Abstract: Disclosed herein is a method for manufacturing a sound insulation material, a sound insulation material manufactured using this manufacturing method, and a carpet for a vehicle using the sound insulation material, and the sound insulation material is manufactured using a composite resin composition including 30 parts by weight to 70 parts by weight of aluminum oxide, 10 parts by weight to 20 parts by weight of nanoclay, 0.2 parts by weight to 0.8 parts by weight of an antioxidant, and 0.1 parts by weight to 0.5 parts by weight of a lubricant, with respect to 100 parts by weight of a base resin including PE, and the carpet for a vehicle is manufactured by coating the sound insulation material on a carpet fabric material and drying the result.

Abstract: The present disclosure relates to a skin layer for artificial leather and a method manufacturing the artificial leather, and more particularly, to a composition of an inorganic pigment included in a skin layer. The skin layer for artificial leather, which is the present disclosure, may include a PVC resin, a plasticizer at 84 to 90 phr, and an inorganic pigment at 0.3 phr or more, and a method for manufacturing artificial leather includes: kneading a composition for forming a skin layer, and then forming a skin layer; laminating fiber fabric and the skin layer at a temperature of 150 to 180° C.; and subjecting the laminated fiber fabric and skin layer to roll compression, in which the composition for forming the skin layer may include a PVC resin, a plasticizer at 84 to 90 phr, and an inorganic pigment at 0.3 phr or more.

Abstract: Disclosed herein is a method for manufacturing a sound insulation material, a sound insulation material manufactured using this manufacturing method, and a carpet for a vehicle using the sound insulation material, and the sound insulation material is manufactured using a composite resin composition including 30 parts by weight to 70 parts by weight of aluminum oxide, 10 parts by weight to 20 parts by weight of nanoclay, 0.2 parts by weight to 0.8 parts by weight of an antioxidant, and 0.1 parts by weight to 0.5 parts by weight of a lubricant, with respect to 100 parts by weight of a base resin including PE, and the carpet for a vehicle is manufactured by coating the sound insulation material on a carpet fabric material and drying the result.

Abstract: In a method of testing a display apparatus, a plurality of minimum compensation data for a plurality of grayscales, respectively and a plurality of maximum compensation data for the plurality of grayscales, respectively are determined. The display apparatus includes a display panel displaying an image having the plurality of grayscales. A plurality of grayscale compensation data corresponding to the plurality of grayscales, respectively are set based on the plurality of minimum compensation data and the plurality of maximum compensation data. A flicker characteristic with respect to the plurality of grayscales is measured based on the plurality of grayscale compensation data and test images displayed on the display panel. The flicker characteristic is optimized by selectively changing the plurality of grayscale compensation data based on the measured flicker characteristic.

Abstract: A display apparatus includes a display panel, a gate driver, a counter and a power generator. The display panel includes a gate line and a pixel electrically connected to the gate line. The gate driver is configured to set a voltage level and an output timing of a gate signal applied to the gate line based on a gate driving voltage and a first control signal. The gate driving voltage includes a gate on voltage and a gate off voltage. The counter is configured to increase a count value based on the first control signal. The power generator is configured to adjust a level of the gate driving voltage based on the count value.

Abstract: In a method of testing a display apparatus, a plurality of minimum compensation data for a plurality of grayscales, respectively and a plurality of maximum compensation data for the plurality of grayscales, respectively are determined. The display apparatus includes a display panel displaying an image having the plurality of grayscales. A plurality of grayscale compensation data corresponding to the plurality of grayscales, respectively are set based on the plurality of minimum compensation data and the plurality of maximum compensation data. A flicker characteristic with respect to the plurality of grayscales is measured based on the plurality of grayscale compensation data and test images displayed on the display panel. The flicker characteristic is optimized by selectively changing the plurality of grayscale compensation data based on the measured flicker characteristic.

Abstract: A clay-polyurethane nanocomposite comprising a clay and a polyurethane covalently bonded to the surface of the clay wherein the polyurethane is formed by reacting a clay-containing diisocyanate compound with a polyol, the clay-containing diisocyanate compound contains a diisocyanate compound covalently bonded to surface silanol groups of the clay and 0.5˜5% by weight of the clay based on the diisocyanate compound, and the clay is exfoliated by the polyurethane such that no wide-angle X-ray diffraction (WAXD) peak is detected between 2° and 10° by XRD measurement. The clay-polyurethane nanocomposite structure has clay layers are completely exfoliated. In addition, the clay-polyurethane nanocomposite can be foamed to prepare a foamed clay-polyurethane nanocomposite.

Abstract: Disclosed herein is a clay-polyurethane nanocomposite comprising a clay and a polyurethane covalently bonded to the surface of the clay wherein the polyurethane is formed by reacting a clay-containing diisocyanate compound with a polyol, the clay-containing diisocyanate compound contains a diisocyanate compound covalently bonded to surface silanol groups of the clay and 0.5-5% by weight of the clay based on the diisocyanate compound, and the clay is exfoliated by the polyurethane such that no wide-angle X-ray diffraction (WAXD) peak is detected between 2° and 10° by XRD measurement. The clay-polyurethane nanocomposite has a structure wherein the clay layers are completely exfoliated, rather than a structure wherein the polyurethane is intercalated between the clay layers. Accordingly, the clay-polyurethane nanocomposite has superior physical properties to a pure polyurethane.