| 摘要 |
PROBLEM TO BE SOLVED: To provide a phenolic resin molding material which has high mechanical strengths, good electrical insulating properties and excellent sliding characteristics. SOLUTION: The phenolic resin molding material comprises, as essential ingredients, a high-molecular phenolic novolak resin having a number average molecular weight of 1,000-1,500, a fine powder of a polytetrafluoroethylene resin and a polyimide powder, and contains 5-40 wt.% of the fine powder of a polytetrafluoroethylene resin and 1-5 wt.% of the polyimide powder based on the whole molding material. |
