根据二氧化碳既不能燃烧,也不能支持燃烧的特性,人们研制出了各种各样的二氧化碳灭火器,包括泡沫灭火器、干粉灭火器以及液体二氧化碳灭火器。那么,泡沫灭火器是怎样迅速把火扑灭的呢?泡沫灭火器内有两个容器,分别盛放着硫酸铝溶液和碳酸氢钠溶液两种液体。这两种溶液一旦接触,就会发生激烈的化学反应,所以平时千万不要碰倒泡沫灭火器。当需要灭火时,把泡沫灭火器倒立,让两种溶液混合在一起,两种溶液混合马上就会产生出大量的二氧化碳气体。二氧化碳的比重比空气大,一旦喷出后就落在燃烧物的表面上,起到隔绝空气 Based on the fact that carbon dioxide neither burns nor supports combustion, a variety of carbon dioxide fire extinguishers have been developed, including foam fire extinguishers, dry powder fire extinguishers, and liquid carbon dioxide fire extinguishers. So, how to quickly extinguish the foam fire extinguishers? Foam fire extinguishers have two containers, respectively, filled with aluminum sulfate solution and sodium bicarbonate solution of two liquids. Once the two solutions come into contact, a fierce chemical reaction will occur, so do not touch the foam fire extinguisher usually. When the need to extinguish the fire, the foam fire extinguisher upside down, so that the two solutions together, the two solutions will soon produce a large amount of carbon dioxide gas mixture. The proportion of carbon dioxide than the air, once jetted on the surface of the burning material, play a isolated air