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Previous research project
1. Development of new halon alternatives
Halons are gaseous fire extinguishing agents of which use have been banned under the regulation of Montreal Protocol (1987) together with CFCs. In order to develop new Halon replacements, several polyfluoroalkylamines were synthesized and their fire-extinguishing activity was evaluated. We have found that several bromine-free perfluoroalkylamines showed good fire-extinguishing activity despite a lack of bromine in the molecule. Through an investigation on its mechanism, new fire suppression mechanism was found and named as "CF3-radical mediated suppression mechanism". It associates with the role of trifluorimethy radical in fire, in which CF3-radical fulfills just a role like that of bromine atom of halons.
CF3-radical-mediated fire suppression mechanism