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Ansheng Explains the Explosion Protection Principle of Barrier Explosion-proof Materials

Source:Ansheng  Date:2018-04-26
1. Physical principle; flame hindered effect, flame propagation is similar to fluid flow. One of the factors that affect the flame propagation speed is its resistance to propagation. The porosity of the explosion suppressing material determines the resistance. Slower, the pores are small enough to stop the flame propagation. The effect of this flame propagation being hindered by the pores of the material is called the material barrier.
Heat conduction effect
During the propagation of the explosion flame, as the heat is rapidly absorbed and dissipated by the material with a large surface area, the flame propagation intensity decreases, so the energy decreases until it goes out.
2. Chemical explanation
Free radicals 『wall adsorption effect』
Mixed explosion is a chain reaction of free radicals. The reaction speed is limited by the number of free radicals in a unit volume. Free radicals can be adsorbed by the 'impurity' and 'wall' materials on the wall surface. This 'wall wall adsorption' effect is reduced. The number of free radicals per unit volume. The larger the surface area of ​​the 'wall', the more 'impurities', the more chances of free radicals 'absorbing the wall'. Therefore, the less the number of free radicals per unit volume, the less the number of free radicals participating in the combustion reaction, which inhibits combustion The speed of the explosive reaction until the reaction is interrupted.
Cooling effect
The heat generated by tritium combustion can further increase the reaction temperature and speed up the reaction until deflagration and explosion. The thermal conductivity of the barrier explosion-proof material has the effect of dissipating heat and lowering the temperature. This 'cooling effect' suppresses the increase in temperature and the acceleration of the reaction speed, making it impossible to form a deflagration.
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