| 摘要 |
PURPOSE:To increase the porosity of a friction material to thereby prevent noise and fade, and to decrease the variation of the coefficient of friction at high temperature, by incorporating specified light-weight hollow carbonaceous microspheres into main ingredients of a friction material. CONSTITUTION:5-30vol% light-weight hollow carbonaneous microspheres having a particle diameter of 100-500mu are incorporated into 100vol% main ingredients comprising a reinforcement material, a friction modifier, and a thermosetting resin for bonding these ingredients to each other to be molded.
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