Aerogels

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AEROGELS-THE MATERIAL SCIENCE OF CONSTRUCTION
New buildings are rising everywhere, burning energy by the second and this demand for power pushes up greenhouse gases and pollution. 40% of the buildings energy consumption is used for heating and cooling.
Being civil engineers it becomes imperative on our part to device some modern construction methodology to contribute our bit to prevent further worsening of the condition.
Buildings alone waste 13% of the global energy production because of poor insulation. That’s equals to nearly four billion barrels of oil a year. Its an unbelievable waste just to heat up the sky. After years of research scientists have revealed the technology in the form of aerogels that could transform our cities and usher in better future.
What is aerogel?
Aerogel is made from a jelly like substance partly liquid partly solid. Solids are fine chain of silica surrounded by alcohol. It is then supercritically dried to transform it into aerogel.It is basically a form of nanotechnology.It is also known as frozen smoke or blue smoke because of its blue colour.
History of aerogels:
The first aerogels were produced in 1931 by Samuel Kistler, an undergraduate instructor at the College of the Pacific in Stockton, California. Accidently, Kistler found a way to remove the fluid from a wet silica gel, leaving behind its solid structure. The first commercial aerogels were produced in 1942 by the Mosanto corporation, under the trade name Santocel. The process involved soaking a sodium silicate solution in sulfuric acid, then repeatedly washing it in alcohol before drying it at high pressure. Since then, lot of researches has been done in aerogels and technology to use aerogel as a commercial product is invented.

Making of aerogels:
Aerogels are made using sol-gel chemistry. Aerogel is prepared in two simple steps:-
Step 1:-
A small amount of…...

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