Aerogel.org Aerogel Technologies | What can aerogel do for you?™ Aerogel A block of aerogel in a person's hand Aerogel was first created by Samuel Stephens Kistler in 1931, as a result of a bet with Charles Learned over who could replace the liquid in "jellies" with gas without causing shrinkage. IUPAC definition Gel comprised of a microporous solid in which the dispersed phase is a gas. Note 1: Microporous silica, microporous glass, and zeolites are common examples of aerogels. Note 2: Corrected from ref. , where the definition is a repetition of the incorrect definition of a gel followed by an inexplicit reference to the porosity of the structure.  Properties A flower is on a piece of aerogel which is suspended over a flame from a Bunsen burner. Aerogels are good thermal insulators because they almost nullify two of the three methods of heat transfer (convection, conduction, and radiation). Owing to its hygroscopic nature, aerogel feels dry and acts as a strong desiccant. Knudsen effect Materials Silica Carbon Alumina
Aerogel En bit Aerogel som endast väger 2,4 gram håller uppe en 2,5 kilogram tung sten. Aerogeler är material med mycket låg densitet och hög porositet. Bara mellan en och femton procent av volymen består av ett fast material medan resten är fylld av den omgivande gasen eller är vakuum. Aerogeler kan tillverkas genom sol-gel-metoden. Vanligast är aerogeler som består av silikatmaterial, men även plastpolymerer, kol eller metalloxider kan användas som utgångsmaterial. Aerogeler är bland de lättaste fasta material som finns, men har ändå vissa goda mekaniska egenskaper. Användningsområden för Aerogel tros bli gasfiltrering av växthusgaser, t ex koldioxid, när Aerogelen blivit mättad med gasen den filtrerat kan man återanvända den som byggnadsmaterial tack vare dess goda isolerande egenskaper. Det finns idag kommersiella material isolerade med Aerogel för bland annat byggapplikationer med låg värmeledningsförmåga och lambdavärde på 0,014 W/mK.
FAQs | Aerogel Technologies Properties of Aerogels What is aerogel? Aerogels are a diverse class of ultralow density solids that combine multiple disparate and extreme materials properties into a single material envelope. Aerogel materials generally exhibit a high degree of porosity, high specific surface area, and superlative energy damping (thermal, acoustic, and impact) properties. The name aerogel may be misleading at first, as aerogels are dry, rigid or elastic foam-like materials—the name originates from the fact that aerogels are usually derived from wet gels, physically similar to edible gelation, in which the liquid component of the gel has been replaced by gas or a vacuum in a way that preserves the gel’s sparse solid, porous backbone. What is aerogel made of? Historically, the most researched type of aerogel has been the holographic-looking “blue” silica type. How good of an insulator is aerogel? How hot can an aerogel get? I've heard aerogels are easy to break, yet are somehow also superstrong. Yes.
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Top 5 Green Insulation Options" Is there anything soybeans can't do? You can find them in milk, candy, disinfectants, insecticides, cooking oils, margarine and now, home insulation. Chicago homeowners Jason and Jennifer LaFleur learned all about insulation when they began renovating their kitchen. They found that they didn't need to buy conventional fiberglass insulation. Instead, they sprayed soybean foam insulation into their walls [source: Pandolfi]. The LaFleurs discovered what other homeowners are now learning -- that the color of home insulation isn't just pink. Reducing energy costs is one of the most important factors in selecting insulation. Technically speaking, home insulation is green by its very nature because it saves energy. Whatever your definition of green, the best way to quantify how well insulation works is by its R-value, which measures its resistance to heat flow and ranges between less than R-1 and R-60. Interested in greening your insulation?
Aerogel Cost and Manufacturability Aerogels have been around for quite a while, but only recently has technology enabled the innovative product to be produced commercially and cheaper than ever before. In the past, Aerogels production and manufacturing cost were way too much to produce commercially. Aspen Aerogels, Inc. has become a worldwide leader in producing and manufacturing this material thanks to their breakthrough in speeding up the solvent extraction process. Aspen, based out of Massachusetts, has a 30,000 square foot manufacturing plant where the AeroGel is made. In the past, energy costs were the main factor in keeping AeroGel from being produced commercially. Thanks to technological advances and ingenious engineer troubleshooting through the years, AeroGel has become a revolutionary product which can be produced commercially for consumers at a much lower cost than ever before.
MicroLattice The lighter a structure launching into air, the better. That's one of the reasons why ostriches can't fly--because their bones are solid instead of hollow. It's also one of the reasons why researchers at HRL Laboratories created the lightest metal known to man. The researchers collaborated with scientists at Caltech and UC Irvine to design metallic microlattice, a mesh lighter than styrofoam, for aerospace structural components. But that doesn't mean it isn't strong. Other materials that fall into the ultralight category (below 10 mg/cm3), such as silica aerogels, carbon nanotube aerogels, metallic foams and polymer foams, have very random cellular architectures. The key structural component is a series of hollow tubes. Though metallic microlattice is the lightest metal developed to date, it held the title of lightest material for less than a year. Have a burning science question you'd like to see answered in our FYI section?