FRP facing PU sandwich panels combine the performance advantages of FRP (fiberglass reinforced) and PU (polyurethane), becoming a popular material for thermal insulation panels. TOPOLO as a premium composite panel manufacturer in China, provides high-quality and durable FRP facing PU sandwich panels.
In general, the advantages of FRP PU sandwich panels are:
- Thermal insulation.
- Waterproof and moisture resistant.
- Lightweight and strong.
- Durable and weather resistant.
- The thermal conductivity of flat FRP is generally 0.4 W/m.k, and it has good waterproof performance, high hardness, and a smooth surface. As a surface material, it has a very aesthetic effect.
- PU foam is a closed-cell foam with extremely high thermal conductivity, ranging from 0.017 to 0.027 W/m.k, and is extremely lightweight, so it is often used as the first choice for thermal insulation core materials.
Schematic Diagram
Most FRP laminated PU composite panels have a typical sandwich structure: the upper and lower layers are FRP sheets, and the middle layer is a PU foam core.
Specifications
| Facing | Gelcoat FRP. (Thickness: 0.7~5.0mm) |
| Core Materials | Polyurethane Foam. (Density: 28~50 kg/m³) |
| Composite Methods | Adhesive. |
| Surface Treatment | Glossy, matte, embossed, etc. |
| Surface Color | RAL color. |
| Internal Reinforcement Materials | Aluminum profiles, steel profiles, wood, fiberglass profiles, etc. |
| Length | ≤12m |
| Width | ≤3.2m |
| Thickness | 10~150mm |
Processing of FRP PU Foam Composite Panels
Embedded reinforced structural materials
- In order to enhance the strength of the composite panel and meet some special application requirements, reinforced structural materials such as timbers, aluminum tubes, steel pipes, and FRP components are embedded inside.
Add Other Materials
- FPP PU foam core composite board is not just a three-layer sandwich structure (the upper and lower layers are FRP, and the middle layer is PU foam). Sometimes other materials such as aluminum plates, GMT (Glass Mat Reinforced Thermoplastics), other foam materials, plywood, etc. need to be added according to application requirements.
CNC Machining
- High-precision CNC machinery can perform one-stop operations such as high-speed and accurate cutting, drilling, and grinding of composite panels, which saves customers a lot of post-processing time.
Applications of FRP PU Sandwich Panels
FRP PU foam sandwich panels are most widely used in the thermal insulation industry, such as refrigerated trucks, refrigerated trailers, mobile cold rooms, and RVs that require thermal insulation.
Expert in FRP Sandwich Panels -TOPOLO
TOPOLO uses vacuum compression technology to produce FRP foam panels, eliminating the air between the FRP facing and the PU foam, making them bonded more tightly and the surface of the FRP sheet smoother, which is impossible with hand-pressed composite panels.
TOPOLO also offers FRP panels with foam cores, such as XPS (extruded polystyrene), PET (polyethylene terephthalate), PVC (polyethylene terephthalate), etc., and provides box body design services. Please consult us to find the composite material that best suits your needs.