Basic Fire Resistance of Rock Wool Sandwich Panel Production Line

The rock wool sandwich panel production line is an automated production line used to produce sandwich panels. It consists of processes such as feeding, mixing, liquid injection, stirring, molding, curing, and cutting. The rock wool sandwich panel production line can produce both polyurethane sandwich panels and rock wool sandwich panels, with high production efficiency and a high degree of automation. As a commonly used building insulation material, the fire resistance performance of rock wool sandwich panels is an important indicator of building safety. This article provides a detailed introduction to the fire resistance rating of rock wool sandwich panels.

Basic Fire Resistance Performance of Rock Wool Sandwich Panels

Rock wool sandwich panels are made of rock wool as the core material, covered on both sides with metal plates such as color steel plates, and produced on the rock wool sandwich panel production line. Rock wool, as a non-combustible material, has a fire resistance capability exceeding 1000 degrees Celsius. According to measurements by the Italian authoritative institution Istituto Giordano S.P.A, the fire resistance limits of rock wool sandwich panels and wall panels vary, as detailed below:

• For 100mm thick rock wool sandwich panels, the fire resistance limit is 120 minutes.

  
  

• For 75mm thick rock wool sandwich panels, the fire resistance limit is 60 minutes.

  
  

• For 50mm thick rock wool sandwich panels, the fire resistance limit is 30 minutes.

  
  

• For 50-70-100mm thick rock wool panels, the fire resistance rating is 0/1 level, indicating that the fire resistance ratings are ranked from high to low as 0, 1 level.

  
  

It's important to note that the fire resistance rating of rock wool sandwich panels produced on the rock wool sandwich panel production line is not fixed and can be influenced by factors such as panel thickness and rock wool density. For example, a 100mm thickness with a density of 80kg/m³ has a fire resistance time of 5 hours; a 100mm thickness with a density of 110kg/m³ has a fire resistance time of 2 hours; a 100mm thickness with a density of 128kg/m³ has a fire resistance time exceeding 2 hours.

Comparison of Fire Resistance of Rock Wool Sandwich Panels with Other Building Materials

When comparing the fire resistance performance of rock wool sandwich panels with other building materials, we can reference general fire resistance limit data of building components. For example, the fire resistance limit of ordinary clay brick walls and reinforced concrete walls is proportional to their thickness, and the fire resistance limit of aerated concrete walls is also roughly proportional to their thickness.

In summary, the fire resistance rating of rock wool sandwich panels produced on the rock wool sandwich panel production line can reach Class A non-combustible material. Its fire resistance limit can vary based on different thicknesses and rock wool densities, typically ranging from a few minutes to several tens of minutes. When selecting rock wool sandwich panels, it is necessary to determine the appropriate fire resistance rating based on the specific usage environment and requirements.