Non-asbestos friction materials
AssigneeNisshinbo Industries, Inc.
InventorsMitsuru Kobayashi, Shinya Sawamura
Life of this patent
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Abstract
A non-asbestos friction material is obtained by molding and curing a composition comprising a fibrous base, a filler and a binder. The binder is present in a total amount V1 and the filler contains in part graphite present in an amount V2, each expressed in volume percent of the overall composition, such that the product V1×V2 is from 10 to 100 and the sum V1+V2 is from 10 to 30. When used as a brake lining in drum brakes, for example, the friction material exhibits low wear during high-speed braking, excellent heat resistance, stable braking effectiveness and good strength.
Claims4
A non-asbestos friction material obtained by molding and curing a composition comprising a fibrous base, a filler and a binder;
- wherein the filler is at least partially composed of 1 to 35 vol % of tar-containing cashew dust having a tar content of from 10 to 13 wt % and 1 to 4 vol % of graphite, based on the overall composition, and the binder is present in a total amount of at most 30 vol %;
- wherein the binder is present in a total amount V1 and the filler includes in part graphite present in an amount+V2, each expressed in volume percent of the overall composition, such that the product V1×V2 is from 20 to 80 inclusive, and the sum V1+V2 is from 17 to 28.
Dependencies are inferred from the claim text.