Abstract: A method for preparing a super absorbent polymer, includes: feeding a composition containing a water-soluble ethylenically unsaturated monomer having an acidic group of which at least a part is neutralized, an internal crosslinking agent, and a polymerization initiator to a polymerization reactor and subjecting the composition to a polymerization reaction to obtain a hydrous gel polymer; drying the hydrous gel polymer to obtain a dried substance; hydrating the dried substance to adsorb moisture to the dried substance; and pulverizing the hydrated dried substance to obtain a super absorbent polymer. The method reduces an amount of fine particles generated in the pulverization step, thereby increasing a yield of the super absorbent polymer.

Abstract: Provided is a method for preparing a super absorbent polymer composite including: preparing super absorbent polymer particles including a crosslinked polymer of an aqueous ethylenically unsaturated monomer having an at least partially neutralized acid group and an internal crosslinking agent, water treating the super absorbent polymer particles to adsorb moisture on the super absorbent polymer particles, and mixing the water-treated super absorbent polymer particles and an anti-caking agent to adhere the anti-caking agent on the water-treated super absorbent polymer particles.

Abstract: A method for preparing super absorbent polymer particles, includes: feeding a composition containing a water-soluble ethylenically unsaturated monomer having an acidic group of which at least a part is neutralized, an internal crosslinking agent, and a polymerization initiator to a polymerization reactor and subjecting the composition to a polymerization reaction to obtain a hydrous gel polymer; primary drying the hydrous gel polymer in a hot air dryer to obtain a primary dried substance; secondary drying the primary dried substance in a thermal conduction dryer to obtain a secondary dried substance; and pulverizing the secondary dried substance to obtain super absorbent polymer particles. The method reduces the amount of fine particles generated during pulverization, thereby improving the physical properties of the final super absorbent polymer particles.

Abstract: A semiconductor device includes a gate structure including a cell region and a contact region, a slit structure configured to extend in a first direction through the gate structure, first channel structures disposed in the cell region of the gate structure, and second channel structures disposed in the cell region of the gate structure and disposed to be more adjacent to the contact region of the gate structure than the first channel structures. In a second direction that intersects the first direction, the first channel structures may be spaced apart from the slit structure by a first distance, and the second channel structures may be spaced apart from the slit structure at a second distance.

Abstract: A composite insulating material includes two or more blankets, each having a substrate for a blanket and aerogel formed on the inside and a surface of the substrate for the blanket, and a super absorbent polymer layer including super absorbent polymer particles located between the blankets.

Abstract: Provided is 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 comprises adding an acid catalyst to a first water glass solution to prepare an acidic water glass solution (step 1); adding a metal ion solution to the acidic water glass solution to prepare a precursor solution (step 2); and adding a second water glass solution to the precursor solution and performing a gelation reaction (step 3).

Abstract: A semiconductor device includes a first gate structure including first interlayer dielectric layers and first gate lines that are alternately stacked. The semiconductor device also includes a plurality of first supports passing through the first gate structure. The semiconductor device further includes a second gate structure including second interlayer dielectric layers and second gate lines that are alternately stacked. The semiconductor device additionally includes a plurality of second supports passing through the second gate structure. The semiconductor device moreover includes an isolation structure disposed between the first gate structure and the second gate structure, the isolation structure including one or more first protrusions protruding between the first supports and one or more second protrusions protruding between the second supports.

Abstract: A method for synthesizing a pre-hydrolyzed polysilicate, wherein a polysilicate is applied as a reactant when synthesizing the pre-hydrolyzed polysilicate, and the total amount of water added in the reaction system is specified. The method is capable of omitting a condensation reaction by applying a polysilicate as a reactant, thereby significantly shortening synthesis time and reducing production costs when compared with a typical synthesis method in which alkoxysilane-based monomer compound is used as a reactant. In addition, the gelation reaction time and the weight average molecular weight can be easily controlled, and a pre-hydrolyzed polysilicate excellent in storage stability and processability can be synthesized.

Abstract: A rechargeable battery include: an electrode stack that includes a first electrode, a second electrode, and a separator disposed therebetween; and a battery case that accommodates the electrode stack. The battery case includes a first case and a second case, and the first case and the second case are bonded by an insulation bonding portion to seal an inner space of the battery case. The first electrode includes a first electrode current collector and a first electrode active material-layer, and the second electrode includes a second electrode current collector and a second electrode active material layer. The first electrode current collector includes a first protruded portion protruded in a first direction, and the second electrode current collector includes a second protruded portion protruded in a second direction. The first protruded portion is bonded to the first case, and the second protruded portion is bonded to the second case.

