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对含不同质量分数NaCl和复合添加剂细水雾的灭火时间、降温过程、以及增强机理分别进行了研究.结果表明:添加剂通过对细水雾的物理或化学强化作用,能显著提高细水雾灭火性能,缩短灭火时间,提升其灭火稳定性和降温效果;进一步的增强机理分析认为NaCl主要通过捕获自由基,起到抑制燃烧链式反应的作用;而复合添加剂则是通过对水的物理改性,实现加速雾滴吸热蒸发、促进水在油面的铺展和表层汽油的乳化、以及提高水的起泡与稳泡能力等目的.
The fire extinguishing time, cooling process and enhancing mechanism of water mist with different mass fractions of NaCl and composite additives were studied respectively.The results showed that additives could significantly increase the water mist fire extinguishment by physical or chemical strengthening of water mist Performance, and shorten the time of fire extinguishing, and enhance its fire extinguishing stability and cooling effect; further enhanced mechanism analysis that NaCl mainly through the capture of free radicals, play a role in inhibiting the combustion chain reaction; and composite additives through water physical modification , To achieve accelerated droplet endothermic evaporation, to promote the spread of water in the oil surface and the surface of gasoline emulsification, and to improve the water blistering and foam stability and other purposes.