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aerogel: [1] comprised of a microporous solid in which the dispersed phase is a gas. (See Gold Book entry for note.) [2] Aerogels are a class of synthetic porous ...
Aerographene or graphene aerogel is the least dense solid known to exist, at 160 g/m 3 (0.0100 lb/cu ft; 0.16 mg/cm 3; 4.3 oz/cu yd). [1] The material reportedly can be produced at the scale of cubic meters.
Either way, in 1931 Kistler published a paper in Nature (vol. 127, p. 741) titled "Coherent Expanded Aerogels and Jellies". He left his teaching post at the University of Illinois in 1935 and signed a contract with Monsanto Company in the early 1940s to start developing granular silica aerogel products under the trademark Santocel. Largely used ...
Aerogel was first discovered by Samuel Stephens Kistle in 1931. [41] It is a kind of gel of which the liquid component of the material is replaced by a gas, thus creating a material that is 99% air. [41]
Aerogel: Hypothetical, experiments, diffusion, early uses [72] Improved thermal insulation (for pipelines, aerospace, etc.), as well as insulative "glass" if it can be made clear Amorphous metal: Experiments, use in amorphous metal transformers: Armor, implants Bioplastic: Limited commercialization (e.g. polylactic acid in 3D printing)
A solution of graphene and carbon nanotubes in a mold is freeze-dried to dehydrate the solution, leaving the aerogel. The material has superior elasticity and absorption. It can recover completely after more than 90% compression, and absorb up to 900 times its weight in oil, at a rate of 68.8 grams per second.
Highly effective thermal insulators known as aerogels can also be prepared using Stöber methods, [15] and Stöber techniques have been applied to prepare non-silica aerogel systems. [21] Applying supercritical drying techniques, a Stöber silica aerogel with a specific surface area of 700 m 2 ⋅g −1 and a density of 0.040 g⋅cm −3 can be ...
In 2002, aerogel held the Guinness World Record for the least dense (lightest) solid. [17] Aerogel is mostly air because its structure is like that of a highly vacuous sponge. The lightness and low density is due primarily to the large proportion of air within the solid and not the silicon construction materials. [18]