System and method for producing an aerogel composite material, and aerogel composite material
AssigneeRockwool International A/S
InventorsChristoph Egli, Ivo Kym
Life of this patent
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Abstract
A system and method for producing an aerogel composite material includes a reaction vessel having a movable carrier basket for receiving a plurality of fiber mats, and a plurality of plates to space the fiber mats apart from one another. Once the plates have been removed, there are gaps between the aerogel insulating boards, through which hot drying air can be blown during a drying process. The method has the advantage that the quantities of solvents and reagents to be disposed of are minimal, and in addition thereto, no complex work-up processes are necessary.
Claims33
A system for industrial production of a fiber-reinforced aerogel plate, comprising:
- a first reservoir for a solvent,
- a second reservoir for an organosilane compound,
- a third reservoir for a hydrophobizing agent,
- a fourth reservoir for an acid,
- a fifth reservoir for a base,
- a reaction vessel for receiving a plurality of fiber mats,
- a cover for the reaction vessel,
- a plurality of connecting lines between the first, second, third, fourth and fifth reservoirs and the reaction vessel,
- a removable basket for receiving the plurality of fiber mats in the reaction vessel, and
- a plurality of plates to space the plurality of fiber mats apart from each other.
A system for the industrial production of a fiber-reinforced aerogel plate, comprising:
- a plurality of reservoirs comprising:
- a first reservoir for a solvent,
- a second reservoir for an organosilane compound,
- a third reservoir for a hydrophobizing agent,
- a fourth reservoir for an acid, and
- a fifth reservoir for a base,
- a reaction vessel for receiving a plurality of fiber mats,
- a plurality of connecting lines between said plurality of reservoirs and the reaction vessel,
- wherein the reaction vessel is in communication directly or indirectly with the first reservoir and the third reservoir teach via a recirculation line.
A method for producing a fiber-reinforced aerogel plate, comprising:
- preparing a silicatic sol,
- hydrophobizing the gel with a hydrophobizing agent in the presence of an acid as catalyst,
- arranging initially a plurality of fiber mats and a corresponding plurality of intermediate plates alternately in a reaction vessel, so that two fiber mats of the plurality of fiber mats are separated from each other by a respective intermediate plate of the plurality of intermediate plates,
- adding the silicate sol to the reaction vessel until gelling is started, and
- draining a reaction solution from the reaction vessel after gelling of the gel, removing the intermediate plates and drying the formed, fiber-reinforced aerogel plates at a temperature >100° C.
The method according to 15, wherein the drying takes place by blowing a hot drying gas through the reaction vessel.
Dependencies are inferred from the claim text.