Abstract: Provided is a friction member (such as a disc brake pad) having light weight by reducing weight of a back plate and having improved durability after repeated braking. The friction member is specifically a friction member in which a friction material (overlying material) is disposed through an underlying material on one surface of a back plate comprising a material having a lower specific gravity than that of steel, wherein the underlying material comprises 30 mass % or more in total of a bonding material, an organic filler, and an organic fiber.

Abstract: The friction material composition, friction material and friction member are provided, in which copper, having serious environmental effects, is not contained or is not contained at more than 0.5 mass % of copper, rust adhering force is low, rust delamination is difficult to occur, the friction material composition includes a binder, an organic filler, an inorganic filler, and a fibrous substrate, wherein the friction material composition contains no copper as an element or contains not more than 0.5 mass % of copper, and contains fibrillated aramid fiber as the fibrous substrate, 0.2 to 2 mass % of sodium carbonate and 2.5 to 10 mass % of calcium hydroxide.

Abstract: Provided is a friction member (such as a disc brake pad) having light weight by reducing weight of a back plate and having improved durability after repeated braking. Specific examples of the friction member include a friction member having a friction material disposed on one surface of the back plate comprising a material having a lower specific gravity than that of steel, wherein heat conductivity in a thickness direction of the friction material is 0.40 W/m·K or less.

Abstract: A non-asbestos frictional material composition is provided, which is capable of provide a frictional material with low environmental load and with excellent friction coefficient, anti-crack properties, and abrasion resistance compared with conventional ones. Furthermore, a frictional material and a friction member formed by using this non-asbestos frictional material composition are provided. The non-asbestos frictional material composition containing a binder, an organic filler, an inorganic filler, and a fiber base material, includes: copper in a content of 5 mass % or less as a copper element; a metal fiber other than a copper fiber and a copper alloy fiber in a content of 0.5 mass % or less; cashew dust in a content of 1.5-4.5 mass % as the organic filler; zirconium oxide with a particle size of 30 ?m or less in a content of 30-45 mass % but not containing zirconium oxide with a particle size of more than 30 ?m as the inorganic filler.

Abstract: Provided by the present invention are: a non-asbestos frictional material composition containing a binder, an organic filler, an inorganic filler, and a fiber substrate, wherein, in the non-asbestos frictional material composition, content of a copper is 5% or less by mass as a copper element, content of a metal fiber other than a copper fiber and a copper alloy fiber is 0.5% or less by mass, and a titanate salt is contained therein with antimony trisulfide or zinc powders, with content of the titanate salt being in the range of 10 to 35% by mass; and a frictional material and a friction member that use the said non-asbestos frictional material composition.

Abstract: A non-asbestos frictional material composition is provided, which is capable of provide a frictional material with low environmental load and with excellent friction coefficient, anti-crack properties, and abrasion resistance compared with conventional ones. Furthermore, a frictional material and a friction member formed by using this non-asbestos frictional material composition are provided. The non-asbestos frictional material composition containing a binder, an organic filler, an inorganic filler, and a fiber base material includes: copper in a content of 5 mass % or less as a copper element; a metal fiber other than a copper fiber and a copper alloy fiber in a content of 0.5 mass % or less; and mica and graphite with a particle size of 90 ?m or less but not containing graphite with a particle size of more than 90 ?m.

Abstract: A friction material composition that does not contain copper, which has a high environmental load, or containing copper in such small amount as to be not more than 0.5 mass % and that enables decrease in brake vibration in braking at high temperatures when used in a friction material such that for an automobile disc brake pad, is provided. A friction material obtained by molding the friction material composition is also provided. The friction material composition contains a binder, an organic filler, an inorganic filler, and a fibrous base material, and the friction material composition contains no copper as an element or contains not more than 0.5 mass % of copper, and also contains 2 to 5 mass % of steel fibers that have fiber lengths of 2500 ?m or less.

