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: The present invention relates to a method of preparing a hydrophobic metal oxide-silica composite aerogel, in which a degree of hydrophobicity may be controlled while having a high specific surface area and a low tap density, and a hydrophobic metal oxide-silica composite aerogel prepared thereby. The preparation method according to the present invention may not only have excellent productivity and economic efficiency due to a relatively simpler preparation process and shorter preparation time than the related art, but may also perform an effective surface modification reaction by using a small amount of a surface modifier. Thus, since the surface modification reaction may be easily performed by using only a very small amount of the surface modifier, a hydrophobic metal oxide-silica composite aerogel containing about 1 wt % to 2 wt % of carbon may be prepared.

Abstract: Provided are a method of preparing a metal oxide-silica composite aerogel, and a metal oxide-silica composite aerogel having an excellent weight reduction property prepared by the method. The method includes a step of adding an acid catalyst to a first water glass solution to prepare an acidic water glass solution (step 1); a step of adding a metal ion solution to the acidic water glass solution to prepare a precursor solution (step 2); and a step of adding a second water glass solution to the precursor solution and performing a gelation reaction (step 3) to yield a metal oxide-silica composite wet gel, wherein, in steps 2 and 3, bubbling of an inert gas is performed during the adding of the metal ion solution or the second water glass solution, respectively.

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 low-temperature/atmospheric-pressure method for producing synthetic hectorite and synthetic hectorite produced using the same, and more particularly, provides a method for producing synthetic hectorite at a low temperature and atmospheric pressure and synthetic hectorite produced using the same such that: a crystallization reaction may be carried out under a low-temperature/atmospheric-pressure condition by introducing a step of forming a precipitate and using a weak basic catalyst when the Li—Mg precipitates are formed; a reaction time may be reduced; synthetic hectorite with excellent major application properties may be prepared; and the properties may be easily controlled by controlling a composition ratio of a reactant.

Abstract: The present invention relates to a super absorbent polymer and a production method thereof which enable production of a super absorbent polymer exhibiting a more improved absorption rate while maintaining excellent absorption characteristics.

Abstract: The present disclosure provides an aerogel-containing composition including an aerogel, a water-soluble binder, a foaming agent, and a mixture of water and a polar organic solvent as a solvent, and an insulation blanket prepared using the same. In the aerogel-containing composition, the aerogel is uniformly dispersed in the composition, and when preparing a blanket, an insulation blanket having low thermal conductivity and flexibility of low density is prepared without concern of shrinkage of the substrate for a blanket and detachment of the aerogel during a drying process.

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 invention relates to a method for producing synthetic hectorite at a low temperature and atmospheric pressure and synthetic hectorite produced by the same, and more particularly, to a method for producing synthetic hectorite and synthetic hectorite produced by the same in which: a step of forming Li—Mg precipitates is introduced and thereby ensures an improved crystallization reaction condition and synthetic hectorite having excellent properties; and composition ratios of reactants are controlled, and thus, property control is easy.

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 silica aerogel blanket for ultra-high temperature, a method for producing the same, and a method for constructing the same. More specifically, the present invention provides a method for producing a silica aerogel blanket, the method capable of suppressing the generation of a bad odor during construction by including a step of heat treatment after producing a hydrophobic silica aerogel blanket so as to remove a volatile organic compound (VOC), a silica aerogel blanket produced thereby, and a method for constructing a silica aerogel blanket for ultra-high temperature, the method capable of suppressing the generation of a bad odor during the construction of the silica aerogel blanket produced by the above-mentioned production method 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: 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 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: The present invention relates to a method of preparing an ultra-light metal oxide-silica composite aerogel having high specific surface area and high pore volume and a metal oxide-silica composite aerogel prepared thereby. The preparation method according to the present invention may not only have good economic efficiency because production costs are relatively reduced in comparison to the related art, but may also effectively prevent the collapse of a pore structure by suppressing a shrinkage phenomenon during drying, and thus, a metal oxide-silica composite aerogel having ultra-light properties as well as high porosity characteristics, such as high specific surface area and high pore volume, may be prepared.

Abstract: The present invention relates to an apparatus of manufacturing an aerogel sheet. The apparatus of manufacturing the aerogel sheet includes: a fixing vessel into which a blanket is inserted; and an impregnation device putting a silica sol precursor into the blanket inserted into the fixing vessel to impregnate and gelate the silica sol precursor, wherein the impregnation device includes a rotation roller moving from one end to the other end of a top surface of the blanket while rotating to put the stored silica sol precursor into the blanket and thereby to impregnate and gelate the silica sol precursor.

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: Provided is a method for recycling supercritical waste liquid generated during a process of producing a silica aerogel blanket, and a method for producing a silica aerogel blanket reusing supercritical waste liquid recycled thereby. The method for recycling supercritical waste liquid and the method for producing a silica aerogel blanket reduce the production costs and prevent the deterioration in thermal insulation performance of a silica aerogel blanket by adding a metal salt to the supercritical waste liquid by the recycling method.

Abstract: Provided are a method of preparing a metal oxide-silica composite aerogel, which includes preparing metal oxide-silica composite precipitates by adding a metal salt solution to a silicate solution and performing a reaction, and washing the metal oxide-silica composite precipitates with a washing solvent having a surface tension at 20±5° C. of 30 mN/m or less and drying the washed metal oxide-silica composite precipitates, and a metal oxide-silica composite aerogel having increased specific surface area and pore properties as well as tap density, which is significantly reduced by a maximum of 78.6% in comparison to a composite aerogel prepared by using water as a typical washing solvent, prepared by the method.

Abstract: Provided is a method for producing hydrophobic silica aerogel granules and hydrophobic silica aerogel granules produced thereby, the hydrophobic silica aerogel granules having a suppressed level of specific surface area deterioration and scattering properties. In the method for producing the hydrophobic silica aerogel granules, surface modification, gelation, and solvent substitution can be simultaneously performed in one step, thereby decreasing production time and increasing productivity. Also, by adjusting the addition amount of a non-polar organic solvent when proceeding with a reaction, hydrophobic silica aerogel granules with suppressed scattering properties can be produced. In addition, the hydrophobic silica aerogel granules are silica aerogel particles induced to agglomerate with each other through physical bonding, so that there is an advantage in that the granules can be easily changed into a powder form, thereby having excellent industrial applicability.

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.