Method and device for producing inorganic aerogel fibers
AssigneeRheinisch-Westfälische Technische Hochschulte (RWTH) Aachen
InventorsDavide Pico, Björn Schulz, Alexander Lüking, Thomas Gries
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Abstract
A method for producing an inorganic silica gel fiber or aerogel fiber, comprising the following steps: a) extrusion of a gel, in particular a hydrogel or alcogel, by means of a spinneret directly into a coagulation bath to form at least one filament, b) stretching of the filament in the coagulation bath, c) regeneration of the filament by extraction from the coagulation bath, and d) supercritical drying or freeze drying in order to convert the filament into a silica fiber, in particular an aerogel fiber.
Claims10
A method of producing an inorganic aerogel fiber, comprising:
- extruding a gel through a spinnerette die as at least one filament directly into a coagulation bath, wherein the at least one filament has a diameter of 0.01 um to 1,000 um,
- stretching the at least one filament in the coagulation bath,
- extracting the at least one filament from the coagulation bath,
- regenerating the at least one filament by extraction, and
- supercritical drying or freeze drying to transform the at least one filament into a flexible aerogel fiber.
Dependencies are inferred from the claim text.