Phenolic Sandwich Sandwich duct phenolic duct based on phenolic foam resin, curing agent, foaming agent and inorganic chemical reaction of phenolic foam core, composite antibacterial coating one side of aluminum foil, the other side of the composite composite sandwich panels of various colors of color plate made of duct processing production. The main features of an inner duct surface smooth, colorful outer surface, particularly suitable for surface mounted, and a three-dimensional sense of comfort; 2, the duct system after the detection of the national authorities, non-combustible Class A composite material products, smoke-free, non-toxic, high-rise building fire in line with national standards; 3, good insulation properties, composite duct system uses thermal count below 0.0220w / mk high quality sheet strength and professional standard accessories, supplemented by professional Tools and excellent construction technology, air leakage less than 0.78m3 / h · m (750pa), the highest energy efficiency of over 50%, is an industry leader, can greatly reduce the heat loss of air conditioning; 4, light weight, high strength, especially duct outer surface is very hard, impact resistance; 5, easy to install, short production cycle; 6, duct insulation integration, without reserve storey space, after the scene finished, hanging directly to the surface, installation, can reduce building The story requires, saving the construction cost, while also saving the ceiling space; 7, with excellent sound insulation, noise reduction; 8, green: All materials are non-toxic and tasteless accessories level of green products, ensure that the air fresh, comfortable and pleasant; performance advantages phenolic composite duct central air supply duct is usually the inner layer of the traditional metal or fiberglass, wrapped in insulation materials, the outermost were wrapped with aluminum foil, which makes the air hose since the major construction and installation labor costs time-consuming, poor appearance, low air-tightness, high energy consumption. Compared with traditional wind pipe, duct phenolic compound has the following advantages: 1. Good insulation, air conditioning can significantly reduce heat loss coefficient of thermal conductivity of phenolic composite duct is 0.016 ~ 0.036W / (m · k), and galvanized steel duct and thermal conductivity is much larger fiberglass duct. In addition, specific phenolic composite duct connection ensures excellent air tightness of ventilation systems, nearly 8 times the galvanized steel duct. Data show that in conveying the same heat (cold) amount, galvanized steel duct heat loss of 15% heat loss fiberglass duct 8%, heat loss phenolic foam insulation duct is less than 2%. 2. The muffler is good. Aluminum foil phenolic composite sandwich wall wind porous phenolic foam board interconnected, with a good performance muffler. In the central air conditioning system, the noise generated by the air conditioning unit is running at 50 ~ 79dB range pass through the air duct to form interior noise. Aluminum foil phenolic composite duct itself is a good pipe muffler, muffler cover and do not have to set up the kind of muffler silencer elbow fittings. 3. Light weight, reduce the building load, and easy to install aluminum foil phenolic composite duct light weight of approximately 1.4 kg / m, and galvanized steel duct (0.8mm thick) and fiberglass duct (3 mm thick) bulk density was 7.08 kg / m and 15 ~ 20 kg / m, which can greatly reduce the load of the building, and the installation of the duct is extremely beneficial. When you install just about every 4 m set up a stand, you can have adequate support. This carrying capacity of the stand, hanging pieces and other requirements greatly reduced, making transportation and installation is very easy. 4. durable, long life galvanized steel to rust in wet conditions easier, fiberglass is easy to aging, easily damaged, so the traditional life of the duct is not long, about 5 to 10 years, traditional duct Outsourcing The insulation layer, such as glass wool life only five years, and phenolic composite duct foil over the life of at least 20 years. Therefore, aluminum foil phenolic composite duct life is more than traditional duct life three times. In addition, the recycling rate of aluminum foil phenolic composite duct of up to 60% to 80%, while the traditional duct hardly reused. 5. Reduce storey traditional duct insulation construction site needs, thus requiring a certain height of construction, which the storey building made additional demands. Aluminum foil phenolic composite duct insulation construction site is not required, it is not necessary to reserve space for the construction, which can reduce storey building. 6. shorten the construction period foil phenolic composite duct is very light weight, easy installation and faster than traditional duct. When the duct lifting required simple hanger, a small number, almost no machinery. Making simple and completely break the traditional process, greatly shorten the construction period, the scene changes is also very convenient. According to the site is estimated that when aluminum foil phenolic composite duct installation can be installed for each worker the day 20.0 to 30.0 meters, while the traditional duct is only 4.0 to 5.0 m / (day · people), compared with traditional duct fabrication, aluminum foil phenolic compound of the wind increased productivity tube 4 to 5 times. 7. Health phenolic composite duct surface with aluminum foil seal, thus ensuring the health delivery medium, to avoid secondary pollution, and the inner-free condensate, no rust. In conventional wind pipe, glass wool and asbestos hygroscopic, absorbing insulation performance after a serious deterioration, and asbestos is a carcinogen, wool dust can irritate the skin, itchy construction workers. In addition, galvanized steel duct rust, and prone to cold bridging. 8. appearance, suitable surface mounted aluminum foil phenolic composite duct can be made into a variety of colors, beautiful, particularly suitable for surface mounted. Traditional duct surface needs work site wrapped in aluminum foil, so the effect is not very good surface mounted. 9. for a wide range of galvanized steel duct is widely used, but the high humidity low life, FRP duct in hospitals, food processing plants, there is dust in the basement and other places of high humidity requirements and use is restricted, and phenolic aluminum foil composite duct work can be widely applied to civil construction, hotels, hospitals, offices and other places special requirements.