Pressure-induced explosion of physical changes, such as: steam boilers, pressure cookers, tires, balloons, thermos flasks, beer bottles, etc. explosion;

Combustion-induced explosion of chemical changes, such as: gasoline, LPG, H2, CO, CH4, gunpowder, firecrackers, flour powder explosion.

1, physical explosion

Physical explosion is caused by physical changes (temperature, volume and pressure and other factors) caused by the explosion before and after the explosion, the nature of the explosive substance and chemical composition are not changed.

2, chemical explosion

Chemical explosion is caused by chemical changes. Chemical explosion of substances, whether combustible substances and air mixture, or explosive substances (such as explosives), are a relatively unstable system, in the outside world under the action of a certain intensity of energy, can produce a violent exothermic reaction, resulting in high temperature, high pressure and shock waves, thus causing intense destruction.

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