Abstract:
A method of preparing ER(electro-rheological) fluids for damping the vibration of vehicles using inorganic polymer-coated nanoparticles with a core-shell structure is provided to apply a uniformly polymer-coated nanoparticle to ER fulids. A method of preparing a high efficiency ER(electro-rheological) fluid for damping the vibration of smart cars using silica-polythiophene core-shell nanoparticles comprises the following steps of: coating an oxidizer on a surface of nanoparticles in an aqueous solution; collecting oxidizer-coated colloidal particles by drying the silica nanoparticles-containing aqueous solution; and adding monomers to the oxidizer-coated colloidal particles in a solvent so that a polymer is polymerized on a surface of the inorganic nanoparticles.
Abstract:
본 발명은 생분해성 콩단백질/천연섬유 복합재 및 이의 제조방법에 관한 것으로서, 더욱 상세하게 설명하면, 생분해 특성이 우수한 콩단백질 등을 함유하는 매트릭스 수지와 단섬유, 직물 또는 부직포 형태의 천연섬유를 포함하는 생분해성 콩단백질/천연섬유 복합재 및 이의 제조방법에 관한 것이다. 본 발명의 콩단백질/천연섬유 복합재는 인장강도, 굽힘강도 등의 기계적 물성뿐만 아니라, 생분해성 역시 우수하여 매우 친환경적이다. 콩단백질, 생분해성, 복합재료
Abstract:
파장 1000nm 이상의 근적외선을 이용하여 엔진오일의 1차 흡광도를 측정하는 1차측정단계; 상기 파장의 근적외선을 이용하여 사용중인 엔진오일의 2차 흡광도를 측정하는 2차측정단계; 및 상기 엔진오일의 2차 흡광도가 1차 흡광도에 비해 1.5배 이상의 증가율을 보일 때 엔진오일의 열화상태로 판단하는 비교단계;를 포함하는 엔진오일열화 감지방법 및 이를 위한 감지시스템이 소개된다.
Abstract:
PURPOSE: A surface processing method of sliding components for a vehicle is provided to improve anti-scuffing property by splaying solid lubricant solution on the surface of the sliding components. CONSTITUTION: A surface processing method of sliding components for a vehicle comprises the following steps. A laser surface micromachining is enabled on the surface of an engine sliding component to form a dimple. The solid lubricant solution is sprayed on the surface of the sliding components to be fixed on the surface of the sliding components. A laser surface micromachining process enabled on a pulsed mode.
Abstract:
PURPOSE: A biodegradable soy protein/natural fiber composite is provided to ensure excellent tensile strength and flexural strength, to be biodegradable, and to be suitable as a material for exteriors of electronic parts or automobile interiors. CONSTITUTION: A biodegradable soy protein/natural fiber composite comprises a matrix resin containing soybean protein, plasticizer and cross-linking agent; a natural fiber selected from at least one or two kinds selected from jute, hemp, cotton fiber, coconut fiber, banana fiber, rice straw and wheat straw. The plasticizer is at least one or two kinds selected from glycerol, propandiol, polyethylene glycol and polyvinyl alcohol.
Abstract:
PURPOSE: An ultra-light sound-absorbing material and a manufacturing method including a nano fiber web are provided to selectively absorb specific frequency by combining main sound absorption factors. CONSTITUTION: An ultra-light sound-absorbing material and a manufacturing method including a nano fiber web are as follows. A hot air adhesive bonded non woven including average surface density includes the average surface density with 10~50 g/m. A composite film includes a first layer including the nano-fiber web and the first layer including the hot-air adhesive bonded non woven. The first layer with nano-fiber web is 0.9 ~ 10 mm.
Abstract translation:目的:提供一种超轻型吸声材料和包括纳米纤维网的制造方法,以通过组合主要吸声因子来选择性地吸收特定频率。 构成:超轻型吸音材料及纳米纤维网的制造方法如下。 包含平均表面密度的非织造布热风粘合剂包括10〜50g / m 2的平均表面密度。 复合膜包括包括纳米纤维网的第一层和包含热粘合无纺布的热空气粘合剂的第一层。 具有纳米纤维网的第一层为0.9〜10mm。
Abstract:
PURPOSE: An engine oil deterioration sensing method and a system are provided to facilitate to determine the deterioration of engine oil by using a near-infrared measuring device which is cheap and possible to miniaturize, thereby enable to apply to a vehicle. CONSTITUTION: An engine oil deterioration sensing method is as follows. The primary absorbance of engine oil is measured by using near-infrared rays at a frequency of 100nm or greater. The secondary absorbance of the using engine oil is measured. A determination value multiplying a difference of the first absorbance and the second absorbance by the square of a daily mean driving distance is calculated. When the determination value is 500 or greater, the deterioration of the engine oil is determined.
Abstract:
본 발명은 탄소나노튜브 강화 구리 복합재료의 제조방법에 관한 것으로서, 저밀도, 우수한 내부식성 및 내마모성, 우수한 휨 특성을 가지는 단일벽 탄소나노튜브에 니켈을 코팅하여 제조한 니켈 코팅된 탄소나노튜브를 구리 분말과 함께 분산용액에 투입하여 초음파 처리한 뒤 건조 및 소결 과정을 거쳐 제조함으로써, 고강도/고전도성의 탄소나노튜브 강화 구리 복합재료를 제조할 수 있는 니켈 코팅된 탄소나노튜브를 이용한 강화 구리 복합재료의 제조방법에 관한 것이다. 탄소나노튜브, 단일벽, 구리, 복합재료, 니켈, 고강도, 고전도성, 초음파 분산
Abstract:
PURPOSE: A biodecomposable ABS/pulp composite material is provided to ensure mechanical properties such as tensile strength, tensile elongation ratio, and impact strength, and to be suitable for materials of automobile parts. CONSTITUTION: A biodecomposable ABS/pulp composite material comprises a matrix resin, an ethylene-propylene rubber grafted with maleic anhydride, and a styrene-acrylonitrile copolymer grafted with maleic anhydride. The matrix resin comprises an acrylonitrile-butadiene-styrene copolymer and pulp containing single or at least two kinds selected from needle-leaf kraft pulp, broadleaf kraft pulp and bleached pulp.
Abstract:
A method for bonding dissimilar aluminum using centrifugal casting is provided to produce products of high strength and abrasion-resistance while reducing the failure rate by making the cast structure fine. A method for bonding dissimilar aluminum using centrifugal casting comprises a first step of heating up the inner wall of a mold of a true-centrifugal caster, a second step of injecting molten metal to be used as an outer material into the mold, a third step of agitating while injecting molten metal to be used as an inner material into the mold, and a fourth step of cooling after hardening the molten metal.