| 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 resol resin (A), a novolak resin (B) and a fine tetrafluoroethylene resin powder (C), and contains 30-50 pts.wt. of the resol resin (A), 5-15 pts.wt. of the novolak resin (B) and 0.1-40 pts.wt. of the fine polytetrafluoroethylene resin powder (C) based on the whole molding material, the resol resin (A) being a methylene-linked resol resin and/or a dimethylene ether-linked resol resin, the novolak resin (B) having a number average molecular weight of 1,000-1,500. |
