kingda B1Extruded sheet

B1Extruded sheet

kingda Squeeze xps Extrusion insulation board

   kingdaThe Extrusion board is a high-density rigid foam board made of polystyrene resin and other auxiliary materials and polymers, which is heated and mixed into the catalyst at the same time, then extruded and extruded to form, which is referred to as (XPS). This unique closed cell cellular structure to support plate has a rather low water absorption (almost no absorption), low thermal conductivity, high compressive strength, ageing resistance (normal use almost no aging decomposition phenomenon).

Combustible B1 grade extrusion panels can also be lit. What is the difference between a combustible and a B2 grade board?
First of all, the above has been explained that the extruded board belongs to combustible materials, so no matter combustible B2 grade board or hard burning B1 board, in case of open flame, definitely, this is normal. But it is very important that the extruded board has a very good characteristic of self extinguishing. Moreover, the off fire self extinguishing performance of the nonflammable B1 plate is better than that of the combustible B2 grade plate. The difference between the flammable B2 class and the nonflammable B1 grade is based on the GB8624-1997 "grading method for combustion properties of building materials". In addition to the combustible B2 grade standard, the refractory B1 grade material should meet the requirements of the flue gas temperature and smoke density stipulated in the standard,. The general test of simple lighter plastic extruded board, it is difficult to see the combustible grade B2 and flame retardant obvious difference between grade B1, but at least to see a flame retardant B1 level plate after the fire than the combustible B2 grade steel flame spread length is short, the burning time is short, less smoke.