Preparation and properties of composite conductive polyester fibers with irregular cross sections
Four kinds of conductive polyester fibers with specifications of 22 dtex/3 f were designed and prepared using differ-ent cross sections(one-line,two-point,three-point and sheath-core),and the cross section shape,finished product color,orientation degree,tensile properties,electrical conductivity,and thermal stability of the fibers were tested and compared.The results show that regardless of whether the cross section was selected,the fibers with added conductive carbon nanotube/carbon black conductive masterbatch exhibit excellent conductivity(unit resistance is in the magnitude of 107 Ω/cm).Compared to sheath-core shaped conductive fibers,the use of irregular cross sections(one-line,one-point,and three-point)reduces the uniformity inside the fibers to some extent,increases the difficulty of fiber orientation during the preparation process,leading to the slight decrease of fiber orienta-tion and tensile breaking strength,but the thermal stability of the four kinds of fibers has little difference.Irregular cross section conductive fibers can achieve conductivity similar to sheath-core shaped conductive fiber,but due to the reduction of exposed carbon nanotube/carbon black conductive components in fibers with irregular cross sections,the color of the fiber products is signifi-cantly lighter than that of the sheath-core shaped fiber product,expanding the application range of these types of conductive fibers.
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