| 摘要 |
<p>A non-asbestos friction material includes a fibrous reinforcement, a friction modifier, a binder, and a soluble amorphous substance mixed as friction material components. The soluble amorphous substance is a composition composed of SiO2 as a principal component, 18 to 40 wt % of at least one kind of CaO and MgO, less than 10 wt % of at least one kind of Al2O3 and ZrO2, and less than 2 wt % of at least one kind of Na2O, K2O, FeO and Fe2O3. Preferably, the soluble amorphous substance is mixed in a range of from 1 wt % to 30 wt % of a total of the friction material. Preferably, the soluble amorphous substance is fibrous or granular.</p> |
