As an important part of the building fire control system, the fire performance of the smoke exhaust duct is very important. Glass wool, as a widely used thermal insulation material, is also widely used in fire exhaust ducts. Next, Utsen glass wool manufacturer will explain to you what are the requirements of glass wool for fire exhaust duct.

1, fire resistance requirements

According to the "Technical Standards for Building Smoke Control and Exhaust System", there are corresponding fire resistance requirements for smoke control and exhaust pipes set at different parts, among which the lowest fire resistance limit is 30 minutes. Therefore, the glass wool applied in the fire exhaust duct should have good fire resistance and fire resistance limit of more than 30 minutes.

2, volume weight requirements

The bulk weight of glass wool refers to the mass of glass wool per unit volume. For the glass wool of fire exhaust duct, its bulk density needs to meet certain requirements. Too light glass wool may not meet the fire resistance limit requirements; Excessive glass wool will increase the weight of the air duct, which is not conducive to installation and maintenance. At present, glass wool with a bulk weight of 48K is generally used for a fire resistance limit of 30 minutes, and glass wool with a bulk weight of 60K is used for a fire resistance limit of 60 minutes.

3, thickness requirements

The thermal insulation, fire prevention and other properties of glass wool have a certain relationship with its thickness. According to the relevant regulations, the thickness of the non-combustible material wrapped in the smoke exhaust duct is not less than 50mm. Therefore, the thickness of the glass wool should not be less than 50mm.

4, flame retardant requirements

In the case of fire, the rapid spread of fire will increase the disaster scope and increase the disaster loss. Therefore, the glass wool dedicated to the fire exhaust duct should have a certain flame retardant and fire spread inhibition ability, that is, in the case of fire, it can effectively prevent the spread of fire and reduce the scope of fire harm.

5. Environmental protection requirements

Glass wool as a kind of insulation material, its environmental performance can not be ignored. High-quality glass wool should be made of harmless raw materials, does not contain harmful substances, and will not release harmful gases during use. In addition, glass wool waste should be easy to recycle to reduce the burden on the environment.