Aerogels Recipe Recipe Features Features Additional Additional Information Information.

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Presentation transcript:

Aerogels Recipe Recipe Features Features Additional Additional Information Information

Recipe Ingredients Precondensed silica (Silbond H-5, TEOS, or equivalent) Precondensed silica (Silbond H-5, TEOS, or equivalent) Catalyst (ethanol, water, aqueous ammonia or protic acid) Catalyst (ethanol, water, aqueous ammonia or protic acid)Process Place material into autoclave filled with ethanol Place material into autoclave filled with ethanol Pressurize at psi with CO 2 & Temperature at 5-10 (C) Pressurize at psi with CO 2 & Temperature at 5-10 (C) Use liquid CO 2 to remove the ethanol Use liquid CO 2 to remove the ethanol Adjust pressure and temperature to critical points of CO 2 Adjust pressure and temperature to critical points of CO 2 Using drying process, finished product takes 12 hours to 6 days Using drying process, finished product takes 12 hours to 6 days

Features Large internal surface area m 3 /g m 3 /g Mechanically strong Support over 1500x own weight Support over 1500x own weight Transparent / Optical clarity Good heat/sound insulator Extremely low density g/cm g/cm 3

Additional Information CostDisadvantage Types of Aerogels

Reference eande.lbl.gov/ECS/aerogels/satoc.htmwww.mkt-intl.com/aerogels/