Difference between revisions of "Aerogel, silica"

Latest revision as of 10:44, 8 July 2023

Silica aerogel
Supedium Incredible Aerogel

Crayons on aerogel over flame
NASA: Aerogel

Aerogel Structure (Silica)
Institute of Material Physics in Space

Description

A synthetic, open-celled solid foam that is composed of a network of interconnected nanostructures of silica. Aerogels are derived from gels in which the liquid has been replaced with gas while retaining the structure of the solid framework. The first document example of an aerogel was created the Samuel Kistler in 1931 with a silica gel (patented 1937). The unique properties of aerogels are due to its high surface area and open porous structure that provides extremely low density, thermal conductivity, and sound conductivity. Although they may feel fragile to the touch, they have strong structural integrity. They have been used in solar cells, fuel cells, batteries, supercapacitors as well as more mundane things, such as paints, cosmetics, coats, rugs, pipes, spill-clean-up kits and insulation. Of particular interest for museums is its usefulness in fire protection blankets (Praestegaard 2023).

Synonyms and Related Terms

aerogel; air glass; frozen smoke; blue smoke; solid air; solid cloud

Brand names: Santocel (obsolete); Pyrogel; Nanogel; Cryogel; Spaceloft; AeroZero

Applications

Fire protection
Thermal and sound insulation
Thickener

Risks

Physical and Chemical Properties

Can withstand temperatures up to 1200C
Very lightweight

Resources and Citations

Praestegaard L., G. Sorig Thomsen, K. Woer 'Before the Fire: Experiments on Fire-Protecting Cover Materials', Studies in Conservation, 68(1), 1-8, (2023) link
Alwin, S., Sahaya Shajan, X. Aerogels: promising nanostructured materials for energy conversion and storage applications. Mater Renew Sustain Energy 9, 7 (2020).
Skanacid A/S: www.skanacid.dk
Supedium: The Incredible Aerogel
Wikipedia: https://en.wikipedia.org/wiki/Aerogel
Aerogel: What is Aeogel?

@@ Line 1: / Line 1: @@
-[[File:Aerogel Supedium.jpg|thumb|Silica Aerogel<br> Supedium [https://supedium.com/our-universe-space/the-incredible-aerogel/ Incredible Aerogel]]]
+[[File:Aerogel Supedium.jpg|thumb|Silica aerogel<br> Supedium [https://supedium.com/our-universe-space/the-incredible-aerogel/ Incredible Aerogel]]]
+[[File:Aerogelcrayons NASA.jpg|thumb|Crayons on aerogel over flame<br>NASA: [https://solarsystem.nasa.gov/stardust/tech/aerogel.html Aerogel]]]
+[[File:Aerogel structure.jpg|thumb|Aerogel Structure (Silica)<br>[https://www.dlr.de/mp/en/desktopdefault.aspx/tabid-4961/11054_read-25264/ Institute of Material Physics in Space]]]
 ==Description==
-Any synthetic, open-celled solid foam that is composed of a network of interconnected nanostructures.  Aerogels are derived from gels in which the liquid has been replaced with gas while retaining the structure of the solid framework.  The first document example of an aerogel was created the Samuel Kistler in 1931 with a silica gel (patented 1937). Kistler later made aerogels with alumina, chromia and tin dioxide., The unique properties of aerogels are due to its high surface area and open porous structure that provides extremely low density, thermal conductivity, and sound conductivity.  Although they may feel fragile to the touch, they have strong structural integrity.  They  have been used in solar cells, fuel cells, batteries, supercapacitors as well as more mundane things, such as paints, cosmetics, coats, rugs, pipes, spill-clean-up kits and insulation. Of particular interest for museums is its usefulness in fire protection blankets (Praestegaard 2023).
+A synthetic, open-celled solid foam that is composed of a network of interconnected nanostructures of silica.  Aerogels are derived from gels in which the liquid has been replaced with gas while retaining the structure of the solid framework.  The first document example of an aerogel was created the Samuel Kistler in 1931 with a silica gel (patented 1937). The unique properties of aerogels are due to its high surface area and open porous structure that provides extremely low density, thermal conductivity, and sound conductivity.  Although they may feel fragile to the touch, they have strong structural integrity.  They  have been used in solar cells, fuel cells, batteries, supercapacitors as well as more mundane things, such as paints, cosmetics, coats, rugs, pipes, spill-clean-up kits and insulation. Of particular interest for museums is its usefulness in fire protection blankets (Praestegaard 2023).
 == Synonyms and Related Terms ==
+aerogel; air glass; frozen smoke; blue smoke; solid air; solid cloud
+Brand names: Santocel (obsolete); [[Pyrogel]]; Nanogel; Cryogel; Spaceloft; AeroZero
 ==Applications==
@@ Line 12: / Line 18: @@
 ==Physical and Chemical Properties==
 * Can withstand temperatures up to 1200C
 * Very lightweight
-==Working Properties==
-* Cannot be fashioned into shaped covers inhouse; must be sewn to measurement by the factory
-* Constructed 3-layer mat is very heavy, dense and hard to fold
 ==Resources and Citations==
-* Praestegaard L., G. Sorig Thomsen, K. Woer 'Before the Fire: Experiments on Fire-Protecting Cover Materials', Studies in Conservation, Vol. 68 (1), pp. 1-8, 2023.
+* Praestegaard L., G. Sorig Thomsen, K. Woer 'Before the Fire: Experiments on Fire-Protecting Cover Materials', Studies in Conservation, 68(1), 1-8, (2023) [https://doi.org/10.1080/00393630.2021.1978227 link]
 * Alwin, S., Sahaya Shajan, X. Aerogels: promising nanostructured materials for energy conversion and storage applications. Mater Renew Sustain Energy 9, 7 (2020).
 * Skanacid A/S: www.skanacid.dk