Apparatus of manufacturing aerogel sheet

Patent metadata

Field	Value
Publication number	US-10337138-B2
Application number	US-201715576261-A
Country	US
Kind code	B2
Filing date	Feb 7, 2017
Priority date	Feb 22, 2016
Publication date	Jul 2, 2019
Grant date	Jul 2, 2019

Abstract

The present invention relates to an apparatus of manufacturing an aerogel sheet. The apparatus of manufacturing the aerogel sheet includes: a tray device in which a fiber sheet is accommodated; a rotation device including a rotation rod to which the tray device is fixed and a driving member rotating the rotation rod so that the tray device is disposed on an upper and lower portion of the rotation rod; an injection device injecting a silica precursor into the tray device disposed on the upper portion of the rotation rod to impregnate the silica precursor into the fiber sheet; and a surface modification device injecting a coating solution into the tray device disposed on the lower portion of the rotation rod to modify a surface of the fiber sheet in which the silica precursor is impregnated.

First claim

The invention claimed is:

1. An apparatus of manufacturing an aerogel sheet, the apparatus comprising:
a tray device in which a fiber sheet is accommodated;
a rotation device comprising a rotation rod to which the tray device is fixed and a driving member rotating the rotation rod so that the tray device is rotated between an upper position and a lower position of the rotation rod in which the tray device is turned upside down in the lower position;
a silica precursor injection device injecting a silica precursor into the tray device disposed in the upper position of the rotation rod to impregnate the silica precursor into the fiber sheet; and
a surface modification device injecting a coating solution into the tray device disposed in the lower position of the rotation rod to modify a surface of the fiber sheet in which the silica precursor is impregnated.

2. The apparatus of claim 1 , wherein the tray device comprises a tray vessel which has a structure that is sealed by a cover and in which the fiber sheet is accommodated and a connection part disposed on one side of the tray vessel and connected to the silica precursor injection device or the surface modification device.

3. The apparatus of claim 2 , wherein one or more partition walls pushing and fixing the fiber sheet accommodated in the tray vessel are disposed on a rear surface of the cover.

4. The apparatus of claim 3 , wherein each of the partition walls extends in a longitudinal direction or width direction of the cover and has a plurality of through-holes in a surface thereof.

5. The apparatus of claim 2 , wherein a gap member having a plurality of punched holes is disposed between a bottom surface of the tray vessel and a bottom surface of the fiber sheet.

6. The apparatus of claim 5 , wherein the gap member comprises a plate or mesh net having fine punched holes.

7. The apparatus of claim 1 , wherein the silica precursor injection device comprises a silica injection vessel in which the silica precursor is stored and a precursor injection line through which the silica precursor stored in the silica injection vessel is supplied to be injected into the tray device.

8. The apparatus of claim 1 , wherein the silica precursor is prepared by mixing silica sol with a gelling catalyst.

9. The apparatus of claim 8 , wherein the silica sol is prepared by mixing tetraethyl orthosilicate (TEOS) with ethanol.

10. The apparatus of claim 9 , wherein the tetraethyl orthosilicate (TEOS) comprises hydrolyzed TEOS.

11. The apparatus of claim 8 , wherein the gelling catalyst is prepared by mixing ethanol with ammonia water (NH4OH).

12. The apparatus of claim 1 , wherein the surface modification device comprises a coating solution injection vessel in which a coating solution is stored and a coating solution injection line through which the coating solution stored in the coating solution injection vessel is supplied to be injected into the tray device.

13. The apparatus of claim 12 , wherein the surface modification device further comprises a coating solution collection member for collecting the coating solution injected into the tray device into the coating solution injection vessel.

14. The apparatus of claim 13 , wherein the coating solution collection member comprises a suction valve disposed between the tray device and the rotation rod to forcibly discharge the coating solution injected into the tray device through suction force, a coating solution discharge line through which the coating solution discharged by the suction valve is collected into the coating solution injection vessel, and a collection pump generating the suction force in the suction valve.

15. The apparatus of claim 1 , wherein the coating solution is prepared by mixing ethanol with ammonia water (NH4OH).

16. The apparatus of claim 1 , further comprising a transfer device transferring the fiber sheet up to the tray device or absorbing the fiber sheet of which the surface is modified to transfer the fiber sheet to the outside of the tray device.

Assignees

• Lg Chemical Ltd

Inventors

• Kim Ye Hon
• Lee Je Kyun

Classifications

• D06M11/79 Primary

  with silicon dioxide, silicic acids or their salts · CPC title

• C01B33/1585 Primary

  Dehydration into aerogels · CPC title

• B65G49/00

  Conveying systems characterised by their application for specified purposes not otherwise provided for · CPC title

• C01B33/158

  Purification; Drying; Dehydrating · CPC title

• B05C3/109

  Passing liquids or other fluent materials into or through chambers containing stationary articles · CPC title