Abstract: A polypropylene resin composition includes: a base resin; a thermoplastic elastomer; and an inorganic filler; a major-axis diameter/minor-axis diameter, which is an aspect ratio of the inorganic filler, is 2 to 8. A molded product includes an injection molding of the polypropylene resin composition. The polypropylene resin composition may simultaneously impart excellent rigidity, impact resistance, and excellent dimensional stability even when applied to a molded product having a small thickness, while maintaining a low specific gravity.

Abstract: Disclosed is a resin composition for an exterior material of a vehicle. The resin composition may include an amount of about 40 to 90 parts by weight of polypropylene resin having a melt index of about 70 to 110 g/10 min; an amount of about 10 to 40 parts by weight of an olefin block copolymer including an ethylene-based repeating unit and a ?-olefin-based repeating unit having 4 to 30 carbon atoms; an amount of about 10 to 20 parts by weight of needle-shaped inorganic filler having an aspect ratio of about 5 to 10; and an 0.01 to 5 parts by weight of laser-transmitting black colorant, wherein all the parts by weights based on 100 parts by weight of the resin composition. In particular, an average transmittance may range from about 0.01 to about 1% or less in a wavelength of about 380 to 700 nm, and an average transmittance may range from about 15% or greater and less than about 100% in a wavelength of about 800 to 1200 nm.

Abstract: Disclose herein a polypropylene resin composition for laser welding, which includes a base resin, a thermoplastic elastomer, an inorganic filler, and an organic pigment. The base resin includes an isotactic polypropylene resin and an atactic polypropylene resin.

Abstract: A polypropylene resin composition includes a base resin, a thermoplastic elastomer, and an inorganic filler. The base resin is a polypropylene-based mixed resin including a first resin, a second resin, a third resin, and a fourth resin. The first resin is a homopolypropylene resin. The second resin, the third resin, and the fourth resin are each a polypropylene-based block copolymer resin. A melt index of the second resin measured at a temperature of 230° C. and under a load of 2.16 kg is higher than a melt index of each of the third resin and the fourth resin measured under the same condition. A flexural modulus of the third resin measured in accordance with ASTM D790 is lower than a flexural modulus of the fourth resin measured under the same condition.

Abstract: A high-solid coating composition may include about 70 wt % to about 80 wt % of an acrylic resin; and about 15 wt % to about 21 wt % of a solvent, wherein a content of non-volatile components (NVs) is about 55 wt % to about 60 wt %, a solid by volume ratio (SVR) is about 50% to about 55%, and a combination factor (CF) value being an appearance evaluation index is about 78% or more.

Abstract: A polypropylene resin composition includes a base resin, a thermoplastic elastomer, and an inorganic filler. The base resin is a polypropylene-based mixed resin including a first resin, a second resin, a third resin, and a fourth resin. The first resin is a homopolypropylene resin. The second resin, the third resin, and the fourth resin are each a polypropylene-based block copolymer resin. A melt index of the second resin measured at a temperature of 230° C. and under a load of 2.16 kg is higher than a melt index of each of the third resin and the fourth resin measured under the same condition. A flexural modulus of the third resin measured in accordance with ASTM D790 is lower than a flexural modulus of the fourth resin measured under the same condition.

Abstract: A polypropylene resin composition includes: a base resin; a thermoplastic elastomer; and an inorganic filler; a major-axis diameter/minor-axis diameter, which is an aspect ratio of the inorganic filler, is 2 to 8. A molded product includes an injection molding of the polypropylene resin composition; The polypropylene resin composition may simultaneously impart excellent rigidity, impact resistance, and excellent dimensional stability even when applied to a molded product having a small thickness, while maintaining a low specific gravity.

Abstract: A polypropylene resin composition includes: a base resin including a propylene homopolymer having a melt index of 20 g/10 min to 35 g/10 min measured at a temperature of 230° C. and under a load of 2.16 kg and an ethylene-propylene copolymer having a melt index of 90 g/10 min to 100 g/10 min measured at a temperature of 230° C. and under a load of 2.16 kg; a thermoplastic elastomer having a melt index of 10 g/10 min to 40 g/10 min measured at a temperature of 230° C. and under a load of 2.16 kg; an inorganic filler; and a sodium phosphate-based nucleating agent.

Abstract: The present disclosure provides a polypropylene resin composition including a base resin, a thermoplastic elastomer, and a modified inorganic filler.

Abstract: The present invention provides a method of manufacturing a three-dimensional product having uniform mechanical properties using an SLS 3D printer including the steps of: preparing a mixed powder material by mixing resin powder and glass bubbles, wherein the specific gravity of the glass bubbles is from about 0.8 to about 1.2 times that of the resin powder; supplying the mixed powder material to the 3D printer using a roller; and selectively sintering the mixed powder material by irradiating the powder material using a laser based on 3D data of the product to be manufactured.

Abstract: An apparatus and the method for manufacturing a fiber reinforced plastic product may manufacture a fiber reinforced plastic product by using a 3D printing method and enable the fiber reinforced plastic product to have mechanical physical properties against X, Y, and Z-direction loads, by uniformly arranging reinforcing fibers in the X, Y, and Z directions in respect of orientation distribution, and then by spraying a photocurable resin over the reinforcing fibers so that the reinforcing fibers are impregnated with the photocurable resin.

Abstract: A method for manufacturing plastic products using a 3D printer is provided, wherein the method may be configured for improving appearance quality by suppressing a sink mark and improving strength of a fastening structure, by firstly injection-molding a body of a plastic product using an injection molding method and secondly printing the fastening structure of the body using a 3D printer.

Abstract: A polycarbonate resin composition for a vehicle exterior may include a polycarbonate resin, a silicone polycarbonate, and a syndiotactic polystyrene. The polycarbonate resin may be 45˜85% by weight, the silicone polycarbonate may 10˜50% by weight, and the syndiotactic polystyrene may be greater than 2% by weight and less than 7% by weight, with respect to a total weight of the composition. The polycarbonate resin composition may further include other additives such as a black pigment. The polycarbonate resin composition provides improved physical and/or chemical properties.

Abstract: A solar tracking system, including: a horizontal support; a panel frame connected to the horizontal support such that the panel frame can be tilted forwards and backwards, with a solar battery installed on the panel frame; a support unit connected both to the horizontal support and to the panel frame such that the support unit in cooperation with the horizontal support and the panel frame forms a triangular arrangement, wherein the support unit is slidably connected to either the horizontal support or the panel frame such that the support unit can slide relative to either the horizontal support or to the panel frame, thus tilting the panel frame forwards and backwards according to variations in a slidable position thereof; and a drive unit for sliding the support unit relative to the horizontal support or the panel frame. The solar tracking system realizes a simple, stable support structure and allows the solar battery panel to track the position of the sun with a low amount of power.