Abstract:
본 발명은 자동차 스티어링휠 리모콘 베젤 조립 시 사용되는 폴리우레탄 폼과 접촉 시에도 화학적 균열이 발생하지 아니하는 우수한 내환경균열성을 가지고, 향상된 내열성 또는 내충격성을 가지는 수지 조성물로 제조된 스티어링 휠 리모콘 베젤용 고분자 수지 조성물에 관한 것이다. 본 발명의 일 측면에 따른 스티어링 휠 리모콘 베젤용 고분자 수지 조성물은, 테레프탈산을 포함한 디카르복실산 성분의 잔기와, 디안히드로헥시톨을 포함한 디올 성분의 잔기를 포함하는 폴리에스테르 공중합체 40 내지 50중량%; 불포화니트릴-디엔계고무-방향족비닐 그라프트 공중합체, 및 알킬메타크릴레이트-디엔계고무-방향족비닐 그라프트 공중합체로 이루어진 군으로부터 선택되는 1종 이상의 공중합체 10 내지 20중량%; 및 폴리카보네이트 40 내지 50중량%로 이루어진 수지 조성물과, 상기 수지 조성물 100중량부에 대해 포스파이트계 산화방지제 0.1 내지 0.5중량부를 더 포함한다.
Abstract:
본 발명은 압출-사출 일체 성형공법을 이용해 유리섬유의 길이 증대를 통한 소재 물성을 향상시킴에 있어 폴리올레핀계 수지 조성물과 Glass fiber간 함침성 및 상용성(Compatibility) 증대를 통해 굴곡탄성율, 인장강도, 충격강도등 기계적 물성을 향상시킴으로서 유리섬유 감량을 통한 부품 중량절감이 가능한 복합소재 조성물이다. 본원 발명은 저비중 고강성 공법 및 소재 개발에 따라 경량화 및 원가절감이 목적인 자동차 내외장 부품에 널리 이용될 수 있다.
Abstract:
The present invention relates to an eco-friendly plastic composition with excellent mechanical properties, and more specifically, to an eco-friendly plastic composition having plasticized cellulose diacetate and a thermoplastic resin as base materials, and polyvinylacetal compatibilizers, inorganic fillers which a silane coupling agent is combined, and elastomers which anhydride maleic acid is drafted are comprised herein in a certain content ratio, thereby having excellent mechanical properties and being replaceable for synthetic resins such as polypropylene used in existing materials for embedded parts in vehicles.
Abstract:
The present invention relates to a composite material composition capable of reducing the weight part through the reduction of a glass fiber by improving the mechanical properties such as flexural modulus, tensile strength, impact strength, and the likes by improving impregnation and compatibility between a polyolefin resin composition and glass fiber when improving the physical properties of the material through the increase of glass fiber lengthwise using an extrusion-ejection process. The present invention can be used widely in automotive interior and exterior components based on the developments of highly rigid materials to reduce the weight and costs. [Reference numerals] (AA) Extruding process + injecting process [molding process];(BB) Extruder;(CC) Injector
Abstract:
PURPOSE: A manufacturing method of a CNT/PP composite material is provided to improve mechanical properties of the composite material, and to obtain the excellent CNT/PP composite material with excellent dispersity. CONSTITUTION: A manufacturing method of a CNT/PP composite material comprises a step of manufacturing a PP powder/xylene mixture; a step of stirring the mixture at 100-150 deg. C for 1-3 hours; a step of manufacturing a CNT/xylene dispersion solution by mixing a carbon nanotubes(CNT) and xylene; a step of injecting swollen the CNT/xylene dispersed solution into the swollen PP powder/xylene mixture; a step of ultra-wave dispersing the result; and a step of removing solvent, deaerating the solvent, and manufacturing final CNT/PP powder.
Abstract:
PURPOSE: High-strength microalloyed steel for a crankshaft and a preparation method thereof are provided to obtain high-strength without adding Mn, which reduces the stability of high-frequency heat treatment, and V, which reduces the service life of a steel tool. CONSTITUTION: High-strength microalloyed steel for a crankshaft is mainly composed of Fe and includes 0.34-0.40wt.% of C, 0.20-0.35wt.% of Si, 0.03wt.% or less(0 is exclusive) of P, 0.70-0.90wt.% of Mn, 0.025-0.035wt.% of S, 0.30wt.% or less(0 is exclusive) of Cu, 0.25wt.% or less(0 is exclusive) of Ni, 1.05-1.25wt.% of Cr, 0.15-0.25wt.% of Mo, 0.025wt.% or less(0 is exclusive) of Al, 0.02-0.05wt.% of Nb, and inevitable impurities.
Abstract:
A device for testing the adhesive strength of a painting layer is provided to perform an exact de-lamination test by cutting a specimen of the paining layer into uniform intervals and depths through one-time reciprocation of the specimen by using a plurality of blades. A device for testing the adhesive strength of a painting layer includes a specimen cradle(12), a reversible motor(20), a guide rail(14), a fixing frame(35), a specimen fixing bar(22), specimen cutters, and a controller(44). The movable specimen cradle allows specimens of a painting layer to be set thereon. The reversible motor is mounted on a roller mounted on the bottom surface of the specimen cradle and the shaft of the roller. The guide rail(14) has a rail groove forming a rolling path of the roller. The fixing frame consists of vertical bars erected at two sides in the middle of the guide rail, and a horizontal bar. The specimen fixing bar is connected between inner surfaces of the vertical bars. The specimen cutters are fixed onto the fixing bar at regular intervals. The controller adjusts the speed of the reversible motor, and is used to on/off manipulation.