Abstract: A non-asbestos frictional material composition is provided, which is capable of provide a frictional material with low environmental load and with excellent friction coefficient, anti-crack properties, and abrasion resistance compared with conventional ones. Furthermore, a frictional material and a friction member formed by using this non-asbestos frictional material composition are provided. The non-asbestos frictional material composition containing a binder, an organic filler, an inorganic filler, and a fiber base material, includes: copper in a content of 5 mass % or less as a copper element; a metal fiber other than a copper fiber and a copper alloy fiber in a content of 0.5 mass % or less; cashew dust in a content of 1.5-4.5 mass % as the organic filler; zirconium oxide with a particle size of 30 ?m or less in a content of 30-45 mass % but not containing zirconium oxide with a particle size of more than 30 ?m as the inorganic filler.

Abstract: The friction material composition, friction material and friction member are provided, in which copper, having serious environmental effects, is not contained or is not contained at more than 0.5 mass % of copper, rust adhering force is low, rust delamination is difficult to occur, the friction material composition includes a binder, an organic filler, an inorganic filler, and a fibrous substrate, wherein the friction material composition contains no copper as an element or contains not more than 0.5 mass % of copper, and contains fibrillated aramid fiber as the fibrous substrate, 0.2 to 2 mass % of sodium carbonate and 2.5 to 10 mass % of calcium hydroxide.

Abstract: The friction material and friction member are provided, in which copper, having serious environmental effects, is not contained or is not contained at more than 0.5 mass % of copper, rust adhering force is low, rust delamination is unlikely to occur, the friction material composition includes a binder, an organic filler, an inorganic filler, and a fibrous substrate, wherein the friction material composition contains no copper as an element or contains not more than 0.5 mass % of copper, and contains fibrillated aramid fiber as the fibrous substrate, and wherein porosity measured by oil immersing method is not more than 15% and sulfate ion concentration measured by ion chromatography is not more than 500 ppm.

Abstract: A friction material composition that enables a friction material, which contains no copper or contains not more than 0.5 mass % of copper, to maintain sufficient friction coefficient in fade conditions at high speed such that brake temperature rises abnormally by repeated rapid braking at deceleration of 0.8 G from a vehicle speed of 200 km/h, is provided. A friction material obtained by molding the friction material composition is also provided. The friction material composition contains a binder, an organic filler, an inorganic filler, and a fibrous base material, and the friction material composition contains no copper as an element or contains not more than 0.5 mass % of copper, and also contains 2 to 5 mass % of steel fibers that have fiber lengths of 800 ?m or more.

Abstract: A non-asbestos frictional material composition is provided, which is capable of provide a frictional material with low environmental load and with excellent friction coefficient, anti-crack properties, and abrasion resistance compared with conventional ones. Furthermore, a frictional material and a friction member formed by using this non-asbestos frictional material composition are provided. The non-asbestos frictional material composition containing a binder, an organic filler, an inorganic filler, and a fiber base material, includes: copper in a content of 5 mass % or less as a copper element; a metal fiber other than a copper fiber and a copper alloy fiber in a content of 0.5 mass % or less; cashew dust in a content of 1.5-4.5 mass % as the organic filler; zirconium oxide with a particle size of 30 ?m or less in a content of 30-45 mass % but not containing zirconium oxide with a particle size of more than 30 ?m as the inorganic filler.

Abstract: The friction material composition has superior conductivity of a friction material, superior adherence of a coating during powder coating, superior film formation of coating and superior abrasion resistance without containing copper having serious environmental effects, the friction material composition includes a binder, an organic filler material, an inorganic filler material, and a fibrous substrate material, wherein the friction material composition contains 8 to 35 mass % of ferrosoferric oxide (Fe3O4).

Abstract: A friction material composition that does not contain copper, which has a high environmental load, or containing copper in such small amount as to be not more than 0.5 mass % and that enables decrease in brake vibration in braking at high temperatures when used in a friction material such that for an automobile disc brake pad, is provided. A friction material obtained by molding the friction material composition is also provided. The friction material composition contains a binder, an organic filler, an inorganic filler, and a fibrous base material, and the friction material composition contains no copper as an element or contains not more than 0.5 mass % of copper, and also contains 2 to 5 mass % of steel fibers that have fiber lengths of 2500 ?m or less.

