Apparatus and method for manufacturing composite sheet comprising aerogel sheet
AssigneeLG Chem, Ltd.
InventorsYe Hon Kim, Je Kyun Lee, Kyoung Shil Oh
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Abstract
The present invention relates to a method for manufacturing a composite sheet comprising an aerogel sheet, which comprises: a step (S10) of preparing a fiber sheet (10); a step (S20) of laminating the aerogel sheet (30) on each of both surfaces of the fiber sheet (10); and a step (S30) of applying heat and a pressure to the aerogel sheet (30) and the fiber sheet (10), which are laminated, to bond the sheets to each other and to manufacture the composite sheet (40) in which the aerogel sheet (30), the fiber sheet (10), the aerogel sheet (30) are laminated.
Claims15
A method for manufacturing a composite sheet comprising an aerogel sheet, the method comprising:
- a step (S10) of preparing a fiber sheet (10);
- a step (S20) of laminating the aerogel sheet (30) on each of both surfaces of the fiber sheet (10), wherein the step (S20) comprises:
- a step (a) of manufacturing a silica sol (2);
- a step (b) of manufacturing a gelling catalyst;
- a step (c) of injecting the silica sol (2), which is manufactured in the step (a), to a surface of the fiber sheet (1) to impregnate with the silica sol (2);
- a step (d) of injecting the gelling catalyst (3), which is manufactured in step (b), to the surface of the fiber sheet (1), into which the silica sol (2) is impregnated, to manufacture a gel sheet (20) in which the silica sol is impregnated;
- a step (e) of aging the gel sheet (20) in which the silica sol is gelated;
- a step (f) of applying a coating solution to the aged gel sheet (20) to modify a surface of the gel sheet (20);
- and
- a step (g) of drying the gel sheet (20) of which the surface is modified to manufacture the aerogel sheet (30);
- and
- a step (S30) of applying heat and a pressure to the aerogel sheet (30) and the fiber sheet (10), which are laminated, to bond the sheets to each other and to manufacture the composite sheet (40) in which the aerogel sheet (30), the fiber sheet (10), the aerogel sheet (30) are laminated.
A method for manufacturing a composite sheet comprising an aerogel sheet, the method comprising:
- preparing a fiber sheet (10);
- preparing an aerogel sheet (30) by a method comprising:
- injecting a silica sol (2) to a surface of a fiber sheet (1) to impregnate with the silica sol (2);
- injecting a gelling catalyst (3) to the surface of the fiber sheet (1), into which the silica sol (2) is impregnated, to manufacture a gel sheet (20);
- aging the gel sheet (20);
- applying a coating solution to a surface of the aged gel sheet (20) to modify the surface of the gel sheet (20);
- and
- drying the gel sheet (20) of which the surface is modified to yield the aerogel sheet (30);
- laminating the aerogel sheet (30) on each of both surfaces of the fiber sheet (10);
- and
- applying heat and a pressure to the aerogel sheet (30) and the fiber sheet (10), which are laminated, to bond the sheets to each other and to manufacture the composite sheet (40) in which the aerogel sheet (30), the fiber sheet (10), and the aerogel sheet (30) are laminated,
- wherein:
- the aerogel sheet (30) comprises a compound comprising an aerogel matrix and a reinforcing structure, and
- in the compound the aerogel matrix is continuous through the reinforcing structure, and the reinforcing structure is a lofty fibrous batting, wherein the fibers are oriented along all three axes, the lofty fibrous batting has the form of a sheet, the compound is a lightweight insulation product having resilience and durability, the lofty fibrous batting is compressible by at least 50% of its natural thickness and returns to at least 70% of its original thickness after being compressed for 5 seconds, the lofty fibrous batting has a density of 0.001 g/cm3 to 0.26 g/cm3, and the fibers discriminable in a cross-sectional area of the compound has a cross-sectional area less than 10% of the total cross-sectional area.
Dependencies are inferred from the claim text.