Product Introduction of Pre-insulated Polyisocyanurate (PIR) Duct Board
I. Product Structure
The pre-insulated PIR air duct sheet adopts a unique sandwich structure. The core layer in the middle is high-density rigid polyisocyanurate foam. This foam material features an extremely fine and independent closed-cell structure, effectively preventing air convection and significantly reducing the possibility of heat transfer. Both sides are covered with aluminium foil. Common aluminium foil thicknesses include 60 microns, 80 microns and other specifications.
Aluminum foil not only provides solid physical protection for the internal PIR foam, preventing it from being damaged by external impacts, scratches, etc., but also has moisture-proof and vapor-barrier functions, further enhancing the durability and stability of the entire board.
Ii. Performance Advantages
(1).Outstanding thermal insulation performance: The thermal conductivity of PIR air duct panels is extremely low, typically ranging from 0.018 to 0.022W/(m · K). This means that heat is difficult to be conducted through the plates, which can effectively maintain the stability of the air temperature inside the air duct. Take an air conditioning supply system with 10,000 square meters of air ducts as an example. Under the same operating conditions, compared with traditional galvanized iron sheet air ducts, using PIR air duct panels can save a large amount of electricity annually, equivalent to 210,000 to 370,000 yuan.
(2).Outstanding fire resistance: PIR material itself is a thermosetting polymer and has excellent fire resistance properties. When a fire occurs, a carbonized layer will quickly form on the foam surface of the PIR air duct board. This carbonized layer acts like a solid barrier, effectively isolating the foam beneath and preventing the further spread of flames. Moreover, it does not produce harmful gases during combustion, meeting strict fire safety standards.
(3).Excellent moisture-proof and antibacterial properties: On the one hand, due to the closed-cell structure of PIR foam and the moisture-proof and vapor-barrier effect of aluminum foil, the board can effectively resist the invasion of external moisture and prevent performance degradation caused by moisture. On the other hand, the smooth-surfaced aluminum foil also has certain antibacterial properties. Especially in places with extremely high hygiene requirements, such as hospitals and food processing workshops, it can effectively inhibit bacterial growth and maintain a good air environment.
(4).High strength and lightweight characteristics: Despite the light weight of PIR air duct sheets, they possess considerable strength. It can withstand certain mechanical loads and high wind speeds, and maintain structural stability under various complex environmental conditions. This lightweight and high-strength feature not only facilitates transportation and installation but also reduces the overall load-bearing burden of the building.
Iii. Application Scenarios
(1).Commercial buildings: In shopping malls, supermarkets, hotels and other places, there are high requirements for the energy efficiency, fire safety and air quality of air conditioning and ventilation systems. PIR air duct panels can effectively reduce energy consumption and save operating costs. Meanwhile, their excellent fire resistance also provides a guarantee for the safety of personnel and property.
(2).Public buildings: such as gymnasiums, libraries, office buildings, etc., have a large flow of people and relatively enclosed Spaces. The antibacterial performance and stable heat insulation performance of PIR duct boards can ensure that the indoor air is fresh and the temperature is suitable, providing people with a comfortable activity environment.
(3).Industrial buildings: Factories, warehouses and other industrial sites have complex environments and high requirements for the durability of air ducts. PIR duct panels, with their moisture-proof and high-strength features, can adapt to various challenges in industrial environments and ensure the long-term stable operation of ventilation systems.
(4).Special places: operating rooms and wards in hospitals, food processing workshops, electronic clean rooms and other places with extremely strict requirements for air cleanliness and hygiene standards. The antibacterial performance of the smooth aluminum foil surface of PIR air duct panels, as well as their excellent heat insulation and sealing performance, can effectively meet the strict requirements for air quality in these places.
Four. Installation convenience
PIR air duct panels have demonstrated great convenience during the installation process. It is relatively light in weight, and only two workers can complete the production and installation of large-volume air ducts, greatly saving labor and time costs.
Moreover, the installation process follows a standardized procedure. Whether using a pre-insulated duct tool box or a CNC cutting machine, operations such as cutting, bending, gluing, and sealing of plates can be efficiently completed, effectively enhancing construction efficiency and shortening the project duration.