Abstract: A friction material composition includes a binder, organic filler, inorganic filler and fiber reinforcement, and does not contain copper or contains copper in an amount of 0.5 mass % or less. The inorganic filler is one or more selected from y alumina having an average particle size of 10 nm to 50 ?m, dolomite having an average particle size of 1 to 20 ?m, calcium carbonate having an average particle size of 1 to 20 ?m, magnesium carbonate having an average particle size of 1 to 20 ?m, manganese dioxide having an average particle size of 1 to 20 ?m, zinc oxide having an average particle size of 10 nm to 1 ?m, magnetite having an average particle size of 1.0 ?m or less, cerium oxide having an average particle size of 0.5 to 5 ?m, and zirconia having an average particle size of 5 to 50 nm.

Abstract: Provided by the present invention are: a non-asbestos frictional material composition containing a binder, an organic filler, an inorganic filler, and a fiber substrate, wherein, in the non-asbestos frictional material composition, content of a copper is 5% or less by mass as a copper element, content of a metal fiber other than a copper fiber and a copper alloy fiber is 0.5% or less by mass, and a titanate salt is contained therein with antimony trisulfide or zinc powders, with content of the titanate salt being in the range of 10 to 35% by mass; and a frictional material and a friction member that use the said non-asbestos frictional material composition.

Abstract: The non-asbestos frictional material composition containing a binder, an organic filler, an inorganic filler, and a fiber base material includes: copper in a content of 5 mass % or less as a copper element; a metal fiber other than a copper fiber and a copper alloy fiber in a content of 0.5 mass % or less; iron powder and tin powder as the inorganic filler in a total content of 1-12 mass %. The non-asbestos frictional material composition can provide a frictional material with excellent friction coefficient, anti-crack properties, and abrasion resistance even with the reduced content of copper and a copper fiber that possibly cause environmental pollution. The frictional material and the friction member are formed by using the above-mentioned non-asbestos frictional material composition.

Abstract: A non-asbestos frictional material composition is provided, which is capable of provide a frictional material with excellent shear strength, anti-crack properties, and abrasion resistance, even with the reduced content of copper. Furthermore, a frictional material and a friction member formed by using this non-asbestos frictional material composition are provided. The non-asbestos frictional material composition containing a binder, an organic filler, an inorganic filler, and a fiber base material includes: copper in a content of 0.5 mass % or less as a copper element; a metal other than copper and copper alloy in a content of 0.5 mass % or less; an acrylic elastomer-dispersed phenol resin as the binder in a content of 7-15 mass %; and Ca(OH)2 and/or CaO as the inorganic filler in a content of 1-5 mass %.

Abstract: Provided by the present invention are: a non-asbestos frictional material composition containing a binder, an organic filler, an inorganic filler, and a fiber substrate, wherein, in the non-asbestos frictional material composition, content of a copper is 5% or less by mass as a copper element, content of a metal fiber other than a copper fiber and a copper alloy fiber is 0.5% or less by mass, and a titanate salt is contained therein with antimony trisulfide or zinc powders, with content of the titanate salt being in the range of 10 to 35% by mass; and a frictional material and a friction member that use the said non-asbestos frictional material composition.

Abstract: A non-asbestos frictional material composition containing a binder, an organic filler, an inorganic filler, and a fiber base material includes: copper in a content of 0.5 mass % or less as a copper element; a metal fiber other than a copper fiber and a copper alloy fiber in a content of 0.5 mass % or less; cashew dust in a content of 3.5-10.0, wollastonite, and mica. The non-asbestos frictional material composition can provide a frictional material with excellent friction coefficient, anti-crack properties, and abrasion resistance even with the reduced content of copper and a copper fiber possibly causing environmental pollution. The frictional material and the friction member are formed by using the above-mentioned non-asbestos frictional material composition.