Abstract: The present invention relates to a method for manufacturing an aerogel sheet. The method for manufacturing an aerogel sheet includes: a step (a) of preparing silica sol; a step (b) of preparing a gelling catalyst; a step (c) of injecting the silica sol, which is prepared in the step (a), to a surface of a blanket to impregnate the silica sol; and a step (d) of injecting the gelling catalyst, which is prepared in the step (b), to the surface of the blanket, into which the silica sol is impregnated, to gelate the silica sol.

Abstract: Provided are a preparation method of a silica aerogel-containing blanket which includes mixing a water glass solution, a polar organic solvent, and a silazane-based surface modifier to prepare a sol, preparing a silica gel-base material composite by immersion and gelation of a base material for a blanket in the sol, and drying the silica gel-base material composite, and a silica aerogel-containing blanket prepared by using the preparation method. A silica aerogel-containing blanket having a high degree of hydrophobicity as well as excellent physical properties, particularly, low tap density, high porosity, and excellent mechanical flexibility can be prepared by the minimal use of a surface modifier without a surface modification step by the above method.

Abstract: In the present invention are provided a method for preparing a silica aerogel-containing blanket, and a blanket which includes a silica aerogel and is manufactured using the same, wherein the method includes a step for preparing a reaction solution by reacting a silazane-based surface modification agent with an alcohol-based compound, a step for preparing a silica gel-base material composite by adding a silica precursor, water, and a polar organic solvent to the reaction solution to prepare a silica sol, and then immersing a base material for a blanket in the prepared silica sol to gelate the silica sol, and a step for drying the silica gel-base material composite.

Abstract: The present invention relates to a method for manufacturing an aerogel sheet. The method for manufacturing an aerogel sheet includes: a step (a) of preparing silica sol; a step (b) of preparing a gelling catalyst; a step (c) of injecting the silica sol, which is prepared in the step (a), to a surface of a blanket to impregnate the silica sol; and a step (d) of injecting the gelling catalyst, which is prepared in the step (b), to the surface of the blanket, into which the silica sol is impregnated, to gelate the silica sol.

Abstract: The present disclosure provides a silica aerogel-including blanket including a substrate for a blanket; and a silica aerogel and an opacifying agent locating at least one of on a surface of and inside the substrate for a blanket, wherein the opacifying agent is a second particulate with inorganic particles of a first particulate being aggregated, and includes 1 to 5 of the inorganic particles per unit volume of 1 ?m3, and a method for preparing the same. The silica aerogel-including blanket according to the present disclosure is capable of exhibiting flame retardancy as well as an excellent insulation property, particularly, an excellent insulation property at high temperatures, by including an opacifying agent having excellent dispersibility and high surface activity through chemical etching.

Abstract: Provided is a method for producing a silica aerogel blanket, the method comprising recovering and reusing a supercritical waste liquid generated after a supercritical drying process. Without putting in additional equipment investments or energy, supercritical waste liquid recovered after a supercritical drying process can be reused by lowering the content of ammonium ions (NH4+) present therein through a simple adjustment of the conditions for the supercritical drying process. Thus, it is possible to produce a silica aerogel blanket while reducing the production costs thereof and preventing the deterioration of thermal insulation performance of the silica aerogel blanket.

Abstract: Provided is a method for producing a silica aerogel blanket having high thermal insulation and high strength, wherein an acicular metal-silica composite is added to a step of preparing a silica precursor solution during the production of the silica aerogel blanket to produce a silica aerogel blanket having characteristics of high thermal insulation, high strength, high thermal resistance and low dust.

Abstract: Provided are an aerogel precursor, a method for preparing the same, an aerogel prepared therewith, and a method for preparing an aerogel using the same, wherein the aerogel precursor includes a structural unit represented by Formula 1 below and at least one selected from the group consisting of structural units represented by Formulae 2 to 4 in a molar ratio of 100:1 to 100:20, and has a weight average molecular weight of 1,000 g/mol to 6,000 g/mol, and a viscosity of 2.0 to 4.0 cps after heating for 24 hours or more at 45 to 60° C.

Abstract: A method for manufacturing an aerogel sheet according to the present invention includes: a step (a) of preparing a blanket having a plate shape; a step (b) of mixing silica sol with gelling catalyst to prepare a silica sol precursor; and a step (c) of injecting the silica sol precursor prepared in the step (b) to a surface of the blanket prepared in the step (a) through an injection device to gelate the silica sol precursor, wherein, in the step (c), the injection device injects the silica sol precursor while moving from one side to the other side of the surface of the blanket.

Abstract: Provided is a method for recycling supercritical waste liquid and a method for producing a silica aerogel blanket capable of reducing the production costs and preventing the deterioration in thermal insulation performance of a silica aerogel blanket, the method including adding sulfuric acid to supercritical waste liquid to remove ammonium ions in the form of ammonium sulfate salt, the ammonium ions which are present in the supercritical waste liquid, and reusing supercritical waste liquid from which the ammonium ions are removed.

