EXPERIMENTAL STUDIES OF FIRE EXTINGUISHING CAPACITY OF THE WATER FILM FORMING SOLUTIONS CONTAINING FLUORINATED SURFACTANTS

On the basis of experimental studies of suppression of inflammable and flammable liquids flame by water film forming solutions it is revealed the mechanism of suppression of the flame which passes through the stage of formation of return emulsion during contact of solution drops with the burning surface. Dependence of specific consumption and suppression time of flammable and inflammable liquids flame on the flow rate of disperse streams of water solutions is received. Possibility of suppression of inflammable and flammable liquids by sprayed streams of the film-forming water solutions, containing fluorinated surfactants, is also revealed. It is experimentally established that dependence of solution specific consumption on the flow rate is pass through a minimum point nature of which is connected with existence of a contributing factor — increase of a foam layer thickness above necessary thickness possessing isolating properties.