Excellent fire resistance is an important reason why sandwich panels can become common building materials today. Since ancient times, fire has been the most common and terrifying disaster in human society. Even now with the development of science and technology, we have not been able to completely eliminate the occurrence of fires. All kinds of buildings are important places for human life and work. Therefore, we also have many requirements for the fire resistance of buildings. The same is true of sandwich panels as an important building material.
The core material will influence the fire resistance of the sandwich panel. At present, the mainstream core materials of sandwich panels are rock wool, polyurethane and EPS foam. The fire rating of sandwich panels is mainly related to the fire resistance of these materials.
Fire resistance of sandwich panels
Among these products, rock wool sandwich panels have the strongest fire resistance. Rock wool is essentially a stone, has a certain flame retardant ability, and can withstand long-term burning. Rock wool sandwich panels have a Class A fire rating and a service life of over 15 years. The sandwich panel of rock wool can last for 6 hours under a flame of 700 degrees.
The fire resistance of polyurethane sandwich panel is slightly inferior, and the fire resistance is Class B1. Polyurethane materials are flammable, but after adding flame retardant, they have a certain fire resistance. When the polyurethane sandwich panel is cauterized by the flame, it will not exacerbate the spread of the fire. When it leaves the flame, the polyurethane sandwich panel will stop burning.
The fire resistance of EPS sandwich panels is the worst. Such materials are rarely used in buildings with high fire protection requirements.
Harbin Dongan Building Sheets Company is a leading manufacturer of building sandwich panel in China. Dongan Company attaches great importance to product quality to ensure that the fire resistance of sandwich panel meets the needs of the industry.
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