Abstract:
PURPOSE: A polyketone composition is provided to maintain durability, chemical resistance, fuel permeability, etc while maintaining performance of polyketone and to remarkably improve impact resistance. CONSTITUTION: A polyketone composition comprises 40-90 weight% of polyketone, 5-40 weight5 of polyamide, and 5-20 weight% of modified rubber. The flow index of the polyketone is 5-70 g/10min, the flow index of the polyamide is 5-70 g/10min and the flow index of the modified rubber is 0.5-30 g/10 min. The polyamide is one or more kinds selected from polyamide 6, polyamide 66, polyamide 6/66 copolymer, polyamide 610, polyamide 612, polyamide 11 and polyamide 12.
Abstract:
PURPOSE: A propeller shaft for vehicle is provided to minimize the length of a press part of a yoke by securing enough welding space to weld a correction weigh. CONSTITUTION: A propeller shaft for vehicle comprises a tube(11) and a press part(13). The tube is carbon fiber strengthening composite. The press part is formed on a yoke(12) to surround the outer circumference of end part of the tube and weld the yoke and the tube. A serration is formed in inner circumference of the press part. A correction weight is welded on the outer circumference of the press part for weight balancing.
Abstract:
본 발명은 고온 치수안정성이 우수하고 내충격성이 향상된 열가소성 수지 조성물에 관한 것으로, 더욱 상세하게는 고무 라텍스가 분산된 시안화 비닐 화합물-방향족 비닐 화합물의 그라프트 공중합체 (I); 시안화 비닐 화합물-방향족 비닐 화합물로 이루어진 중량평균분자량이 200,000∼1,000,000인 비선형 구조의 공중합체 (Ⅱ); 및 시안화 비닐 화합물-방향족 비닐 화합물로 이루어진 중량평균분자량이 100,000∼200,000인 선형 구조의 공중합체 (Ⅲ)가 특정 비율로 혼합된 수지 조성물에 관한 것으로, 상기 얻어진 수지 조성물은 종래 ABS 수지가 지닌 높은 선팽창 계수에 따른 충격강도 및 성형 수축률 저하의 문제점을 해결할 뿐만 아니라, 고온에서의 치수안정성을 증가시켜 자동차용 플라스틱 재료에 매우 적합하게 사용될 수 있다.
Abstract:
PURPOSE: Provided is a polyolefin-based resin composition for the interior or exterior trim of automobiles which is excellent in strength, impact resistance, heat resistance and stiffness and is free from the projection of weld line generation part. CONSTITUTION: The polyolefin-based resin composition comprises 30-85 wt% of an ultra-high crystalline olefin-based resin; 10-40 wt% of an ethylene-α-olefin-based copolymer rubber having a Mooney viscosity (ML1+4, 100 deg.C) of 10-100; 5-40 wt% of a glass bead whose surface is treated with a modified polypropylene grafted with an unsaturated carbonic acid or its anhydride; and 5-40 wt% of barium sulfate having an average diameter of 0.5-1 micrometers. Preferably the ultra-high crystalline olefin-based resin has a melt index of 10-80 g/10 min and its isotactic peptide fraction of homo-part is 95 % or more.