| 摘要 |
To provide a friction material with an excellent balance for both service brake and parking brake usage that satisfies the required performance for the service brake and improves the static coefficient of friction for the parking brake. The friction material comprising a fibrous base material, a friction modifier, and a binder, wherein said friction modifier comprises 2-20 volume % of cashew dust, 10-25 volume % of a rubber composition, and 2-5 volume % of a solid lubricant, a total volume of the cashew dust and the rubber composition is 30 volume % or less, and said friction modifier does not use graphite because it can cause the reduction of the coefficient of friction during the parking brake operation.
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