FRP sandwich panel is Widely used in a variety of industries, including dry trucks, postal vehicles, media broadcast vehicles, mobile communication vehicles, refrigerated cars, saloon cars, refrigerators, movable board rooms and building wall partition and other fields.The sandwich structure panel is made of FRP gel coat as inner (outer) panel , and is made of non-sandwich material as core material according to the requirements of use.Its structure is: FRP panel (inner panel) + core material (XPS, EPS, PUR, honeycomb board, wood laminate, etc.) +FRP panel (outer panel). Runfeng reduces the weight of the panel and at the same time gives consideration to good mechanical properties, with excellent insulation, light weight, high strength, green environmental protection, waterproof, moisture proof, corrosion resistance and other characteristics.
FRP sandwich panel can replace color steel panel, aluminum panel, stainless steel panel, and overcome the traditional products rust, corrosion, thermal conductivity, easy to sag deformation, not easy to clean, poor durability, easy to wear, can not adapt to the harsh environment and other shortcomings.
After special surface treatment, the panel has the characteristics of high self-cleaning, optical linearity, anti-ultraviolet linearity and antistatic
FRP insulation and refrigerated car panel is a popular type of car panelat present. The product is made of sandwich structure, the outer layer is covered with FRP, and the middle is made of high-density polyurethane foam material. The thickness of the insulation layer is 10-100mm, and the thickness of the panel is 1.0-6mm.
At present, the larg length of the panel is 10 meters, the width is 3 meters, but also according to the user's requirements of the size of the specifications. The panel are widely used in refrigerated cars, containers, saloon cars, mobile homes, temporary offices, sentry boxes, etc..
The panel is mainly composed of three layers:
The first layer: FRP panel, is made of alkali-free glass fiber mat, reinforced polyester resin, gel and additives and other materials composite molding.FRP panels are widely used in the wall panels of refrigerated cars because of their smooth appearance, light weight, high strength, high light transmittance, corrosion resistance, aging resistance, flame retardant, water impermeability, easy installation and service life of 15-20 years.
The second layer: XPS panel is mainly made of polystyrene as raw material, and polystyrene is originally a better raw material with low thermal conductivity. With the help of extrusion and extrusion, the compact honeycomb structure can prevent heat conduction more effectively. The thermal conductivity coefficient of XPS board is 0.028/m.k, and it has the characteristics of high thermal resistance and low linear expansion rate.The thermal conductivity is far lower than other thermal insulation materials.Such as EPS board, foam polyurethane, insulation mortar, perlite and so on.In the middle of the other and PU insulation material sandwich.
The third layer: FRP panel.