Extruded plastic board is a material that is continuously extruded and foamed by a special process, and the hard film formed on the surface is uniform and flat, and the internal completely closed-cell foam is continuous and uniform, showing a honeycomb structure.
When buying fireproof materials needed for house decoration, consumers will generally let the business provide some material test reports, mainly to see whether the relevant values are within the qualified range, such as its flame retardant grade, which is generally A1, B1, etc., the flame retardant standard will be different for different grades, B1 grade extruded plastic board flame retardant standard is extinguished from the fire, its fire performance reaches the national B class standard, belongs to the flame retardant building materials, used in the building exterior wall, with the effect of heat preservation and fire prevention.
The flame retardant standards of B1 grade extruded plastic board are as follows:
1. It is difficult to spread in the air when exposed to open flames or high temperatures, and if burned, no burning droplets can fall down.
2. When combusting, the temperature value of flue gas should be below 200 degrees Celsius, and the smoke density level should be less than 75.
3. B1 level is the suffocation level from the fire, that is, it will be automatically extinguished after leaving the ** source, or extinguished within 10 seconds.
Extruded plastic board has excellent thermal insulation performance, and is widely used in roof insulation, wall insulation, cold storage, air conditioning, ships, solar energy, floor heating and other insulation fields. In addition, it has the characteristics of compact structure, high complete closed cell, high softness, etc., and can maintain stable physical properties even in severe cold environments.
If you want to know more about extruded plastic boards, please feel free to contact us.