Flaming combustion is a kind of chain reaction. The elding molecules are activated by the high temperature and then formed into active radicles with help of oxygen. Depending on the spread action of the active radicles, combustion keeps on going. While the super-fine agent meets the flame, extinguishing materials seize these active radicles rapidly and this makes the active radicles' expending velocity bigger than producing. As the exhausting of active radicles, the chain action stops and the fires die.
• Strong asphyxiant action to the surface combustion
There is an extremely good velocity and efficiency in super-fine agent's extinguishing to the surface combustions and also the smoulders on the surfaces of solid materials. When the super-fine agent meets the flaming surfaces, a series of chemic-reaction begins to cover the flaming surface with a glass-like layer. For the surfaces having been isolated from oxygen, the fires die.
• The insulation and cooling action to heat radiation
When using super-fine agent, the dense powders are mixed together with the flames to reduce the endothermic reactions as well as to absorb the heat. Then, inert gases such as carbon dioxide or vapors released by Concomitant decomposition reactions dilute the oxygen concentration and weaken combustion reaction.
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