• by admin
• 2024-08-28

PU Sandwich Panel lnsulation Panels

PU sandwich panel, also known as polyurethane sandwich panel, is widely used in the field of building decoration, especially in industrial plants and roof maintenance systems. Its insulation characteristics are mainly reflected in the following aspects:

1. Extremely low thermal conductivity

Polyurethane rigid foam, as the main insulation material for PU sandwich panels, has an extremely low thermal conductivity. Specifically, its thermal conductivity is usually in the range of 0.02-0.024 W/(m · K), which is much lower than traditional insulation materials such as XPS (extruded polystyrene board) and EPS (molded polystyrene board). Therefore, PU sandwich panels can more effectively prevent heat transfer and achieve excellent insulation effects.

2. Efficient thermal insulation performance

Due to the closed cell structure and high thermal resistance of polyurethane rigid foam, PU sandwich panels perform well in thermal insulation. This structure greatly suppresses air convection inside the board, thereby reducing heat loss. At the same time, the uniform and fine pores of polyurethane rigid foam further enhance its thermal insulation ability. Therefore, keeping indoors warm in winter and preventing outdoor heat from entering indoors in summer can help save energy and reduce emissions.

3. Advantages of insulation layer thickness

Compared with traditional insulation materials, PU sandwich panels require a thinner insulation layer thickness to achieve the same insulation effect. For example, in the North China region, if the energy-saving standard of 65% is required, when using PU insulation, the insulation layer thickness only needs to be 30mm, while EPS needs to be 80mm and XPS needs to be 60mm (considering the factor of gaps in the cavity). This advantage not only saves material costs, but also reduces the weight and thickness of buildings, improving space utilization.

4. Comprehensive insulation effect

PU sandwich panels not only have good insulation performance, but also have good waterproof and moisture-proof properties. Its closed cell structure makes the water absorption rate extremely low, effectively preventing the influence of moisture infiltration on the insulation effect. At the same time, the surface of the board is usually made of weather resistant materials (such as fiberglass), which can resist the erosion of harsh environments such as ultraviolet radiation and acid rain, and maintain long-term insulation effect.

In summary, PU sandwich panels have become a highly favored insulation material in the field of building decoration due to their extremely low thermal conductivity, efficient thermal insulation performance, advantages in insulation layer thickness, and comprehensive insulation effect. Its excellent insulation properties not only help improve the energy-saving performance of buildings, but also reduce operating costs and improve living comfort.