Abstract: To provide the underlayer for a disc brake pad, which is positioned between a back plate and a friction material providing excellent brake noise suppression effect. The underlayer composition contains 5-15 weight % of the uncrosslinked fluororubber relative to the entire amount of the underlayer composition, 4-8 weight % of the phenol-based resin as the binder relative to the entire amount of the underlayer composition, and 0.3-2 weight % of the hexamethylenetetramine as the curing agent for the phenol-based resin relative to the entire amount of the underlayer composition.

Abstract: This invention relates to a friction material used for a disc brake pad, which is manufactured by forming a non-asbestos-organic (NAO) friction material composition that contains a binder, a fiber base material, a friction modifier, a lubricant, a pH adjuster, and a filler, which satisfies requirements for the required braking effectiveness, crack resistance, and fade resistance. The friction modifier contains 5-30 mass % of a magnesium potassium titanate, which has the alkali elution rate of 0.1-2.5 mass %, relative to the total amount of the friction material composition. Preferably, the titanate that may be contained in the friction modifier is a magnesium potassium titanate and 5-25 mass % of a monoclinic crystal zirconium oxide relative to the total amount of the friction material composition, and the fiber base contains 1-5 mass % of a fibrillated organic fiber relative to the total amount of the friction material composition.

Abstract: To provide the friction material for the disc brake pad manufactured by forming the NAO friction material composition, enabling to restrain the brake vibration during braking in a high temperature. The NAO friction material composition does not contain the copper component but contains, relative to the entire amount of the friction material composition, 5-9 weight % of the binder with 1-4 weight % of the silicone rubber modified phenol resin as a part of the binder, the fiber base, 1-4 weight % of a cashew dust as the organic friction modifier, 0.5-3 weight % of a fused silica with the average particle diameter of 15-40 ?m as the inorganic friction modifier, and 0.1-2 weight % of the electromelting zirconium silicate beads with the average particle diameter of 10-30 ?m as the lubricant.

Abstract: [Object] To provide the friction material for the disc brake such as an automobile, which is manufactured by forming the NAO friction material composition, enabling to restrain the brake vibration during braking in a high temperature. [Means to Resolve] In the friction material for the disc brake pad, which is manufactured by forming the NAO friction material composition that does not contain the copper component but contains the binder, the fiber base, the organic friction modifier, the inorganic friction modifier, and the lubricant, the friction material composition contains 1-4 weight % of the cashew dust as the organic friction modifier relative to the entire amount of the friction material composition, 7-12 weight % of the muscovite as the inorganic friction modifier relative to the entire friction material composition, and 0.5-5 weight % of the aluminum particle as the inorganic friction modifier relative to the entire amount of the friction material composition.

Abstract: To provide the friction material for the disc brake pad manufactured by forming the NAO friction material composition that does not contain the copper component and does not generate the creeping groan and the seizure to mating surface due to corrosion but possessing sufficient braking effectiveness and wear resistance. The friction material composition relative to the entire amount of the friction material composition, has 2-10 weight % of the calcium silicate as one of the inorganic friction modifiers, 15-30 weight % of the non-whisker-like titanate as one of the inorganic friction modifiers, 1-9 weight % of the metal sulfide as one of the lubricants and 3-10 weight % of the graphite as one of the lubricants.

Abstract: To provide a friction pair having an excellent stability of a braking effect and wear resistance of a friction material, where the friction pair is consisting of a disc brake pad having a friction material manufactured from a friction material composition containing a binder, a fiber base material, and a friction modifier, but not containing a copper component and a ferrous-base metallic fiber, and a stainless steel disc rotor. The present invention uses a friction material composition that does not contain a metallic fiber other than a ferrous-base metallic fiber but contains 10-15 weight % of a carbonaceous lubricant as a friction modifier relative to an entire friction material composition, and 15-30 weight % of an inorganic friction modifier with Mohs hardness of 6 or more relative to the entire friction material composition, where a thermal conductivity of the friction material is 1.2-3.0 W/m·K.

