Method and apparatus for manufacturing aerogel sheet

An apparatus for manufacturing an aerogel sheet, the apparatus comprising:

• a supply roller around which a blanket is wound in the form of roll;
• a conveyor belt transferring the blanket wound around the supply roller from one side to the other side thereof;
• a silica sol supply member positioned downstream of the supply roller to inject a silica sol to a surface of the blanket disposed on the conveyor belt and impregnate the blanket with silica sol;
• a first scraper positioned between the silica sol supply member and the catalyst supply member;
• a catalyst supply member positioned downstream of the silica sol supply member to inject a gelling catalyst to the surface of the blanket impregnated with silica sol disposed on the conveyor belt and gelate the silica sol, wherein the catalyst supply member adjusts a catalyst injection rate according to a density of the silica sol;
• a second scraper positioned downstream of the catalyst supply member,
• a collection roller winding the blanket, which is transferred up to the other side by the conveyor belt, in the form of a roll to collect the blanket;
• a reaction vessel which accommodates the roll-shaped blanket collected by the collection roller and in which the accommodated blanket is aged, modified by injecting a coating solution, or dried at a high temperature, wherein the reaction vessel comprises an accommodation space in which the blanket is collected in the form of a roll, an injection hole having one end connected to the accommodation space, and a discharge hole having a second end connected to the accommodation space;
• wherein the first scraper and the second scraper have the same shape and are adjustable in height on a top surface of the conveyor belt to uniformly adjust the thickness of each of the silica sol and the gelling catalyst, and
• wherein the catalyst supply member injects the gelling catalyst to the surface of the blanket at a rate of 0.035 L/min to 0.012 L/min and then leaves the gelling catalyst for a time of 8 minutes to 12 minutes to gradually gelate the silica sol.