Hyundai Motor Company

Kia Motors Corporation

Noroobee Chemical Co., Ltd.

Hyundai Advanced Materials Co., Ltd.

So Jung Shim

Byung Kyu Cho

Seung Chan Hong

Ill Joo Lee

Jae Hwan Ha

Young Seok Kim

Jae Beom Ahn

Jeong Uk An

Yong Chul Lee

Seung Min Hong

Seung Soo Hong

Dong Chang Lee

Sang Ho Bang

Wang Kyun Yoon

An electromagnetic-wave-transmissive module of a vehicle radar is provided to minimize a dielectric impact reflection effect, which occurs when an electromagnetic wave radiated from an antenna is transmitted through a radome and a transmissive cover The electromagnetic-wave-transmissive module includes one or more of a radome covering the antenna and a transmissive cover, which is disposed to be spaced apart from a front side of the antenna and through which a radio wave radiated from the antenna and then transmitted through the radome is subsequently transmitted. At least one coating layer, which includes PTFE and which has a dielectric permittivity higher than the dielectric permittivity of air and lower than the dielectric permittivity of the radome and the transmissive cover, is formed on the surface of at least one of the radome and the transmissive cover.

Electromagnetic-wave-transmissive module of vehicle radar

The present disclosure relates to a composition for a radar transmissive cover for a vehicle, which may enhance dielectric properties while excellently maintaining mechanical properties. The composition, as the composition forming the radar transmissive cover for the vehicle through which a radar beam radiated from a radar is transmitted, has a main material in which 70 to 90 wt % of Polybutylene Terephthalate (PBT) and 10 to 30 wt % of Polycarbonate (PC) are mixed and an additive containing at least reinforcing filler mixed.

Composition for radar transmissive cover for vehicle

An ultraviolet curable primer for a radio-wave transmission cover of a vehicle may include about 20 wt % to about 30 wt % of urethane acrylate oligomer, about 35 wt % to about 60 wt % of monomer, about 1 wt % to about 5 wt % of photopolymerization initiator, about 0.1 wt % to about 1.0 wt % of wetting additive, and about 10 wt % to about 30 wt % of solvent, wherein the urethane acrylate oligomer comprises about 7.5 wt % to about 12.5 wt % of two-function urethane acrylate oligomer based on the total weight of the ultraviolet curable primer, and about 12.5 wt % to about 17.5 wt % of six-function urethane acrylate oligomer based on the total weight of the ultraviolet curable primer, and wherein the ultraviolet curable primer is applied to a radio-wave transmission cover comprising a multilayered oxide optical film.

Ultraviolet curable primer for radio-wave transmission cover of vehicle

Disclosed is a coating layer penetrable by radio wave and having a metallic luster. The coating layer includes a resin layer as an outmost layer to an exterior or front, a metallic texture layer formed on a rear side of the resin layer and comprising a optical film layer including metal oxides having different refractive indexes, and a germanium (Ge) layer to reflect light and a reflection layer formed on the rear side of the metallic texture layer.

Radio-wave-penetrable layer having metallic luster

Disclosed is a piston ring for engine that includes chromium (Cr) coating layer coated on the surface of a base material of the piston ring of an engine; a chromium nitride (CrN) coating layer; and a silicon-incorporated diamond-like carbon (Si-DLC) coating layer, which is formed on the CrN coating layer, and contains Si component of about 3&#x2dc;10 at %, and a method for manufacturing thereof.

Piston ring for engine

Growing community of inventors

Seoul, South Korea

So Jung Shim