Phenolic board level of fire prevention function
all know phenolic board has good fire protection features, but how good fireproof properties, no one can loose, so professional that still need to rely on professional testing and research that could be detected. Before we understand phenolic board fire rating, we have to know the fire rating. According to the national standards, fire rating can be divided into four grades, refractory bricks is building used and aluminium; The secondary fire prevention is the roof steel structure and mixed structure; Level 3 fire prevention is building roofs and brick structure; Level 4 fireproof grade is difficult to the wall of the combustion and the wall. Is simply classified as a-class non-combustible, B1 level type flame retardant, B2 type combustible, flame retardant, also called type B3 level flammable. In this way, we will have the general request for fire rating.
and we come into contact with the fire rating of phenolic plate, how experts give answer is like this. Because phenolic plate material is mainly phenolic foam, but also with other heat preservation material compound used, basic is compound national class A fire rating, which means the fire rating of compound national best, so that we can be at ease use phenolic board.