Cut-resistant and abrasion-resistant yarns including blends of technical fibers and mineral, inorganic, or ceramic fibers of substantially the same length as the technical fibers, and methods for manufacturing yarns, are disclosed.

A yarn for reinforcing composite material includes carbon nanotubes. The yarn has also been treated to promote interaction with a resinous matrix.

A yarn for reinforcing composite material includes carbon nanotubes. The yarn has also been treated to promote interaction with a resinous matrix.

The present invention relates to twisted yarn obtained by twisting a plurality of carbon fiber resins which are slit from a carbon fiber resin tape in which adhesive, alumina sol, and potassium persulfate permeate between a plurality of the carbon fibers spread flatly. An open yarn is obtained by S-twisting and Z-twisting covering yarn around the periphery of the twisted yarn. A carbon fiber covered twisted yarn is obtained by winding the twisted yarn around the periphery of a core material

The present invention relates to twisted yarn obtained by twisting a plurality of carbon fiber resins which are slit from a carbon fiber resin tape in which adhesive, alumina sol, and potassium persulfate permeate between a plurality of the carbon fibers spread flatly. An open yarn is obtained by S-twisting and Z-twisting covering yarn around the periphery of the twisted yarn. A carbon fiber covered twisted yarn is obtained by winding the twisted yarn around the periphery of a core material

Methods of forming composite materials, which may include filament winding two or more carbon nanotube yarns to form one or more material layers, contacting the yarns with a resin, and applying one or more stretching forces to the material layers. Composite materials also are provided.

Methods of forming composite materials, which may include filament winding two or more carbon nanotube yarns to form one or more material layers, contacting the yarns with a resin, and applying one or more stretching forces to the material layers. Composite materials also are provided.

An object of the present invention is to provide a CNT yarn having excellent conductivity and strength, and a method for producing the same. The present invention provides a drawn yarn comprising carbon nanotubes and having a drawing rate of 10 to 50%.

An object of the present invention is to provide a CNT yarn having excellent conductivity and strength, and a method for producing the same. The present invention provides a drawn yarn comprising carbon nanotubes and having a drawing rate of 10 to 50%.

The present invention relates to a core wire for a frictional power-transmission belt, the core wire including a Lang lay cord, having a total fineness of 300 to 1000 tex, and including a rubber component adhered to at least a part of a surface of the core wire, in which the Lang lay cord comprises a first-twisted yarn, and in which the first-twisted yarn comprises a carbon fiber.