sheet (or cement fiberboard) as the face sheet and rigid polyurethane foam as the core material.
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Insulation board category
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Polyurethane sandwich wall panel
A prefabricated sandwich wall panel featuring a colored coated steel sheet (or cement‑fiber board) as the facing and rigid polyurethane foam as the core, produced through continuous foaming and composite molding. It integrates thermal insulation, heat resistance, fire protection, decorative appeal, and load-bearing capabilities, eliminating the need for on-site secondary insulation work, making it the preferred enclosure material for prefabricated and temporary structures.
Performance Metrics
1. Combustion Performance: Core material Class B (flame-retardant), overall combustion performance Class B1.
2. Thermal conductivity (core material): 0.023 W/(m·K)
3. Core material density: 20–40 kg/m³
4. Bonding strength (panel to core material): ≥0.1 MPa
5. Flexural Load Capacity: ≥1.5 kN/m (for a slab span of 3.6 m)
6. Wind-pressure resistance: ≥3.0 kPa
7. Airborne sound insulation rating: ≥40 dB
8. Steel plate thickness: 0.3 mm (for every additional 0.05 mm, the price increases by RMB 6 per square meter)
Scope of Application
1. Enclosing walls for prefabricated industrial plants and warehousing/logistics centers.
2. Cold-chain logistics cold storage facilities and biopharmaceutical cleanrooms.
3. Temporary structures, prefabricated buildings, and project office facilities.
4. Commercial showrooms, temporary sales offices, and guard booths.
5. Modernized livestock farms and flue-cured tobacco barns.
Product Advantages
1. High degree of integration: insulation, decoration, and enclosure are integrated into a single system, reducing construction processes and shortening the project schedule by 50%.
2. High construction efficiency: Prefabricated installation allows for 300–500 m² to be installed in a single day, 3–5 times faster than conventional methods.
3. Lightweight and high-strength: With a surface density of ≤25 kg/m², it is only one-tenth that of a brick wall, significantly reducing the structural load.
4. Excellent thermal insulation: The polyurethane core material has a low thermal conductivity, providing significant warmth in winter and effective heat insulation in summer.
5. Wide applicability: Suitable for both industrial and residential settings, particularly well-suited for rapid‑construction projects.
Instructions for Use
1. Steel structure installation: Begin by installing steel columns and steel purlins, with a purlin spacing of no more than 1.5 m and a flatness deviation of no more than 3 mm.
2. Wall panel transportation: Use dedicated racks to prevent bending or deformation, and stack no more than 5 layers high.
3. Wall panel installation: Install from bottom to top, with tongue-and-groove joints between panels, and secure with self-tapping screws into the purlins at intervals no greater than 300 mm.
4. Sealing Treatment: Apply a specialized polyurethane sealant to the panel joints (with weather resistance of ≥10 years), and reinforce the corners with dedicated corner brackets.
5. Installation of door and window openings: Leave an expansion joint of 10–15 mm at the door and window openings, and seal it with sealant after installation.
6. Acceptance Criteria: Wall panel verticality deviation ≤ 3 mm/m; surface flatness deviation ≤ 2 mm/m.
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