阅读说明：本技术 基于粘合剂组合物的用于制动衬块的具有低存储时间的摩擦材料和相关的制动衬块 (Friction material for brake pads based on adhesive composition with low storage time and related brake pad ) 是由 F·兰皮内利 A·邦凡蒂 A·圣圭内蒂 A·萨梅拉 L·博塔利科 于 2019-10-14 设计创作，主要内容包括：描述了具有减少的存储时间的摩擦材料,所述摩擦材料包含基于水硬性粘合剂的粘合剂组合物,以及它在制动衬块和工业应用的用途。(A friction material with reduced storage time is described, comprising a binder composition based on a hydraulic binder, and its use in brake pads and industrial applications.)

1. A friction material for a brake pad, the friction material comprising or consisting of:

i) multi-component brake pad composite and

ii) a binder composition or matrix based on a hydraulic binder comprising:

a) byHydraulic binder consisting of ordinary cement clinker, consisting of: at least two-thirds by mass of calcium silicate [3 CaO. SiO ]₂]And [2 CaO. SiO ]₂]The balance being Al₂O₃、Fe₂O₃And/or other minor oxide compositions;

b) an activator selected from one or more salts and/or hydroxides and/or oxides of alkali metals and/or alkaline earth metals and/or silicon;

c) one or more materials having pozzolanic activity or one or more materials having latent hydraulic activity and/or mixtures thereof,

said binder composition or matrix hardening by hydration reaction with water, characterized in that:

the fineness of the hydraulic binder a) is 10000 to 13000cm²In the range of 10500 to 12500cm, more preferably²In the range of/g, more preferably from 10700 to 12000cm²In the range of/g, measured according to the standard UNI EN 196-6:2010 air permeability method (Blaine), and

the fineness of component c) is from 6000 to 9000cm²In the range of 6700 to 8000cm, preferably²Measured according to the standard UNI EN 196-6:2010 air permeability method (Blaine).

2. A friction material according to claim 1, wherein the hydraulic binder a) is portland cement clinker type I, blast furnace cement type III, pozzolanic cement type IV and mixtures thereof, preferably portland cement clinker type I.

3. The friction material according to one or more of the preceding claims, wherein component b) of the binder composition ii) is selected from: silicon oxide, potassium oxide, sodium oxide, potassium hydroxide, sodium hydroxide and/or silicates, and preferably selected from: silicon oxide, potassium hydroxide and/or silicates.

4. The friction material according to one or more of the preceding claims, wherein component c) of the binder composition ii) is selected from: one or more materials having pozzolanic activity, such as preferably microsilica, fly ash, pozzolan, silica fume, metakaolin, and/or one or more materials having latent hydraulic activity, such as blast furnace slag, slaked lime, natural limestone, component c) preferably being blast furnace slag or metakaolin.

5. Friction material according to one or more of the preceding claims, wherein the binder composition ii) based on a hydraulic binder is present in an amount ranging from 3 to 60% by weight, relative to the total weight of the mixture constituting the friction material, and preferably in an amount ranging from 5 to 52% by weight, relative to the total weight of the mixture constituting the friction material.

6. The friction material according to one or more of the preceding claims, wherein hydraulic binder a) is present in an amount of 0.5 to 95% by weight, preferably 10 to 93% by weight, relative to the total weight of binder composition ii); the activator b) is present in an amount of 0.5 to 50% by weight, relative to the total weight of the adhesive composition ii); a material c) having pozzolanic and/or latent hydraulic activity, when present, in an amount of from 0.5 to 95% by weight, preferably from 10 to 93% by weight, relative to the total weight of the binder composition ii); possible aggregates are present in an amount of 0 to 20% by weight, relative to the total weight of the binder composition ii); the various types of possible additives are present in an amount of 0 to 5% by weight, relative to the total weight of the adhesive composition ii).

7. Friction material according to one or more of the preceding claims, wherein the total water addition is comprised between 25 and 150% by weight, preferably between 50 and 150% by weight, with respect to the total weight of the binder composition based on the hydraulic binder ii).

8. Friction material according to one or more of the preceding claims, wherein the multicomponent brake pad composite i) is present in an amount of 30 to 97% by weight, preferably 50-95% by weight, with respect to the total weight of the mixture constituting the friction material.

9. The friction material according to one or more of the preceding claims, wherein the multi-component brake pad composite i) comprises: at least one lubricant in an amount of 5 to 15 wt.%; at least one abrasive in an amount of 8 to 25 wt.%; at least one carbon-containing component in an amount of 8 to 25 wt.%; at least one modifier in an amount of 15 to 30 weight percent, all amounts being calculated relative to the total weight of the multi-component brake pad composite i).

10. Friction material according to one or more of the preceding claims, wherein the friction material consists of:

i) a multi-component brake pad composite comprising components preferably selected from the group consisting of: metal oxides, steel fibers, aramid fibers, chromite, metal sulfides, graphite, coke, metal powders, and barite; and

ii) an adhesive composition based on: a) the fineness is 11840cm²52.5 parts per gram of Portland cement type I, b) potassium silicate and potassium hydroxide, or sodium hydroxide, alone or in a mixture, c) having a fineness of 6760cm²Slag/g, and water.

11. Brake pad consisting of a metallic supporting substrate and a friction material according to one or more of claims 1-10.

12. Use of a friction material according to any of claims 1 to 10 as a brake pad and other industrial applications, said friction material comprising a binder composition based on a hydraulic binder and a multicomponent brake pad composite.