The present disclosure relates to wet-milled and dried carbonaceous sheared nano-leaves generally characterized by a BET SSA of less than about 40 m.sup.2/g and a bulk density from about 0.005 to about 0.04 g/cm.sup.3, and compositions comprising such carbonaceous sheared nano-leaves. The present disclosure further relates to methods for preparing them, and their use as a conductive additive in composites such as polymer blends, ceramics, and mineral materials, or as solid lubricant.

There is provided a sintered friction material for railway vehicles that has excellent frictional properties and wear resistance even in a high speed range of 280 km/hour or more. The sintered friction material for railway vehicles is a green compact sintered material containing, in mass %, Cu: 50.0 to 75.0%, graphite: 5.0 to 15.0%, one or more selected from the group consisting of magnesia, zircon sand, silica, zirconia, mullite, and silicon nitride: 1.5 to 15.0%, one or more selected from the group consisting of W and Mo: 3.0 to 30.0%, and one or more selected from the group consisting of ferrochromium, ferrotungsten, ferromolybdenum, and stainless steel: 2.0 to 20.0%, with the balance being impurities.

A friction material, such as those belonging to the NAO or LS classes. The friction material is substantially free from copper and includes non-spherical particles in the form of powders and/or fibres each constituted by a preferably ferrous metallic core and by an at least partial coating of core formed at least partially or totally by tin and/or tin compounds, such as intermetallic FeSn compounds.

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.

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.

The invention provides a friction material and a method of making the friction material. The friction material comprises man-made vitreous fibres whose chemical composition comprises: less than 2 wt % Fe.sub.2O.sub.3; 30-40 wt % MgO+CaO; 35-45 wt % SiO.sub.2; 17-24 wt % Al.sub.2O.sub.3; and 1-5 wt % K.sub.2O+Na.sub.2O.

The present invention comprises a flexible coupling device, system and method for transferring high torque loads and complex rotary motion between components or devices. Specifically, high torque loads and complex rotary motions are transmitted from a motor, through and to an input shaft and to an output shaft, by way of a polygonal-shaped, flexible coupling, wherein one component or device may be misaligned with the input shaft. The flexible coupling consists of a reciprocating polygonal ball and socket design exhibiting a spherical, convex cap component made to provide variations and adjustments in alignment though a pivot point where rectangular, flat wear plates are utilized to evenly distribute received weight and elastomeric seals about the neck of the polygonal ball seal functionally sensitive components within a lubricating chamber.

Provided is a friction material that includes a boron-containing solid lubricant. The friction material may be used to form a brake pad for automotive vehicles. The friction material may include, by weight, about 1.0% to about 6.0% of the boron-containing solid lubricant, about 5.0% to about 15.0% of a fibrous or powdered metal material, an abrasive, an organic filler, an inorganic filler, and a binder. Advantageously, an antimony free and copper free friction material of the present disclosure may still achieve high friction performance and long pad life, providing a more environment friendly solution to brake systems.

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.

[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 later crystal structure titanate, which has the alkali elution rate of 0.1-2.5 mass %, relative to the total amount of the friction material composition. Preferably, in the friction material, the titanate is a magnesium potassium titanate, and as the friction modifier, 5-25 mass % of a monoclinic crystal zirconium oxide relative to the total amount of the friction material composition and 1-5 mass % of a fibrillated organic fiber as the fiber base material relative to the total amount of the friction material composition are contained.