Abstract:
PURPOSE: A manufacturing method of a micro channel plate is provided to manufacture a large scale micro channel plate with reduce manufacture cost. CONSTITUTION: A micro channel plate is manufactured by etching metal fibers(120) in composite material(100''). The composite material(100'') is made of a bottom base material layer(111'), many metal fibers(120) and a top base material layer(112'). The base material layers(111',112') are formed by coating liquid thermosetting resin. The metal fibers(120) are arranged on the bottom base material layer(111') and covered with the top base material layer(112'). The composite material(100'') is cut at an angle. The metal fibers(120) contained in the composite material(100'') are etched more readily than the thermosetting resin so as to form channels at the area corresponding to the metal fibers(120). Secondary electron emission material is coated inside the channels. Each of the channels has an anode at its one end and a cathode at other end.
Abstract:
PURPOSE: A mold for manufacturing a barrier rib integrated rear substrate of a plasma display panel and a manufacturing method thereof are provided to allow for ease of manufacture and reduce costs by manufacturing the rear substrate by coupling barrier forming plates and cell forming plates alternately with each other. CONSTITUTION: A mold(40) comprises a plurality of barrier rib forming plates(41) each of which has a thickness corresponding to the thickness of the barrier rib; a plurality of cell forming plates(42) each of which has a thickness corresponding to the width of the cell formed between barrier ribs, wherein the barrier rib forming plates and cell forming plates are coupled alternately with each other; and wall plates(43) coupled to the assembly of the barrier rib forming plates and cell forming plates, and which serve as a dam for the mold.
Abstract:
PURPOSE: A composite form using a composite board having excellent impact resistance is provided to improve workability by lightening. CONSTITUTION: The composite form(30) using a composite board having excellent impact resistance comprises: a composite board(20) containing a composite material layer composed of stiffener and resins, an impact resistant layer piled on the composite material layer and composed of high impact resistant materials, a lightweight layer piled on the impact resistant layer and composed of lightweight foams, an impact resistant layer and a composite material layer piled on the lightweight layer in order, and a coating layer coated on the surface of the composite material layer; a longitudinal steel frame(31) covering and supporting around the composite board(20); and a steel stiffening rib(32) stiffening after connecting upper/lower members or right/left members to the steel frame(31).
Abstract:
PURPOSE: A temperature dielectric sensor for simultaneously measuring temperature and dielectric constant and manufacturing method of the same are provided to measure fluctuation of dielectric constant as well as physical quantities such as temperature. CONSTITUTION: A sensor includes a first base(100); a dielectric electrode(200) formed on one side of the first base and having a plurality of electrodes regularly branched and arranged to measure dielectric properties of high molecular material; a common contacting point(300) formed on the one side of the first base and regularly arranged between the branched electrodes of the dielectric electrode; and a temperature sensor electrode(400) formed on the one side of the first base and contacting with one ends of the common contacting point to measure temperature of the high molecular material.
Abstract:
PURPOSE: A cast for composite material used to newly build a concrete structure is provided to semi-permanently use the material containing a core and to lighten the structure in order to improve workability of the building process. CONSTITUTION: The cast comprises sandwich panels(21) interposed by a core and hollowed steel frames. The core(31) has multiple micro holes(33) charged by a composite material(32) to form the sandwich panel(21). Alternatively, the panel(21) may be manufactured by sewing together the core and a fibrous mat by a reinforcing fiber and introducing the resin. The composite material(32) comprises fibrous reinforcing mat containing carbon fiber, glass fiber and polymeric mats and the resin composed of polymeric material. The core can include urethane foam, polystyrene foam, plyboard or panels made of used wood or used paper.
Abstract:
PURPOSE: A method for repairing and reinforcing a drain pipe using resin transfer molding is provided to reduce the period of construction work by using thermosetting resins and to save the costs for construction by excluding a refrigerator car for restraining resin hardening. CONSTITUTION: A fibrous preform(6) having a flexible tube(7) is prepared. A resin pipe having a flexible film for preventing contamination and damage is installed in a drain pipe(5) to be repaired or reinforced. The tube is expanded to closely adhere the fibrous preform to the drain pipe. Both ends of the tube are sealed by caps(14,15) having a gate(12) and an air vent(13). Thermosetting resin is injected to the tube and hardened. The fibrous preform remaining in the drain pipe performs as a protecting film.
