| 摘要 |
PROBLEM TO BE SOLVED: To provide a wet paper friction material provided with both of high torque capacity and excellent thermal stability. SOLUTION: This wet paper friction material is manufactured by impregnating a paper material with a thermosetting resin, heating for solidification, and pressurizing for formation. A fiber basic material occupies 20-80 % of the paper material, and cellulose pulp, aramide pulp and single-polymer acrylic pulp adjusted at 120-280 ml of water filtration are contained. As the thermosetting resin, 20-40 wt.% of straight phenol resin, alkyl modified phenol resin, epoxy modified phenol resin, tung oil modified phenol resin, cashew oil modified phenol resin, tung oil/cashew oil modified phenol resin are contained to obtain high torque capacity, heat resistance and mechanical strength. COPYRIGHT: (C)2005,JPO&NCIPI |
