The most prominent feature of phenolic insulation board is not burn in case of open fire, carbonizes at high temperature, does not melt or shrink without dripping.
When the flame is sprayed, it does not burn, carbonizes at high temperature, does not shrink the plate surface, does not melt, and the smoke density is small, which is environmentally friendly and safe.
The fire resistance of phenolic materials can be said to be innate,It is a closed-cell foam structure, which is equivalent to many small vacuums inside, blocking the spread of heat. It is possible not to burn or shrink in the face of open flames.
Polyurethane that also reaches the index of fire-retardant grade B1 need to add a large number of flame retardants,which increases the cost of the product.In addition, there is smoldering, self-extinguishing and combustion surface shrinkage in case of fire.
Phenolic materials do not require the addition of any flame retardants, and have obvious price advantages compared with polyurethane materials of the same fire rating.
In general, the thermal insulation effect of phenolic materials is similar to that of polyurethane, and it is also a lightweight foam material.Because the fire performance and comprehensive cost performance are higher than polyurethane, many fields with high requirements for fire protection and thermal insulation will choose phenolic materials.
Post time: Mar-01-2023