Abstract:
PURPOSE: A column of a machine tool and a production method thereof are provided to improve a damping characteristic of the column by reinforcing a long fiber reinforced polymer composite material or an SMC(sheet molding compound) to the column of the machine tool. CONSTITUTION: A long fiber reinforced polymer composite material or a composite material plate(14) produced with an SMC is reinforced to the surface of any one part of the inner or outer part of the column(12). Thereby, the high vibration generated in the column of a machine tool(10) is damped so that accuracy is improved. Herein, to produce the column, the composite material is accumulated on a reinforced part of the column. The column is covered by a vacuum bag and put in an autoclave. The composite material is hardened by giving pressure outside while keeping a vacuum state in the inside. Accordingly, the column reinforced by the composite material is produced.
Abstract:
본 발명은 복합재료 샤프트 제작시 폴리에틸렌이나 폴리프로필렌 재질의 열수축튜브를 사용함으로써, 제작공정을 단순화하고 생산단가를 절감할 수 있는 열수축튜브를 이용한 복합재료 샤프트 및 그 제조방법을 제공하는 데 그 목적이 있다. 본 발명에 따르면, 이형제가 도포된 맨드럴(20)의 표면에 장섬유 강화 복합재료(30; continuous fiber reinforced composites)를 적층하는 적층단계(S1)와, 상기 적층단계(S1)에서 맨드럴(20)의 표면에 적층된 장섬유 강화 복합재료(30)의 둘레에 열을 가하면 수축되는 가교폴리올레핀, 폴리에틸렌, 폴리프로필렌 중의 어느 하나의 재질로 형성된 열수축튜브(10)를 삽입하는 삽입단계(S2)와, 오븐에서 상기 열수축튜브(10)를 가열하여 수지(resin)가 상기 장섬유 강화 복합재료(30)의 사이에 충진되어 상기 장섬유 강화 복합재료(30)를 경화시키는 경화단계(S3) 및, 상기 경화단계(S3)에서 경화된 상기 장섬유 강화 복합재료(30)와 상기 맨드럴(20)을 분리하는 분리단계(S4)를 포함하는 것을 특징으로 하는 열수축 튜브를 이용한 복합재료 샤프트의 제조방법이 제공된다.
Abstract:
본 발명은 도로의 측면에 복합재료를 이용한 자동차용 가드레일을 고정 설치하므로써, 운전자의 부주의 및 악천후로 발생되는 교통사고의 확대를 방지함과 동시에, 사고 이후에 발생하는 자동차의 도로 이탈 및 전복을 방지하는 고충격흡수의 복합재료를 이용한 자동차용 가드레일을 제공하는데 그 목적이 있다. 본 발명에 따르면, 복합재료를 이용한 자동차용 가드레일(1)에 있어서, 지면에 지지된 지지대(14)에 결합되어 있으며 자동차의 충격시 이런 충격력을 흡수할 수 있도록 양표면에는 요철부(11a, 11b, 11c) 또는 돌출부(11d, 11e, 11f)가 형성되어 있고 내부에는 중공부(15, 16, 17, 18, 19, 20)가 형성된 충격흡수패널(10a, 10b, 10c, 10d, 10e, 10f)을 포함하는 것을 특징으로 하는 복합재료를 이용한 자동차용 가드레일이 제공되고, 또한, 상기 지지대(14)에 상기 충격흡수패널(10a, 10b, 10c, 10d, 10e, 10f)을 고정시키는 고정브라켓(12)의 중간부위는 상기 지지대(14)의 외측면을 감쌀 수 있도록 형성되어 있고, 상기 고정브라켓(12)의 좌·우측에는 충격흡수패널(10a, 10b, 10c, 10d, 10e, 10f)의 상부 끝단부에 삽입하여 고정할 수 있도록 하부측 방향으로 개방된 고정부(25)가 형성되어 있는 것을 특 징으로 하는 복합재료를 이용한 자동차용 가드레일이 제공된다.