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AssigneeEmpa EidgenöSsische MaterialprüFungs- Und Forschungsanstalt
InventorsMATTHIAS KOEBEL, LUKAS HUBER
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The invention relates to a method for producing an aerogel material with a porosity of at least 0.55 and an average pore size of 10 nm to 500 nm, having the following steps: a) preparing and optionally activating a sol; b) filling the sol into a casting mold (10); c) gelling the sol, whereby a gel is produced, and subsequently aging the gel; at least one of the following steps d) and e), d) substituting the pore liquid with a solvent; e) chemically modifying the aged and optionally solvent-substituted gel (6) using a reaction agent; followed by f) drying the gel, whereby the aerogel material is formed. The casting mold used in step b) is provided with a plurality of channel-forming elements (2) which are designed such that the sol filled into the casting mold lies overall at a maximum distance X from a channel-forming element over a specified minimum length L defined in the channel direction of the elements, with the proviso that X<15 mm and L/X>3.
A process for the production of an aerogel material with a porosity of at least 0.55 and an average pore size of 10 nm to 500 nm, comprising the following steps:
A first precursor product for producing an aerogel plate, consisting of an aerogel plate provided with longitudinal holes, which plate can be produced according to claim 5.
Dependencies are inferred from the claim text.