| 摘要 |
PURPOSE:To obtain the subject composition composed of an aromatic polyamide fiber, a polytetrafluoroethylene resin, lead oxide and a heat resistant synthetic resin and capable of exhibiting good sliding characteristics without imparting damage to the opposite material from ordinary temperature to high-temperature region. CONSTITUTION:This composition is composed of (A) 10-30vol.% of an aromatic polyamide fiber, (B) 5-20vol.% of polytetrafluoroethylene resin (preferably having 25mum average particle diameter), (C) 0.1-5vol.% of lead oxide (preferably lead monoxide) and (D) the remainder of a heat resistant synthetic resin. Furthermore, polyether sulfone, polyether imide, etc., is preferably used as the component D when the composition is used at 200$%oC and polyphenylene sulfide resin, polyimide resin, etc., is preferably used when the composition is used at 150 deg.C. Further. 0.1-15% of melted material of a fluororesin such as tetrafluoroethylene-ethylene copolymer is added thereto in order to enhance abrasion resistance at room temperature. |
