Study on Flame Retardancy and Mechanism of Talc Composite Foams

Under high temperature, aqueous film forming foam extinguishing agent has poor flame retardancy and low fire efficiency. In order to solve this problem, talc was introduced into form composite foam. The resistance properties of the were studied. results showed that had good retardant resistance. when concentration reached 40 g/100 ml, 50% liquid separation time 21.1 min. fuel burning in anti tank did not ignite gasoline oil pan, burned out at 51.5 It related structure talc. Due introduction talc, viscosity increased. network important improved stability Talc powder formed a dense layer covering surface, which effectively isolated from air.