Abstract: Provided is a composite thermal insulation sheet including an aerogel and a method for manufacturing method the same. The methods yield an ultra-thin aerogel composite sheet having characteristics of low dust, high strength and high thermal insulation, thereby having an increased applicability thereof to an electronic device.

Abstract: The present invention relates to a method for manufacturing an aerogel sheet and comprises: a step (a) of impregnating an acid solution into a fiber sheet to clean the fiber sheet by using the acid solution and impregnating a binder solution into the fiber sheet that is cleaned by using the acid solution to manufacture a pre-processed fiber sheet; a step (b) of impregnating a silica precursor into the pre-processed fiber sheet; and a step (c) of a gelling catalyst into the fiber sheet into which the silica precursor is impregnated to gelate the silica precursor.

Abstract: The present invention relates to a method for manufacturing a composite sheet comprising an aerogel sheet, which comprises: a step (S10) of preparing the aerogel sheet (30); a step (S20) of laminating a fiber sheet (10) on each of both surfaces of 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 fiber sheet (10), the aerogel sheet (30), and the fiber sheet (10) are laminated.

Abstract: The present invention relates to a two-step synthesis method of a pre-hydrolyzed alkyl polysilicate. In the method, a silica precursor hydrated to 90 to 100% is added to maximize a condensation reaction rate, and a silica precursor hydrated to 25 to 70% is additionally added to terminate a condensation reaction, so that a condensation reaction time may be remarkably shortened relative to a conventional one-step synthesis method and may be shortened even without the use of a condensation catalyst, so that the catalyst purchase cost and the catalyst separation step in the process may not be required, thus having a simple process and reducing the production cost. Also, the amount and time point of the silica precursor additionally added may be controlled, thereby easily controlling the gelation reaction time and the weight average molecular weight, and synthesizing the pre-hydrolyzed alkyl polysilicate excellent in storage stability and processabilty.

Abstract: The present disclosure provides a silica aerogel-including blanket including a substrate for a blanket; and a silica aerogel and an opacifying agent locating at least one of on a surface of and inside the substrate for a blanket, wherein the opacifying agent is a second particulate with inorganic particles of a first particulate being aggregated, and includes 1 to 5 of the inorganic particles per unit volume of 1 ?m3, and a method for preparing the same. The silica aerogel-including blanket according to the present disclosure is capable of exhibiting flame retardancy as well as an excellent insulation property, particularly, an excellent insulation property at high temperatures, by including an opacifying agent having excellent dispersibility and high surface activity through chemical etching.

Abstract: Disclosed is a water-dispersed aerogel, having an eco-friendly composition that contains an organic solvent in a decreased amount while increasing ease of use of aerogel microparticles in a liquid phase and a method of manufacturing the water-dispersed aerogel is also provided.

Abstract: The present disclosure provides a silica aerogel-including blanket including a substrate for a blanket; and a silica aerogel and an opacifying agent locating at least one of on a surface of and inside the substrate for a blanket, wherein the opacifying agent is a second particulate with inorganic particles of a first particulate being aggregated, and includes 1 to 5 of the inorganic particles per unit volume of 1 ?m3, and a method for preparing the same. The silica aerogel-including blanket according to the present disclosure is capable of exhibiting flame retardancy as well as an excellent insulation property, particularly, an excellent insulation property at high temperatures, by including an opacifying agent having excellent dispersibility and high surface activity through chemical etching.

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.

Abstract: The present invention relates to a hydrophilic silica aerogel blanket for ultra-high temperature insulation, a production method thereof, and a construction method thereof. More specifically, the present invention provides a production method a hydrophilic silica aerogel blanket, the method capable of strengthening the structure of a silica gel by adding a basic catalyst in an aging step, reducing processing time and cost by omitting a surface modification step, thereby reducing manufacturing cost, and suppressing the generation of a bad odor during construction by fundamentally blocking a volatile organic compound (VOC), a hydrophilic silica aerogel blanket produced thereby, and a construction method of a hydrophilic silica aerogel blanket, the method capable of suppressing the generation of a bad odor when constructing the hydrophilic aerogel blanket on an ultra-high temperature piping equipment, and at the same time, preventing the loss of heat insulation performance due to moisture in the air.

Abstract: The present invention relates to a two-step synthesis method of a pre-hydrolyzed alkyl polysilicate. In the method, a silica precursor hydrated to 90 to 100% is added to maximize a condensation reaction rate, and a silica precursor hydrated to 25 to 70% is additionally added to terminate a condensation reaction, so that a condensation reaction time may be remarkably shortened relative to a conventional one-step synthesis method and may be shortened even without the use of a condensation catalyst, so that the catalyst purchase cost and the catalyst separation step in the process may not be required, thus having a simple process and reducing the production cost. Also, the amount and time point of the silica precursor additionally added may be controlled, thereby easily controlling the gelation reaction time and the weight average molecular weight, and synthesizing the pre-hydrolyzed alkyl polysilicate excellent in storage stability and processabilty.