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US 10,895,299 B2Granted
Friction materials for brake pads based on binding compositions and related brake pads
AssigneesFreni Brembo S.p.A., Italcementi S.p.A.
InventorsRoberta Alfani, Andrea Bonfanti, Giovanni Cividini, Giuseppe Manganelli, Flavio Rampinelli, Alessandro Sanguineti, Federico Tosi
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Abstract
An improved friction material is described, comprising a binding composition based on a hydraulic binder, and its use in brake pads and industrial applications.
Claims17
A friction material for brake pads which comprises:
- i) a multicomponent braking blend comprising a metal and
- ii) a composition or binder matrix based on a hydraulic binder, comprising
- a) a hydraulic binder consisting of a cement clinker, composed of at least two thirds in mass of calcium silicates [3CaO.SiO2] and [2CaO.SiO2], and a remaining part consisting of Al2O3, Fe2O3 and/or other minor oxides;
- b) an activator selected from the group consisting of silicon oxide, potassium oxide, sodium oxide, potassium hydroxide, sodium hydroxide, potassium silicate, and combinations thereof;
- c) one or more materials having a pozzolanic activity, one or more materials having a latent hydraulic activity, and/or mixtures of the same;
- said composition or binder matrix adapted to be hardened by a hydration reaction with water;
- wherein the hydraulic binder a) is a Portland cement clinker of type I, a blast-furnace cement of type III, a pozzolana cement of type IV and mixtures thereof.
4 more elements
Dependencies are inferred from the claim text.