| 摘要 |
PROBLEM TO BE SOLVED: To provide a friction material composition suitable for a friction material which has little deleterious effect on the noise and vibration damping property, the braking property or the wear resistance and shows an excellent rustproof property, and a friction material prepared using this friction material composition. SOLUTION: A friction material composition comprises from 0.2 to 5 wt.% alkali metal salt against the total weight of the composition. A friction material is prepared by heat pressure molding the friction material composition.
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