Fire resistance rating of aluminum composite panels

The fire resistance rating of aluminum composite panels is a crucial indicator of their fire performance. According to the national standard GB/T8624-2012 "Classification of Burning Performance of Building Materials," the fire resistance ratings of aluminum composite panels are divided into the following levels:

1. B1: Flame-retardant material

2. B2: Combustible material

3. B3: Flammable material

Among them, B1 is the nationally mandated standard for building decoration. Some special locations, such as high-rise buildings, hotels, and hospitals, have higher fire resistance requirements and typically require the use of B1-level or higher aluminum composite panels.

The following methods can improve the fire resistance rating of aluminum composite panels:

1. Using flame-retardant core materials: The core material of aluminum composite panels can be either flame-retardant or non-flame-retardant. Using flame-retardant core materials can effectively improve the fire resistance rating of aluminum composite panels.

2. Adding a fire-retardant coating: Applying a fire-retardant coating to the surface of the aluminum composite panel can improve its fire resistance rating.

3. Thickened aluminum plate: Increasing the thickness of the aluminum plate can also improve the fire resistance rating of aluminum-plastic composite panels.