Effect of polydimethylsiloxane viscosity on silica fume-based geopolymer hybrid coating for flame-retarding plywood
Abstract(#br)Hydroxyl-terminated polydimethylsiloxane (PDMS) modified silica fume-based geopolymer explores a novel challenging and interesting flame-retardant hybrid coating, and the effect of PDMS viscosity on the flame resistance and microstructure is investigated firstly. The optimum kinetic viscosity of PDMS is estimated as 350 cps according to the results of cone calorimeter (CC), which imparts a 50% decreased fire growth index (FGI) with the fire performance index (FPI) of 3.80 s·m 2 ·kW −1 to the hybrid coating.