The invention relates to a high-performance
polyamide-based dyeable conductive
fiber and a preparation method thereof, belonging to the field of composite conductive fibers. The
fiber provided by the invention employs a three-layer concentric circle structure which comprises three components, i.e., a highly-conductive medium
carbon black component, a shielding composite substance component and a white conductive component in a
mass ratio of 5-30%: 20-30%: 50-65%, wherein an inner layer, a middle layer and an outer layer are the highly-conductive medium
carbon black component, the shielding composite substance component and the white conductive component respectively, or are the highly-conductive medium
carbon black component, the white conductive component and the shielding composite substance component respectively. The
fiber provided by the invention has improved
conductivity and maintains original whiteness and dyeability. According to the invention, a
metal oxide and a conductive intrinsic
polymer are blended and granulated during preparation of white dyeable conductive master batch, so the characteristics of the two white conductive additive are integrated; and
polyamide carrier resin is added to adjust a fusion index, so fluidity is improved, and the
conductivity of the eventually prepared fiber is improved.