Title : Impact of nano in explosives with reference to fireworks chemicals
Abstract:
Pyrotechnic devices, commonly known as fireworks, have a huge popularity. The sonic effect produced by the fireworks mainly depends upon the chemical composition of the mixtures and the particle size. The chemical composition for the products has fixed by Petroleum and Explosives Safety Organisation (PESO), Govt. of India. At present the particle size of the chemical composition is at the micron level. However, by converting the composition into nano size, the volume of mixture used will be greatly reduced without compromising the sound level produced. The flash powder composition is used in the fireworks industry to manufacture the firecrackers which consist of potassium nitrate, aluminium and sulphur in 75 µm range. This study focuses on the synthesis of nano and micro flash powders with different trials of composition. Thermal analysis and noise level analysis of the crackers which are manufactured by nano powders are presented. Concurrently, the major risk in using nano size powders is that it is a fire hazard. In this talk, the pros and cons of using nano powders in the manufacture of fireworks have been analyzed. Also, impact sensitivity and friction sensitivity of the nano flash powder are analysed. Minimum ignition energy also presented. Nano sized Boron can be safely used which is the alternative for nano Aluminium. In this talk the advantages of Boron also to be presented.
