COMPOSITION FOR FORMING FRICTION MATERIAL, METHOD OF FORMING FRICTION MATERIAL FOR ULTRASONIC MOTOR FROM THE COMPOSITION, AND ULTRASONIC MOTOR MEMBER CONTAINING THE FRICTION MATERIAL

摘要

PURPOSE: To obtain the subject composition which is useful for forming a bubble-free friction material for an ultrasonic motor without generating an unusable trim scrap by mixing a thermosetting resin with short inorganic fibers and a specific ingredient. ;CONSTITUTION: The objective composition comprises a thermosetting resin (e.g. a phenol resin or a rubber-modified phenolic resin), short inorganic fibers preferably having a length of 3 mm or shorter (e.g. carbon fibers or potassium titanate fibers), and a liquid component (e.g. dimethylformamide). It preferably further contains a friction regulator (e.g. a polytetrafluoroethylene resin).;COPYRIGHT: (C)1994,JPO&Japio