METHOD AND DEVICE FOR FABRICATING AEROGELS AND AEROGEL MONOLITHS OBTAINED THEREBY

Method and devices for rapidly fabricating monolithic aerogels, including aerogels containing chemical sensing agents, are disclosed. The method involves providing a gel precursor solution or a pre-formed gel in a sealed vessel with the gel or gel precursor at least partially filling the internal vo...

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Bibliographische Detailangaben
Hauptverfasser:	ANDERSON ANN M, MAHONY MARY K, BUCINELL RONALD B, GAUTHIER BEN M, BAKRANIA SMITESH
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON COMPOUNDS THEREOF GENERAL PROCESSES OF COMPOUNDING INORGANIC CHEMISTRY INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING METALLURGY NON-METALLIC ELEMENTS ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS TESTING THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING WORKING-UP
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Beschreibung
Zusammenfassung:	Method and devices for rapidly fabricating monolithic aerogels, including aerogels containing chemical sensing agents, are disclosed. The method involves providing a gel precursor solution or a pre-formed gel in a sealed vessel with the gel or gel precursor at least partially filling the internal volume of the vessel and the sealed vessel being positioned between opposed plates of a hot press; heating and applying a restraining force to the sealed vessel via the hot press plates (where the restraining force is sufficient to minimize substantial venting of the vessel); and then controllably releasing the applied restraining force under conditions effective to form the aerogel. A preferred device for practicing the method is in the form of a hot press having upper and lower press plates, and a mold positioned between the upper and lower plates. Doped aerogel monoliths and their use as chemical sensors are also described.