US 11,982,330 B2
Friction materials with low storage time for brake pads based on binder compositions and related brake pads
Flavio Rampinelli, Urgnano (IT); Andrea Bonfanti, Curno (IT); Alessandro Sanguineti, Curno (IT); Alessandro Samela, Curno (IT); and Luca Bottalico, Brusaporto (IT)
Assigned to HEIDELBERGCEMENT AG, Heidelberg (DE); and FRENI BREMBO S.P.A., Curno (IT)
Appl. No. 17/285,765
Filed by HeidelbergCement AG, Heidelberg (DE); and Freni Brembo S.p.A., Curno (IT)
PCT Filed Oct. 14, 2019, PCT No. PCT/IB2019/058737
§ 371(c)(1), (2) Date Apr. 15, 2021,
PCT Pub. No. WO2020/079562, PCT Pub. Date Apr. 23, 2020.
Claims priority of application No. 102018000009461 (IT), filed on Oct. 15, 2018.
Prior Publication US 2021/0388880 A1, Dec. 16, 2021
Int. Cl. F16D 69/02 (2006.01); C04B 7/52 (2006.01); C04B 14/02 (2006.01); C04B 14/48 (2006.01); C04B 22/06 (2006.01); C04B 22/14 (2006.01); C04B 28/02 (2006.01); C04B 28/04 (2006.01); F16D 65/092 (2006.01); C04B 103/10 (2006.01); C04B 111/00 (2006.01)
CPC F16D 69/028 (2013.01) [C04B 7/527 (2013.01); C04B 14/024 (2013.01); C04B 14/48 (2013.01); C04B 22/062 (2013.01); C04B 22/14 (2013.01); C04B 28/021 (2013.01); C04B 28/04 (2013.01); F16D 65/092 (2013.01); C04B 2103/10 (2013.01); C04B 2111/00362 (2013.01); F16D 2200/0065 (2013.01); F16D 2200/0073 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A friction material composition for brake pads comprising:
i) a multicomponent brake-pad compound; and
ii) a binder composition or matrix based on a hydraulic binder, comprising:
a) a hydraulic binder consisting of common cement clinker, composed for of at least two thirds by mass of calcium silicates [3CaO·SiO2] and [2CaO·SiO2], the remaining part consisting of at least one of Al2O3, Fe2O3, MgO and K2O, wherein said hydraulic binder a) has a fineness, measured according to the standard UNI EN 196-6:2010, air permeability method (Blaine), ranging from 10,000 to 13,000 cm2/g;
b) an activator selected from one or more salts and/or hydroxides and/or oxides of alkaline and/or alkaline earth metals and/or silicon; and
c) one or more materials having a pozzolanic activity, one or more materials having a latent hydraulic activity and mixtures thereof, wherein component c) has a fineness, measured according to the standard UNI EN 196-6:2010, air permeability method (Blaine), ranging from 6,000 to 9,000 cm2/g,
said binder composition or matrix being hardened by means of hydration reaction with water.