Heat insulation composition for improving heat insulation and soundproofing functions, containing aerogel, and method for manufacturing heat insulation fabric by using same

1. A method for manufacturing a heat insulation fabric using a heat insulation composition, the method comprising:

step 10 of manufacturing a heat insulation composition (S 10 ), the heat insulation composition including 80 to 100 parts by weight of water as solvent, 3 to 5 parts by weight of aerogel powder, 1 to 2 parts by weight of adhesive binder, and 1 to 5 parts by weight of carbon black powder having a particle of a diameter of 10 μm or less and a density of 0.06 to 0.15 g/cm 3 ;

step 20 of coating the heat insulation composition on an outer surface of a fabric while the fabric is moving (S 20 ); and

step 30 of applying pressure to the outer surface of the fabric coated with the heat insulation composition including 80 to 100 parts by weight of the water as solvent, for the heat insulation composition to be absorbed into an inside of the fabric (S 30 ).

2. The method of claim 1 , wherein the step 10 (S 10 ) includes:

step 11 of preparing an aqueous binder mixture by mixing the solvent and the adhesive binder (S 11 );

step 12 of adding a first additive to, and mixing, the aqueous binder mixture (S 12 );

step 13 of adding to, and dispersing within, the aqueous binder mixture the aerogel powder (S 13 );

step 14 of adding a second additive to the dispersion in which the aerogel powder and the first additive are mixed with the aqueous binder mixture (S 14 ); and

step 15 of adding to, and dispersing within, the dispersion containing the second additive the carbon black powder (S 15 ).

3. The method of claim 2 , wherein in step 12 (S 12 ), at least one of aqueous acrylic resin, porous mineral oxide powder including fumed silica and/or glass bubble, and antifreeze of ethylene glycol and/or propylene glycol is added as the first additive in a weight ratio of 1 to 2 with respect to the mixture of the solvent, the adhesive binder, the aerogel powder, and the carbon black powder.

4. The method of claim 2 , wherein in step 14 (S 14 ), at least one inorganic oxide, selected from a group comprising rutile titanium dioxide, silicon carbide, hematite, and magnetite, with a particle of a diameter of 10 μm or less, is added as the second additive in a weight ratio of 1 to 5 with respect to the mixture of the solvent, the adhesive binder, the aerogel powder, and the carbon black powder.

5. The method of claim 1 , wherein in step 30 (S 30 ), a roller has a width that is similar to or greater than a width of the fabric, and arranged to contact both surfaces or one surface, for the heat insulation composition to be absorbed into the fabric with the pressure of the roller, and a blade is prepared similar or greater than a width of the fabric and with an elastic lower part having a sharp-shaped side, wherein the lower part is bent to contact the transferred fabric, and applies pressure to the fabric, for the heat insulation composition to be absorbed into the fabric.

6. The method of claim 1 , wherein the adhesive binder includes at least one of celluloses, starches, epoxies, polyvinyl alcohol and urethanes, and carboxymethylcellulose.

7. The method of claim 1 , wherein as an additive, at least one mineral oxide selected from a group of titanium dioxide, silicon carbide, and iron hydroxide is added, and the mineral oxide has a particle of a diameter of 10 μm or less and is added in a weight ratio of 1 to 5 with respect to the mixture of the solvent, adhesive binder, aerogel powder, and carbon black powder.