Color steel phenolic composite air ducts have obvious advantages. The outer layer of ordinary composite air ducts is aluminum foil, which is double-sided aluminum foil. Flammable polyurethane foam or polystyrene foam is usually used as thermal insulation material, so although its thermal insulation performance is better than that of iron sheet air duct, its strength and fire resistance are lower than that of iron sheet air duct. The outer layer of color steel phenolic air duct is color steel plate, and the inner insulation material is phenolic foam with the best incombustibility among organic materials. Therefore, it can avoid the defects of ordinary composite air duct, which has obvious advantages: safety: it meets the fire protection B1 standard. The inner layer of color steel phenolic air duct is phenolic foam material. The test shows that the flame resistance of 100mm phenolic foam can reach more than 1 hour without being penetrated, and the smoke density is less than 3%, so it can ensure the safety of construction personnel and users. After using 0.2mm thick color steel plates on the outer surface, the ability to resist fires can be greatly enhanced. Heat one side of phenolic foam color steel air duct to 800 ℃, and the other side will not exceed 65 ℃.
Therefore, the combustion performance of the color steel phenolic air duct meets the B1 level non combustible standard and can be applied in projects with strict fire protection requirements. It can be applied to medium and high pressure systems: 0.2mm thick color steel plate is used as the outer layer of color steel phenolic air duct, which is compounded to the surface of phenolic foam material through an automatic forming machine. Its strength is far greater than the strength of single layer steel plate, which greatly enhances the pressure bearing capacity of color steel phenolic air duct, expands its application range, and can be applied to medium and high pressure systems.
environment protection
No harm to human body: the phenolic foam uses fluorine free foaming, while the polyurethane will emit a lot of ozone layer destroying substances during the foaming process, which will cause great damage to the ozone layer. Fiberglass poses a great threat to the health of workers during production and installation. When phenolic foam burns, there is no harmful gas, and the smoke density is low. During the combustion of polyurethane, cyanide gas is generated, while during the combustion of composite fiberglass duct, 2-methylacrylamide aniline is detected, which is a harmful substance. Although the inner surface of the composite fiberglass panel air duct is coated with polypropylene, glass fibers inevitably pollute the duct during processing engineering. If scattered glass fibers fall into the room with the air supply, it will inevitably pose a threat to human health. Good weather resistance, not easily damaged, and long service life: Organic plastics can age or weather under long-term natural conditions and external factors, and in severe cases, even lose their foaming performance. Under the same conditions, the aging resistance of phenolic resin is the best. In addition, the outer layer of the color steel phenolic air duct is treated with baking paint, which does not rust and is not easily damaged by external collision. Therefore, the service life of the color steel phenolic air duct can reach up to 20 years, which is significantly higher than that of ordinary composite air ducts. So in medium and high pressure systems, compared to ordinary composite air ducts, color steel phenolic composite air ducts have more obvious advantages in systems with high fire protection requirements.
Post time: Mar-27-2024