Abstract: To provide a friction couple having an enhanced effect and stability in a low speed range, where the friction couple has a disc brake pad having a friction material manufactured from a friction material composition having a binder, a fiber base, and a friction modifier, without containing a copper component and a ferrous metallic fiber, and a stainless steel disc rotor. The present invention uses a friction material composition containing 20 - 30 weight % of a titanate relative to an entire friction material composition as an inorganic friction modifier without containing an inorganic friction modifier that has a Mohs hardness of 4 or less and is cleavable. The above-explained titanate is preferably a layer crystal structure lithium potassium titanate.

Abstract: To provide a friction pair capable of inhibiting to form a lump of a metal on a friction surface of a disc rotor, where the friction pair is consisting of a disc brake pad having a friction material manufactured from a friction material composition containing a binder, a fiber base material, and a friction modifier, but not containing a copper component and a ferrous-based metal fiber, and a stainless steel disc rotor. To use a friction material composition containing 1-6 weight % of a trimanganese tetraoxide as a friction modifier relative to an entire amount of the friction material composition but not containing any metal fiber.

Abstract: In the friction material used for the disc brake pad, which is manufactured by forming a non-asbestos-organic (NAO) friction material composition, it is an object of this invention to provide the friction material that satisfies the laws and regulations with respect to the amount of the copper component contained therein and at the same time inhibits the generation of the just-before-stopping noise. In the friction material used for the disc brake pad, which is manufactured by forming a non-asbestos-organic (NAO) friction material composition that contains the binder, the fiber base, the inorganic friction modifier, the organic friction modifier, and the lubricant but does not contain the copper component, the friction material composition contains 0.

Abstract: [Object] To provide the disc brake pad including the friction material having the friction surface with the scorch treatment that can provide sufficient braking effectiveness while preventing the fading phenomenon at the initial stage of the disc brake pad usage. [Means to Resolve] In the disc brake pad including the friction material having the friction surface with the heat history due to the scorch treatment, the friction surface has the mixed areas including the area with the large heat history of the scorch treatment and the area with relatively small heat history of the scorch treatment.

Abstract: [Object] To provide the method of manufacturing the friction material that is capable of uniformly scorching into the deep part of the surface layer of the friction material in a short period of time. [Means to Resolve] In the method of manufacturing the friction material including the scorching step of scorching the surface of the friction material with the laser, the friction material contains 5 to 25% by weight of one or more types of black materials relative to the total amount of the friction material composition, and the L* of the CIE Lab of the surface of the friction material before scorching is 20 to 60.

Abstract: [Object] This invention, on an assumption that the environmental situation must be considered, reduces the brake noise, prevents the reduction of the braking effectiveness in the high temperature range, and improves the wear resistance. [Means to Resolve] In the NAO friction material composition that does not practically contain a copper component, this invention contains the first substance made of such as the calcium carbonate that is the substance which becomes the sintered body during braking and is the precursor of the sintered body which keeps the powder generated from the disc rotor, and the second substance made of such as the fluoropolymer that is the sintering additive which aids sintering of the first substance.

Abstract: [Object] To provide the friction material for the disc brake such as an automobile, which is manufactured by forming the NAO friction material composition, enabling to restrain the brake vibration during braking in a high temperature. [Means to Resolve] In the friction material for the disc brake pad, which is manufactured by forming the NAO friction material composition that does not contain the copper component but contains the binder, the fiber base, the organic friction modifier, the inorganic friction modifier, and the lubricant, the friction material composition contains 1-4 weight % of the cashew dust as the organic friction modifier relative to the entire amount of the friction material composition, 7-12 weight % of the muscovite as the inorganic friction modifier relative to the entire friction material composition, and 0.5-5 weight % of the aluminum particle as the inorganic friction modifier relative to the entire amount of the friction material composition.

Abstract: [Object] To provide the friction material for the disc brake pad such as an automobile, which is manufactured by forming the NAO friction material composition, enabling to restrain the brake vibration during braking in a high temperature. [Means to Resolve] In the friction material, which is manufactured by forming the NAO friction material composition that does not contain the copper component but contains the binder, the fiber base, the organic friction modifier, the inorganic friction modifier, and the lubricant, the friction material composition contains 5-9 weight % of the binder relative to the entire amount of the friction material composition, 1-4 weight % of the silicone rubber modified phenol resin as a part of the binder relative to the entire amount of the friction material composition, 1-4 weight % of a cashew dust as the organic friction modifier relative to the entire amount of the friction material composition, 0.

