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FRP XPS foam sandwich panel
FRP XPS foam sandwich panel

FRP XPS Sandwich Panel

TOPBOND FRP XPS Sandwich Panel also called GRP XPS Sandwich Panel is composed of two gel coated FRP sheets bonded to a XPS foam. XPS has a closed-cell structure, which makes XPS boards have low water absorption, low thermal conductivity, high compression resistance, and aging resistance. It is used in RVs, insulated compartments, environmental protection facilities, cabins, personalized customization, etc.

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Features of FRP/GRP XPS Sandwich Panel

  1. Low Thermal Conductivity
    The thermal conductivity of FRP is low, which is 1.25~1.67kJ/(m.h.K) at room temperature, while the thermal conductivity of XPS is only 0.028 w/(m.k). This low thermal conductivity feature makes the FRP XPS sandwich panel a good material for heat insulation.
  2. Lightweight but high strength
    FRP XPS sandwich panel has the same lightweight and high strength feature like honeycomb panels. Because XPS foam is a low density material but has closed cell structure which is stable and strong. The relative density of the surface FRP plate is between 1.3 to 2.0, only 1/4-1/5 of carbon steel, but the tensile strength is close, or even harder than carbon steel, and the strength can be compared with alloy.
  3. Good Weather Resistance
    The anti-aging film on the surface of the FRP plate makes the ultraviolet light almost completely filtered, and the panel life is expected to reach 25 years, which greatly reduces the material cost and construction cost caused by frequent replacement of the plate.
  4. Good Corrossion Resistance
    FRP is a good corrosion-resistant material, it has good resistance to atmosphere, water, acids, alkalis, salts, as well as a variety of oils and solvents. It has been applied to all aspects of chemical anti-corrosion, and is replacing carbon steel, stainless steel, wood, non-ferrous metals.

Specifications of FRP XPS Sandwich Panel

Materials Used of FRP/GRP XPS Foam Sandwich Panel

  • Top skin materials: gel coated FRP sheet in different colors and finishes, white matt finish and white glossy finish are the most preferred surface.
  • Core material: XPS foam, it is made from extruded polystyrene. The closed cell structure of XPS foam has high density and mechanical strength, low thermal conductivity and very low water absorption.
  • Back skin material: gel coated FRP sheet with or without gel coating. Customer can choose to use non-gel coated FRP sheet as bottom skin when the bottom skin is not visible after panel installation. The non-gel coated FRP sheet is relatively cheaper than gel coated FRP.
  • Structure of FRP XPS sandwich panel
Overall Panel Thickness From 6mm to 200mm, commonly used 15mm, 20mm, 25mm, 30mm, 50mm
TOP and Bottom Skins FRP sheet, thickness 1.5mm, 2.0mm, 2.5mm, 3.0mm, etc.
Core Material XPS foam, density 32kg/m3
Surface Finish Matt smooth, glossy smooth, embossed, diamond,etc.
Panel Size Standard 4ftx8ft, customize size within 2 meters by 6 meters
Colors White, black, yellow, grey, any RAL colors.
Working Temperature  -40℃ to 120 ℃, high temperature resistance
Thermal Conductivity  0.028W/ (m.K)
  • TOPBOND manufactures the FRP/GRP sandwich panels in various dimensions and with different surface finish.
  • We provide customization service to your specific applications. The panel thickness, length, width, color all can be tailor-made.
  • Max. size of the panel we can produce is 2000x6000mm.

Applications of FRP XPS Sandwich Panel

FRP XPS Sandwich Panel is popular material to make body of RVs, new energy vehicles, environmental protection facilities and cabins.
It can be used to make wall panel,roofs and floors of trucks, trailers, caravans, campers and mobile-homes.

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