rubber-rocket

Firework displays extensively belongs to the class of explosives used worldwide for celebration of various festivals. They are also termed as ‘pyrotechnic devices’. They are usually made up of a pasteboard tube or simply a paper and encased with an appropriate combusting material, which are generally pyrotechnic ‘stars’. An appreciable number of such symmetric tubes are assorted together, bundled up and designed into a firework displays that produces significant light and sound effects. Sky rocket is the most popular form of a firework. The two classes of fireworks are ground and the aerial type, although the former is less popular commercially than the latter.

The bright vibrant colors that are witnessed during a Firework displays are aided by the pyrotechnic stars, producing an intense spark of light upon ignition. The five basic components that are used in the designing of such stars are mainly the fuel, oxidizer, color generating chemicals, chlorine donor and a binder. The fuel is to facilitate combustion and an oxidizer is to generate oxygen, thus aiding the combustion process of the respective fuel. A chlorine donor intensifies the color of the flame while the binder is so designed to effectively hold all pellets together in one place. An ‘ideal’ colorant must only be used as it provides an intense and pure flame of the specific color when added in a moderate amount.