In exterior wall thermal insulation material fire are mainly two factors: ignition source is external factors, construction process, improve construction standards, can reduce the chance of fire; polystyrene foam insulation pipe shell and extruded polystyrene foam with this two kinds of combustible materials is the internal factors. In order to prevent the occurrence of fire, only the use of non combustible or difficult to burn the external wall insulation material, which is the most effective solution strategy.
Polystyrene foam insulation pipe fire is one of the key works in the construction process, must strengthen the operation of the workers. Usually case, the outer layers of the insulation materials the reason why the phenomenon of fire, due to a specific method for to fire workers accidental errors or irregularities caused by, many different suggestions and strategies. At present, the widespread use of exterior wall thermal insulation material is made of polystyrene foam and extruded polystyrene foam, the two materials are combustible can say, there is a corresponding fire hazard.
In the construction process, can not completely prevent the fire, for example, the process of the welding process of the spark, therefore, the construction site, there is a source of fire. Because of the fire and the fire of the two factors, can not be prohibited. Therefore, the external wall insulation material caused by the fire, in fact, is the inevitable.
Now our country's building uses the external wall exterior insulation material mainly includes two kinds: one is the polystyrene foam. The two is extruded polystyrene foam. These two kinds of data are widely used, because they have insulation, waterproof and gas well. However, through some tests found if the two no after the flame retardant chemical molecular modification, but only a local flame retardant is added in the data, once the polystyrene foam insulation pipe encountered fire, can easily lead to burn it, and in the process of combustion to generate corresponding toxic gases, influence people's life safety.
In addition, under the condition of high temperature, polystyrene foam and extruded polystyrene foam easily lead to crashing phenomenon. That is to say, has triggered a fire hazard.