Today, see the Christine plant more broken off the German vouchers fan of the CCTV news channel reported that the district energy-saving transformation, the workers are more tense, the first use is to meet the A-class thermal insulation materials, later said to be polyurethane insulation board, and then use the fire A little moment on the smoke, and quickly took the fire machine, then smoke did not burn out, repeated several times did not dare how, this insulation board really fire? More
Polyurethane insulation board after flame retardant treatment up to B1 level, is unable to achieve A pole fire conditions. Polyurethane is a good performance of synthetic materials, it has a higher strength, thermal conductivity, etc., mainly used for thermal insulation materials, followed by structural materials. Combustion performance for the A-class insulation materials: rock wool, glass wool, foam glass, foam ceramic, foam cement, closed-cell perlite and so on. Combustion performance for the B1 level of insulation materials: special treatment of extruded polystyrene board (XPS) / special treatment of polyurethane (PU), phenolic, powder polystyrene particles. Burning properties of B2 grade insulation materials: molded polystyrene board (EPS), extruded polystyrene board (XPS), polyurethane (PU), polyethylene (PE) and so on.
Polyurethane insulation board can reach B level.
It is from the fire self-extinguishing, can not be a level, but it is more than any external wall of the factory to break the board of the Russian coupons fan temperature material energy efficiency are high are expensive (I do want to do the polyurethane pipe insulation name)
China's national standard GB8624-97 will burn the performance of building materials are divided into the following grades A: non-flammable Building materials: almost no combustion of the material. B1 level: flame retardant building materials: flame retardant materials have a better flame retardant effect. In the air, there is no fire in the case of high temperature, it is not easy to spread quickly, and when the fire is removed, the burning stops immediately. B2 grade: flammable building materials: combustible materials have a certain role in flame retardant. In the air in case of fire or under high temperature will immediately fire burning, easy to lead to the spread of fire, such as wooden pillars, wooden truss, wooden beams, wooden stairs and so on. B3 level: flammable Building materials: no any flame retardant effect, easy to burn, fire risk is great. Polyurethane insulation board after flame retardant treatment up to B1 level.
