The flame retardant performance of EPS molded polystyrene insulation board is one of the important indicators for evaluating its safety. The following is a detailed analysis of the flame retardant performance of EPS molded polystyrene insulation board:
1. Classification of flame retardant grades
The flame retardant grades of EPS molded polystyrene insulation board are usually divided into three grades: B1, B2 and B3. These three grades represent different combustion performances:
Grade B1: It belongs to the flame-retardant building material, its combustion performance is good, and it is not easy to burn. When burning, the B1-grade EPS molded polystyrene insulation board will not produce open flames, and there is less smoke, which is conducive to personnel evacuation and fire rescue. Therefore, B1-grade EPS molded polystyrene insulation board is usually used in places with high requirements for fire protection levels, such as high-rise buildings and commercial buildings.
Grade B2: It belongs to the combustible building material, its combustion performance is poor, and it is flammable. When burning, the B2-grade EPS molded polystyrene insulation board will produce open flames and a large amount of toxic smoke, posing a serious threat to personnel and buildings. B2-grade EPS molded polystyrene insulation board is usually used in places with low fire protection requirements such as residences and office buildings.
B3-grade: It is a flammable building material with the worst combustion performance and is extremely easy to burn. When burning, B3-grade EPS molded polystyrene insulation board will produce a large amount of toxic smoke and flames, causing great harm to personnel and buildings. Therefore, B3-grade EPS molded polystyrene insulation board is usually not suitable for building insulation.
2. Flame retardant performance characteristics
EPS molded polystyrene insulation board has the following characteristics in terms of flame retardant performance:
Polystyrene self-extinguishing: The main component of EPS board, polystyrene, has the characteristic of self-extinguishing. This means that after the fire source disappears, the EPS board can stop burning by itself, thereby slowing down the spread of the fire to a certain extent.
Fire protection level can reach B1: Through specific production processes and additives, the fire protection level of EPS molded polystyrene insulation board can reach B1, with certain fire protection performance.
Use with other fireproof materials: Although EPS molded polystyrene insulation board has certain fireproof performance, in actual applications, in order to further improve fire safety, it is usually used in combination with other Class A fireproof materials (such as rock wool strips) as fireproof isolation belts.
In summary, the flame retardant performance of EPS molded polystyrene insulation board varies according to the grade. When choosing EPS molded polystyrene insulation board, the appropriate flame retardant grade should be selected according to the actual needs of the building and the fire protection grade requirements. At the same time, in actual applications, other fire prevention measures need to be taken to ensure the safety of the building.
