Use of Ammonium Sulphamate as Flame Retardant Paint Additive

Abstract

Flame retardant paints were prepared by incorporating ammonium sulphamate into emulsion and gloss paints. Wood splints were coated with these paints and the effects on ignition time (IT), flame propagation rate (FPR) and after-glow time (AGT) were studied. It was observed that whereas time of ignition was extended, flame propagation rate and after-glow time were drastically reduced. These observations were attributable to the fact that at flaming heat, the additive decomposes into non-combustible gases which reduced oxygen concentration in the combustion zone, ie, paints act as flame retardant by the gas phase mechanism.