Experimental study of thermal breakdown products from halogenated extinguishing agents

摘要: Thermal breakdown products from four different fire extinguishing agents have been analysed. The studied were: bromotrifluoromethane (Halon 1301), pentafluoroethane (HFC 125), heptafluoropropane 227ea) and dodecafluoro-2-methyl-pentane-3-one (C6F-ketone). In the tests, agent was introduced into a propane flame in diffusion burner. combustion were analysed using both conventional IR-techniques FTIR. It could be concluded that for all takes part process resulting production of CO CO2, which also confirmed by increase smoke with increasing amounts flame. Production HF COF2 found experiments agents. Halon 1301, HBr determined. main fraction fluorine ends up as HFC 227ea 125 at lower relative application rates. When approaching concentrations, recovered increases, but total recovery fluorine, including remaining is various organic products. C6F-ketone compared to 125. There clear difference 1301 where an almost quantitative or found. additionally contains bromine, which, large extent, HBr.