Fire performance of commonly used building exterior wall insulation materials in my country

At present, the commonly used building exterior wall insulation materials in my country mainly include expanded polystyrene board (eps), extruded polystyrene board (xps), polyurethane (pu), rubber powder polystyrene particles, and inorganic vitrified microspheres and other insulation materials. EPS and XPS are materials with Class B combustion properties, preferably Class B1. This insulation material melts and…