Different Types of Explosives
An explosive is something capable of exploding or tending to explode.
The energy released is used in firearms, blasting, and rocket
Explosives are substances that produces a rapid, violent reaction when
exposed to heat, a strong blow or a special detonator. During the
reaction, explosives give off large amounts of gases at high pressure.
powerful blast of energy released during an explosion gives explosives
commercial and military uses. Explosives let construction workers
land away for building roads or buildings with little effort. They are
used in digging mines and to loosen the flow of oil deep beneath rock
oil wells. They blow away tunnels through mountains and send rockets
space. In war, explosives are used to damage cities, destroy ships and
airplanes, and kill enemy troops. As you see, explosives aren't always
used as harmless substances.
Explosives may be solids, liquids, or gases. However, all explosives
consist of a fuel and an oxidizer--a substance that supplies the
needed to make the fuel burn. When the most powerful explosives
a chemical reaction takes place very quickly (usually in less than a
millionth of a second). Liquids and solids change to hot gases that
with a large blast of heat and pressure. The higher the pressure, the
powerful the explosion is.
There are four main types of chemical explosives--primary explosives,
high explosives, blasting agents, and low explosives.
Primary Explosives should be handled in small quantities. They are
very sensitive to heat, and even a spark of static electricity can
them to explode. A few primary explosives include lead azide and
mercury fulminate. They are usually used in detonators to set off
High Explosives detonate with greater power than primary explosives
are less sensitive. They usually require a detonator to set them off.
Common types of high explosives include nitro-glycerine and TNT. Most
high explosives are used commercially for blasting and excavating, but
they also are used by the
military in grenades, bombs, and artillery shells.
Blasting Agents are the safest and least expensive explosives used in
industry. They are usually used to blast away rock in excavating and
mining operations. Common blasting agents include dynamite and
ammonium nitrate and fuel oil.
Low Explosives burn rapidly rather than detonate. The most common type
of low explosive is gunpowder. It serves as a propellant to shoot
ammunition from guns and other weapons. Fireworks are also low
Nitroglycerin, also called Nitroglycerol, is a powerful explosive. It
is the principal...