公开(公告)号：US20180001576A1

公开(公告)日：2018-01-04

申请号：US15548557

申请日：2016-02-04

Applicant: EMPA EIDGENOSSISCHE MATERIALPRUFUNGS- UND FORSCHUNGSANSTALT

Inventor： MATTHIAS KOEBEL ,  LUKAS HUBER

IPC: B29C67/20 ,  B01J13/00 ,  C01B33/155 ,  C08J9/28 ,  C01B33/158 ,  C01B33/145 ,  B29K105/00 ,  B29K75/00

CPC classification number: B29C67/202 ,  B01J13/0026 ,  B01J13/0039 ,  B01J13/0065 ,  B01J13/0091 ,  B29K2075/00 ,  B29K2105/0061 ,  C01B33/145 ,  C01B33/155 ,  C01B33/1585 ,  C01B33/16 ,  C01P2006/16 ,  C08J9/28 ,  C08J2201/05 ,  C08J2205/026 ,  C08J2205/028 ,  C08J2205/042 ,  C08J2205/044 ,  C08J2361/12 ,  C08J2375/04

Abstract: 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 3.