US 11,926,529 B2
Aerogel blanket and method for producing same
Young Hun Kim, Daejeon (KR); Se Won Baek, Daejeon (KR); Sung Min Yu, Daejeon (KR); Kyung Seok Min, Daejeon (KR); Hyun Woo Jeon, Daejeon (KR); Sang Woo Park, Daejeon (KR); and Bong June Kim, Daejeon (KR)
Assigned to LG Chem, Ltd., Seoul (KR)
Appl. No. 17/414,027
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Aug. 28, 2020, PCT No. PCT/KR2020/011536
§ 371(c)(1), (2) Date Jun. 15, 2021,
PCT Pub. No. WO2021/054644, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 10-2019-0114993 (KR), filed on Sep. 18, 2019.
Prior Publication US 2022/0048778 A1, Feb. 17, 2022
Int. Cl. C01B 33/158 (2006.01); B01J 13/00 (2006.01); C04B 30/02 (2006.01); D06M 11/79 (2006.01); F16L 59/02 (2006.01)
CPC C01B 33/1585 (2013.01) [B01J 13/0091 (2013.01); C04B 30/02 (2013.01); D06M 11/79 (2013.01); F16L 59/028 (2013.01); C01P 2004/03 (2013.01); C01P 2006/22 (2013.01); C01P 2006/32 (2013.01); C04B 2201/32 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for producing an aerogel blanket, the method comprising:
1) introducing a precursor solution and a catalyst solution comprising a base catalyst and a polar organic solvent into an impregnation tank to produce a catalyzed sol and allowing a catalyzed sol to stay in the impregnation tank to increase in viscosity;
2) passing a base material for a blanket through the impregnation tank to allow the catalyzed sol to penetrate into the base material for a blanket; and
3) subjecting the base material for a blanket into which the catalyzed sol has been penetrated to gelation on a conveyor belt of a device used for gel casting,
wherein a retention time of the catalyzed sol in the impregnation tank is 0.5 minutes to 40 minutes; and
the viscosity of the catalyzed sol when introduced into the base material is 1.2 to 6.0 times the viscosity of the catalyzed sol immediately after being produced.