Abstract: [Object] To provide the underlayer composition for the disc brake pad, which may be applicable to the manufacturing process of softening the rubber by heating even if the uncrosslinked fluororubber in the underlayer composition and the disc brake pad with an excellent brake noise suppression effect. [Means to Resolve] To use the underlayer composition containing 5-15 weight % of the uncrosslinked fluororubber relative to the entire amount of the underlayer composition, 4-8 weight % of the phenol-based resin as the binder relative to the entire amount of the underlayer composition, and 0.3-2 weight % of the hexamethylenetetramine as the curing agent for the phenol-based resin relative to the entire amount of the underlayer composition.

Abstract: [object] To provide the friction material for the disc brake pad, which is manufactured by forming the NAO friction material composition that does not contain the copper component and does not generate the creeping groan and the seizure to mating surface due to corrosion but possessing sufficient braking effectiveness and wear resistance. [means to resolve] For the friction material composition, the friction material composition having 2-10 weight %, relative to the entire amount of the friction material composition, of the calcium silicate as one of the inorganic friction modifiers, 15-30 weight %, relative to the entire amount of the friction material composition, of the non-whisker-like titanate as one of the inorganic friction modifiers, 1-9 weight %, relative to the entire amount of the friction material composition, of the metal sulfide as one of the lubricants and 3-10 weight %, relative to the entire amount of the friction material composition, of the graphite as one of the lubricants, is used.

Abstract: [Object] To provide the method of manufacturing the friction material that is capable of uniformly scorching into the deep part of the surface layer of the friction material in a short period of time. [Means to Resolve] In the method of manufacturing the friction material including the scorching step of scorching the surface of the friction material with the laser, the friction material contains 5 to 25% by weight of one or more types of black materials relative to the total amount of the friction material composition, and the L* of the CIE Lab of the surface of the friction material before scorching is 20 to 60.

Abstract: [Object] This invention relates to a friction material used for a disc brake pad, which is manufactured by forming a non-asbestos-organic (NAO) friction material composition that contains a binder, a fiber base material, a friction modifier, a lubricant, a pH adjuster, and a filler, which satisfies requirements for the required braking effectiveness, crack resistance, and fade resistance. [Means to Resolve] The friction material, which is made from the NAO friction material composition, which includes the binder, the fiber base material, the friction modifier, the lubricant, the pH adjuster, and the filler, where the friction modifier contains 5-30 mass % of a magnesium potassium titanate, which has the alkali elution rate of 0.1-2.5 mass %, relative to the total amount of the friction material composition.

Abstract: [Object] The present invention provides a friction material used for a disc brake pad, which is manufactured by forming a non-asbestos-organic (NAO) friction material composition that does not contain a copper component, which provides an excellent wear resistance and a highly stable braking effectiveness even after being subjected to a history of high temperatures and high loads. [Means to Resolve] The friction material composition for the friction material molding containing, as an inorganic friction modifier, 10-40 weight % of a monoclinic zirconium oxide with an average particle diameter of 1-8 ?m relative to the total amount of the friction material composition, 1.

Abstract: The present invention addresses the problem of providing a friction material for a disc brake pad, which is able to secure effective braking performance and wear resistance during the high speed and high load braking while satisfying laws and regulations relating to copper content. The solution to this problem is using a non-asbestos organic (NAO) friction material for a disc brake pad, which is formed by molding a friction material composition comprising a fiber base material, a binder, and a friction modifier, and specially comprising, as an inorganic friction modifier, 1-10 weight % of one or any combination of two or more of aluminum particles, aluminum fibers, alloy particles mainly containing aluminum, and alloy fibers mainly containing aluminum relative to the total amount of the friction material composition, 5-20 weight % of hard inorganic particles with an average particle diameter of 1-20 ?m and a Mohs hardness of 4.5 to 8.0, and copper content of less than 0.5 weight %.