新型细水雾添加剂的制备及其灭火性能评价

Study on concoction and water mist fire suppression performance of new composite additives

在研究传统细水雾添加剂的基础上,取长补短,采用物理工艺制备出新型复合添加剂,针对典型火源（酒精池火、煤油池火与木垛火）,改变添加剂浓度开展了一系列灭火实验。结果表明：新型复合添加剂显著增强了细水雾的灭火性能,可提高灭火时间5-8倍。随着细水雾中添加剂含量的不断增加,油池火的灭火时间呈现出先快速下降,而后略微增长的趋势;而木垛火的灭火时间表现为平缓下降,并趋于稳定。含新型复合添加剂的细水雾灭火是物理化学复合作用机制,但主导灭火机理是燃料表面的冷却与隔离作用。

Water mists for fire suppression and control have widely received considerable attention as one of the potential methods for halon replacement.A new composite additive was concocted and its effectiveness to water mist＇s fire suppression performance was investigated through the base of ethanol fire,diesel fire and wood crib fire.Results showed that this additive can greatly improve the fire suppression efficiency of water mist and shorten the extinguishing time remarkably.The fire suppression mechanism of water mist with this additive was combined with physical and chemical effect.However,the surface cooling and fuel isolation were considered to be the crucial suppression mechanism.