| 摘要 |
A non-asbestos friction material made by molding and curing a composition comprised of a fibrous base, a binder, and a filler has a 100 Hz vibration damping factor (tan delta) at 300° C. minus tan delta at 50° C. value of at least -0.030. The binder may be a rubber-modified high-ortho phenolic resin, a resin mixture of a rubber-modified high-ortho phenolic resin and a rubber-modified phenolic resin, or a resin mixture of two or more rubber-modified phenolic resins. The friction material has an excellent and long-lasting noise performance, and good wear resistance, functional stability, and fade resistance. The rapid curability of the composition enables a short molding cycle.
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