Fire-Retardation Properties of Polyurethane Nanocomposite by Filling Inorganic Nano Flame Retardant

Polyurethane nanocomposites with inorganic nano fillers for the improvement thermal stability were prepared by the urethane reaction. Fire retardation properties of polyurethane nanocomposites were investigated by cone calorimeter and limited oxygen index (LOI). Maximum heat release rate of MMT-PU and polyurethane nanocomposites were decreased as 50% than polyurethane matrix and fire retardation properties of nanocomposte had the best improvement. The LOI of polyurethane nanocomposites also were improved as filling fillers in the nanocomposites over 20. The maximum heat release rates of MMT-PU, polyurethane nanocomposites were 764, 707, , respectively and polyurethane nanocomposite exhibited the highest value of fire-retardant. We confirmed that polyurethane nanocomposites improved the fire retardation properties.