Aerogel !
Автор: Beyond The Veil
Загружено: 2024-11-26
Просмотров: 152
Описание:
Aerogel is a translucent, lightweight material that is considered one of the best insulation materials. The first aerogels were made from silica, but other materials like alumina, chromia, and tin dioxide have also been used.
But this is how aerogel is made:
They are created by combining a polymer with a solvent to form a gel.
Then removing the liquid from the gel and replacing it with air.
An aerogel material can range from 50% to 99.98% air by volume, but in practice most aerogels exhibit somewhere between 90 and 99.8% porosity. Aerogels have a porous solid network that contains air pockets, with the air pockets taking up the majority of space within the material.
It was invented in 1932 by scientist Samuel Kistler.
Aerogel is 1,000 times less dense than glass and only twice as dense as air.
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