Aerogel is a substance similar to gel in which the liquid component is replaced by a gas, resulting in a solid of very low density (3 , mg / cm 3 or 3 kg / m 3 ) and highly porous, with some very surprising properties, such as its huge potential for thermal insulation.
His condition is solid, and its density is very low, weighing only a few 3 milligrams per cubic centimeter. Of course, this is due to its high porosity, which gives it remarkable properties when used as thermal or acoustic insulation. It has a refractive index of 1, very low for a solid.
This material is generally composed of 90% to 99.8% air, is a thousand times less dense the glass and about three times denser than air. Familiarly called frozen smoke, solid smoke or blue smoke due a semi-transparent nature, however, has a consistency similar to touch the foam or foamy. It looks spooky and has a considerable resistance because supports more than 1000 times its weight .
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The flower does not burn because the insulating properties of aerogels. |
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E l Aerogel can be made from different materials, the most common are based aerogels silica, zirconium , alumina oxide chromium, tin and carbon .
Aerogel has several commercial applications, but mainly has been used as insulation in the windows of office buildings, which its properties are used to prevent heat loss or cold.
If someday we build airships or balloons with this material, we could rise thousands of meters and by differences in temperature (80 ° C to 8,000 meters) float indefinitely. Who knows, maybe flying carpets future are made from some kind of Aerogel.
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Today the world of sport is starting to use this unique material for the manufacture of their products. |
Here I leave a video on how the behavior of this material:
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