Research on Fire Retardant Coatings Coutaining Expandable Graphite Using CONE Calorimeter

The flame retardant performance, emission of toxic fumes, flame retardant mechanism of new fire retardant coatings made from expandable graphite contrasting are compared with those of traditional intumescent fire (retardant) coatings by various parameters such as MLR, HRR, EHC, SEA, CO2, CO and TTI. These parameters were measured by Cone calorimeter with irradiance of 20kW/m~2. Results show that the new coatings are superior to the traditional intumescent fire retardant coatings in the flame retardant performance, fire-resistant time, and (emission) of toxic fumes, due to the fact that the new coatings involve more char with good heat stability in the course of degradation.