| 摘要 |
Asbestos-free organic friction material, in particular for producing brake pads and shoes for vehicles made up of a composition or mixture having a fibrous base, a filler, and an organic binder. The composition is completely free of copper and copper compounds or alloys and includes in the fibrous base, together with inorganic and/or organic fibers, from 1% to 10% by volume, calculated relative to the total volume of the composition, of stainless steel fibers. |
| 主权项 |
1. An asbestos-free organic friction material, for producing brake pads and shoes for vehicles made up of a composition or mixture, said friction material comprising:
a fibrous base: a filler; and an organic binder, wherein said composition is completely free of copper and copper compounds or alloys and includes in the fibrous base, together with inorganic and organic fibers, from 1% to 10% by volume, calculated on the total volume of the composition, of stainless steel fibers; in which said composition also comprises from 1% to 25% by volume of a “system of fibrous oxides” made of a metallic titanate, preferably potassium hexatitanate (K2Ti6O13) or other potassium and/or sodium titanates, with the addition of zirconia, in variable proportions; and in which the ratio between the percentage content by volume of zirconia and that of titanate is between 1:1 and 1:2. |
