CONDUCTIVE MULTIFILAMENT YARN AND CONDUCTIVE BRUSH

摘要

Disclosed is a conductive multifilament yarn for forming a conductive brush, the yarn comprising conductive fibers obtained by coating the surface of synthetic fibers with carbon nanotubes. The synthetic fibers each may have a fineness of 30 dtex or less. The synthetic fibers each may have 3-6 recesses or grooves extending in the lengthwise direction, and have a cross section in the shape of a multi-blade leaf or in a star shape. The conductive multifilament yarn has high conductivity and may have an electrical resistance at 20ºC of 1×106-1×1011 O/cm. The conductivity of the yarn is highly even, and the standard deviation of the logarithm of the electrical resistance may be 1.0 or less. Since the conductive multifilament yarn has even and advanced conductivity characteristics (electrification or charge neutralization characteristics), which are required of conductive brushes for electrophotographic devices, the yarn is suitable for use as a cleaning brush for electrophotographic devices.