The main task of

The main task of such means: not to give the surface of the material is ignited. Chemical protection of materials is reduced to the fact that substances that prevent the appearance of oxygen or produce carbon are added to the composition that covers the material, which does not allow the surface to ignite. Some fire retardants serve as a layer, which produces a special foam from heating, which not only does not allow to ignite, but also absorbs the foci of fire.