Aerogel

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Aerogel

An ultralight substance composed of silica, aluminium oxide, chromium oxide, zirconia, carbon and other substances, which is transparent, has significant insulating and sound-attenuating properties, and may have currency as a replacement for ozone layer-depleting CFCs.
References in periodicals archive ?
Before mixing, aerogel powder and HGM were imaged by a high-resolution SEM (Helios Nanolab 600, FEI).
Donald R Young, president and CEO of Aspen Aerogels, said, 'Pyrogel HPS is the latest technological advancement to emerge from our Aerogel Technology Platform.
The bamboo NCF aerogels were prepared using a freeze-drying method.
Some biogenerated polymers have been also used as active reagents for wastewater treatment, such as starch-derived carbon aerogels, chitosan, and its derivatives [19, 22].
The researchers suggest that regions of the Martian surface could be made habitable with a material -- silica aerogel -- that mimics Earth's atmospheric greenhouse effect.
Though Aerogel Technologies is working with Ford to test lightweight Airloy engine covers with superior sound- and heat-absorption properties, it's the company's work with Airbus that shows the promise of aerogels in interior applications.
In recent years, for the synthesis of silica based hydrophobic aerogels tetramethoxysilane (TMOS), tetraethyl orthosilicate (TEOS), polyethoxydisiloxanes, industrial water glass, fly ash, diatomite, bentonite and sodium silicate were used as a silica source [21-28].
Summarizing these studies, the authors obtained macroporous aerogels that did not exhibit the nanostructure of the corresponding hydrogel.
But until now, removing the water molecules without collapsing the fine silica structure has been a long, difficult and expensive process and, as a consequence, the use of aerogels has been limited to a few highly specialist tasks.
But until now, removing the water molecules without collapsing the fine silica structure has been a long, difficult and expensive process and as a consequence, the use of aerogels has been limited to a few highly specialist tasks.
The spray-dried aerogels were then transferred into a clean container and labelled accordingly.
In addition to these materials, silica aerogels firstly synthesized by Kistler in 1931 have been used as additive materials in experimental studies for insulation purposes in concrete technology in recent years.