u200bWhat are the general requirements of users for the cleanliness of fabric air ducts?

With the passage of time, people's requirements for the cleanliness of fabric ducts and air ducts and the requirements for saving equipment and materials have gradually increased. Existing fabric air ducts and spiral air ducts are widely used, which meet the functional requirements of ventilation, air conditioning and dust removal. At present, the main forms of metal air ducts used in air conditioning and ventilation projects are: circular air ducts, fabric air ducts and air ducts. The circular air duct has high strength and few consumables, but the processing technology is more complicated and takes up a lot of space; the fabric air duct is easy to arrange and easy to process, so it is more commonly used. There is also a mechanized production system made of spirally wound steel strips, with round and rectangular shapes. In order to save space, a large number of fabric ducts and ducts are made into flat circles. Fabric ducts are generally divided into three categories according to their materials in the market: galvanized fabric ducts, fabric ducts, fabric ducts, and composite fabric ducts. At present, the widely used fabric air ducts on the market are galvanized sheets. The galvanized sheet fabric duct is basically the characteristics of the fabric duct, but the price is relatively only two-thirds or lower than the fabric duct. Composite fabric air ducts are generally used in places where the external environment is relatively common and the requirements for air ducts are not too high. In humid air, a dense basic zinc carbonate film is formed on the zinc surface. The fabric air duct is mainly coated with a layer of zinc on the iron sheet of the air duct to protect the iron sheet. The protective and decorative properties of zinc coating can be improved after passivation treatment, dyeing or coating with light protectant. Poor durability of fabric ducts and ducts The ratio of magnesium chloride and magnesium oxide molar weight is scientifically based, and the dosage of magnesium chloride should be determined according to the determination of the active magnesium content of magnesium oxide. However, the manufacturer of unqualified products does not know the determination of the active magnesium content of magnesium oxide, nor the reasonable value of the molar ratio. I only know that magnesium oxide is added with brine, and it becomes an air duct after curing. The residual chloride ion content of the air duct is large, and it is easy to return to halogen in the humid air environment, the softening coefficient is low, and the service life is short.

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