Polyurethane sandwich panels are polyurethane thermal insulation sandwich panels for buildings, also known as impermeable sandwich roof panels, polyurethane rigid foam insulation panels, polyurethane composite panels, PU panels, etc. It is a kind of high efficient energy-saving building envelope material with wide use and great potential, and it is also a new type of energy-saving board advocated and promoted by the Ministry of Construction of the People's Republic of China. The building material is a composite board with polyurethane hard foam as the thermal insulation layer, which is mainly used in industrial kitchens, logistics warehouses, roofs of integrated houses, and maintenance systems.
The polyurethane sandwich panel has a beautiful appearance and good overall effect. It integrates load-bearing, thermal insulation, fire prevention and waterproof, and does not need secondary decoration. It is fast and convenient to install, has a short construction period, and has good comprehensive benefits. It has a good cost performance advantage. It is a widely used and potential efficient energy-saving building envelope material, and is also a new type of energy-saving panel advocated and promoted by the Ministry of Construction.
Polyurethane sandwich panels can be mainly applied to the roofs and exterior walls of public buildings with large space needs, such as: mechanisms, waiting halls of stations, stadiums, theaters and auditoriums, exhibition halls and convention centers, museums, etc. Public buildings have a series of characteristics that require more space, indoor air conditioning, fire protection, etc. than industrial plants. Such buildings mostly adopt the roof truss structure of grid or pipe truss. Therefore, the materials of roof panels have higher requirements in light weight, thermal insulation, fire safety, waterproof, sound absorption, durability, etc.
Polyurethane sandwich panels are mainly used for roofs and exterior walls of industrial plants and warehouses. In the past, the roofs of industrial plants were mostly made of prefabricated concrete slabs or asbestos slabs. With the rapid promotion of light steel structure, polyurethane sandwich panels have also replaced the above two materials with many significant advantages. At the same time of providing better heat insulation effect, sandwich panels, together with the mature light steel structure, can truly reflect a series of advantages of light steel system, such as light weight, fast and efficient, flexible layout, and so on. Therefore, sandwich panels have become the preferred scheme in single storey factory buildings. For multi-storey industrial plants, in addition to the sandwich panels used for the roof of the roof, the polyurethane sandwich panels can also be used for flexible layout of the external walls. The purpose of beautifying the building appearance can be achieved through the changeable colors and shapes of color coated panels. For industrial buildings with constant temperature and humidity requirements, sandwich panels with better thermal performance than brick walls are used as enclosure materials, which can greatly save operating costs after completion.
