C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 7/02 (2006.01) C08J 5/14 (2006.01) C08L 101/00 (2006.01) F16D 69/02 (2006.01) H02N 2/00 (2006.01) H01L 41/09 (2006.01)
Patent
CA 2090559
Abstract The present invention provides a friction material composition which, when used in an ultrasonic motor, is su- perior in abrasion resistance and yet gives rise to no sharp reduction in number of rotations in continuous operation of the motor, and a process for producing said friction mate- rial composition. The present friction material composition comprises at least a polyacrylonitrile-based carbon fiber, a fiber component other than said polyacrylonitrile-based carbon fiber, and a thermosetting resin; and the present process for producing a friction material composition comprises dis- persing, in a dispersing medium, at least a polyacryloni- trile-based carbon fiber, a fiber component other than said polyacrylonitrile-based carbon fiber, and a thermosetting resin, filtering the dispersion through a filter material, and subjecting the sheet-shaped material remaining on the filter material to molding under heating and pressure.
Nisshinbo Industries Inc.
Smart & Biggar
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