对于火灾，即使是的消防员也很头疼，燃烧的产品大多是易燃易爆产品，甚是有毒有害产品。普通的灭火剂是行不通的，事实上泡沫灭火剂起到的灭火作用是非常有效的，下面来讲讲主要机理。

For fire, even professional firefighters have a headache. Most of the burning products are flammable and explosive products, even toxic and harmful products. Ordinary fire extinguishing agents are not feasible. In fact, foam fire extinguishing agents are very effective in extinguishing fires. Here are the main mechanisms.

凡能用水预先溶解并能通过机械方法或化学反应产生灭火泡沫的灭火剂称为泡沫灭火剂。广义而言，它也是通过在水中添加各种成分制成的。根据泡沫的形成机理，泡沫灭火剂可分为化学泡沫灭火剂和空气泡沫灭火剂。化学泡沫是由两种药剂的水溶液发生化学反应而产生的，泡沫中所含的气体为二氧化碳。

Any fire extinguishing agent that can be pre dissolved with water and can produce fire extinguishing foam through mechanical methods or chemical reactions is called foam fire extinguishing agent. Broadly speaking, it is also made by adding various components to water. According to the formation mechanism of foam, foam extinguishing agent can be divided into chemical foam extinguishing agent and air foam extinguishing agent. Chemical foam is produced by the chemical reaction of the aqueous solution of two agents. The gas contained in foam is carbon dioxide.

泡沫灭火剂的灭火效果表现在以下几个方面：一是阻隔作用。由灭火泡沫在燃烧材料表面形成的泡沫覆盖层，可将燃烧表面与空气隔离。泡沫层对燃烧物表面进行密封，可阻挡火焰对燃烧物的热辐射，防止燃烧物蒸发或热解，使材料成为可燃物。气体难以进入燃烧区；

The fire extinguishing effect of foam extinguishing agent is shown in the following aspects: first, barrier effect. The foam covering layer formed by the fire foam on the surface of the burning material can isolate the burning surface from the air. The foam layer seals the surface of the combustor, which can block the thermal radiation of the flame to the combustor, prevent the evaporation or pyrolysis of the combustor, and make the material combustible. It is difficult for gas to enter the combustion area;

二是降温。从气泡中析出的液体对燃烧表面有冷却作用；三是稀释效应。泡沫灭火剂产生的泡沫被加热蒸发，产生的水蒸气具有稀释燃烧区氧气浓度的作用。但是，不同类型的泡沫适用范围是不同的。说明几种泡沫液体灭火剂的区别。

Second, cooling. The liquid precipitated from the bubble can cool the combustion surface; Third, dilution effect. The foam produced by foam extinguishing agent is heated and evaporated, and the water vapor produced has the effect of diluting the oxygen concentration in the combustion area. However, the application scope of different types of foam is different. Firstly, the differences of several foam liquid fire extinguishing agents are explained.

蛋白泡沫灭火剂适用于扑救油类和石油产品火灾，如汽油、煤油、柴油、原油、重油、沥青、石蜡等火灾；动植物油火灾；由于蛋白质泡沫具有良好的附着力。还具有一定的降温和润湿作用，蛋白泡沫稳定性好，因此常用于防止火灾的发生和蔓延。可以用蛋白泡沫覆盖防火，然后采取其他措施。

Protein foam extinguishing agent is suitable for extinguishing oil and petroleum product fires, such as gasoline, kerosene, diesel, crude oil, heavy oil, asphalt, paraffin and other fires; Animal and vegetable oil fire; Because protein foam has good adhesion. It also has certain cooling and wetting effects, and protein foam has good stability, so it is often used to prevent the occurrence and spread of fire. The fire protection can be covered with protein foam, and then other measures can be taken.

蛋白泡沫灭火剂不能用于扑救酒精、醛、酰基等水溶性易燃液体火灾，也不能用于扑救加酒精的汽油（酒精含量在10%以上）、电气、煤气等火灾；可用于喷洒灭火油罐火灾；不能与一般干粉灭火剂并用。

Protein foam extinguishing agent can not be used to extinguish the fire of water-soluble flammable liquids such as alcohol, aldehyde and acyl, nor can it be used to extinguish the fire of gasoline with alcohol (alcohol content above 10%), electrical, gas and other fires; It can be used to spray and extinguish oil tank fires; It cannot be used together with ordinary dry powder extinguishing agent.

水成膜泡沫灭火剂主要由氟碳表面活性剂、烃类表面活性剂、稳定剂等添加剂和水组成。水成膜泡沫灭火剂适用于一般低膨胀泡沫灭火设备，主要用于灭火一般不溶于水溶性易燃易燃液体火灾，能迅速控制火势蔓延，也可与干粉灭火剂配合使用。

Aqueous film-forming foam extinguishing agent is mainly composed of fluorocarbon surfactant, hydrocarbon surfactant, stabilizer and other additives and water. Aqueous film-forming foam extinguishing agent is applicable to general low expansion foam extinguishing equipment. It is mainly used to extinguish fires that are generally insoluble in water-soluble flammable liquid. It can quickly control the spread of fire, and can also be used in conjunction with dry powder extinguishing agent.

川消提醒大家，灭火主要依靠泡沫和水膜的双重作用，泡沫起主导作用。也可采用潜喷法扑救油罐火灾，扑灭流动液体火灾的效果更好。但泡沫不够稳定，消失快，对油面的密封时间和阻燃时间也短，所以防止复燃和隔离热液面的性能不如蛋白泡沫和氟蛋白泡沫。

Chuanxiao reminds us that fire extinguishing mainly depends on the dual functions of foam and water film, and foam plays a leading role. The submerged spraying method can also be used to extinguish the oil tank fire, and the effect of extinguishing the flowing liquid fire is better. However, the foam is not stable enough, disappears quickly, and the sealing time and flame retardant time to the oil surface are also short. Therefore, the performance of preventing re ignition and isolating the hot liquid level is not as good as that of protein foam and fluoroprotein foam.

川消讲解泡沫灭火剂灭火的主要机理的相关内容便是如此了，如果您对这方面有兴趣了解更多的话，那就关注我们的网站www.cx-fire.com进行咨询或者直接联系我们购买相关产品。

This is the content about the main mechanism of foam extinguishing agent explained by CFX. If you are interested in learning more about this aspect, please follow our website www.cx-fire Com or contact us directly to buy relevant products.