Development of halon replacements and their evaluation as fire extinguishers

摘要

This program treated the evaluation of the fire extinguishing ability and the investigation of fire extinguishing mechanism of perfluoroalkylamines. It was found that perfluoroalkylamines, containing no bromine atom as the requisite atom forimparting high fire extinguishing ability, showed good fire extinguishing ability. For the explanation of this results, special action of CF{sub}3-radical generated from perfluoroalkylamines on the fire suppression mechanism was considered. By studyingthe computational chemistry, new fire suppression mechanism by CF{sub}3-radical was found: CF{sub}3-radical behaves catalytically as a radical scavenger for hydrogen and hydroxyl radicals in flame just like the role by a bromine radical generated fromHalons.