Power Steering Hose Composition for a low pressure

• Main Author: NAM, SANG UK
• Format: Patent
• Language: English; Korean
• Published: 07.01.2004
• Edition: 7
• Subjects: BLASTING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THEIR PREPARATION OR CHEMICAL WORKING-UP; THERMAL INSULATION IN GENERAL; WEAPONS

PURPOSE: A power steering hose composition for a low pressure is provided, to improve the heat resistance and the durability by employing a chlorinated polyethylene rubber to inner and outer side rubbers. CONSTITUTION: The hose composition comprises an inner side rubber(1) comprising a nitrile butadiene rubber; a polyethylene-based flaky fiber layer(2); and an outer side rubber(3) comprising a chloroprene rubber, wherein the inner side rubber and the outer side rubber contain the chlorinated polyethylene rubber whose Cl content is 35-40 wt% as a main component. Preferably the inner side rubber comprises 100 parts by weight of the chlorinated polyethylene rubber; 50-65 parts by weight of carbon black; 28-32 parts by weight of a process oil; 23-27 parts by weight of zinc oxide; 18-22 parts by weight of an antiaging agent; 2.5-3.5 a vulcanizing accelerator; and 0.5-0.6 parts by weight of a vulcanizing agent. Preferably the outer side rubber comprises 100 parts by weight of the chlorinated polyethylene rubber; 50-65 parts by weight of carbon black; 28-32 parts by weight of a process oil; 18-22 parts by weight of zinc oxide; 18-22 parts by weight of an antiaging agent; 2.5-3.5 a vulcanizing accelerator; and 0.5-0.6 parts by weight of a vulcanizing agent. Preferably the carbon black is the fast extrusion furnace carbon black. 본 발명은 저압용 파워 스티어링 호스 조성물에 관한 것으로서, 더욱 상세하게는 파워 스티어링 호스 조성물을 구성하는 내면고무 및 외면고무의 주성분으로 클로리네이티드 폴리에틸렌 러버(Chlorinated polyethylene rubber)를 사용함으로써 내열성 및 내구력이 매우 우수한 저압용 파워 스티어링 호스 조성물에 관한 것이다.