Abstract: A separator sealing apparatus for bonding an upper separator and a lower separator with an electrode plate being interposed therebetween and a separator sealing method is provided. The separator sealing apparatus includes a first sealing unit configured to seal a first region specified as an outer edge along a width direction of the electrode plate, among portions where the upper separator and the lower separator face each other; and a second sealing unit configured to seal a second region specified as an outer edge along a length direction of the electrode plate, among the portions where the upper separator and the lower separator face each other.

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: The present disclosure provides a method for manufacturing an aerogel blanket, wherein a surface modification process is performed under acid conditions while using a non-toxic catalyst. Under such a process, a solvent substitution process or a washing process may be omitted to simplify the manufacturing process. Further, collapse of a gel structure due to shrinkage is prevented and the efficiency of surface modification is high even when atmospheric pressure drying is performed, so that an aerogel having excellent thermal conductivity and degree of hydrophobicity may be manufactured. Also provided is an aerogel blanket manufactured by the method, thereby having low thermal conductivity and a low moisture impregnation rate since a hydrophobic group is uniformly formed inside a substrate.

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: Disclosed are a nuclear fuel pellet having enhanced thermal conductivity and a method of manufacturing the same, the method including (a) a step of manufacturing a mixture including a nuclear fuel oxide powder and a thermally conductive plate-shaped metal powder; and (b) a step of molding and then heat-treating the thermally conductive plate-shaped metal powder to have an orientation in a horizontal direction in the mixture, thereby forming a pellet.

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: An electrode assembly is provided. The electrode assembly has a plurality of electrode plates having one or both sides of each of the electrode plates that are coated with an electrode active material and are stacked with a separator interposed between the respective electrode plates. The separator includes a surplus outer periphery of a size greater than the outer periphery of an electrode plate, an electrode tab which extends from the outer periphery of the electrode plate and protrudes outwardly beyond the outer periphery of the separator is formed on each electrode plate, and at least some of the separators forming the electrode assembly have an insulation-enhancing part for suppressing heat shrinkage of a separator formed in the surplus outer peripheries thereof which are adjacent to the respective electrode tabs.

Abstract: A method for producing a plate type metal-silica composite aerogel and a plate type metal-silica composite aerogel produced thereby in which the metal salt concentration and the basic catalyst concentration are adjusted to form a plate type intermediate first, and then an appropriate amount of a water glass solution is added, thereby enabling the plate type metal-silica composite aerogel to be produced in a short time under conditions of low temperature and atmospheric pressure, so that the process is simpler than the conventional production method, and the cost is reduced, which is excellent in economy. Also provided is a plate type metal-silica composite aerogel, which is produced by the claimed method and has excellent dispersibility that requires no additional surface modifier.

Abstract: The present invention relates to nuclear fuel pellets and a manufacturing method thereof, and more particularly, to nuclear fuel pellets comprising a trapping material of fission gas and a manufacturing method thereof. A nuclear fuel pellet of the present invention comprises a nuclear fuel; and a trapping material of fission gas, wherein the trapping material of the fission gas includes an oxide containing at least one element selected from the group consisting of silicon (Si), aluminum (Al) and barium (Ba) to exhibit an excellent trapping ability selective and independent for fission gas.

Abstract: Provided is a lever type vehicular remote shift switching device. The switching device includes: a lever housing (100) disposed at a steering shaft of a vehicle; a lever substrate (200) disposed within the lever housing (100); a lever rotary switch unit (300) at least partially rotatably disposed at an end of the lever housing (100) and comprising a rotary switch part (360) disposed on the lever substrate (200); a lever button switch unit (400) at least partially disposed at an end of the lever rotary switch unit (300) in a movable pressing manner, and including a lever button switch 460 at least partially disposed on the lever substrate (200), wherein the lever button switch unit (400) is at least partially disposed in the longitudinal direction of the lever housing (100) so as to pass through an at least part of the lever rotary switch unit (300).

Abstract: A method for producing a silica aerogel, the method including preparing a reactant by adding a basic catalyst to a first silica precursor solution, performing primary gelation in which the reactant is stirred to form a gel precursor, introducing a second silica precursor solution to a fiber, and performing a secondary gelation in which the gel precursor is introduced to the fiber to which the second silica precursor solution was introduced to form a silica aerogel.