A kind of composite conductive fiber and preparation method thereof

Abstract

The invention discloses a novel composite conductive fiber which has a skin-core type structure, wherein the component of the skin layer is water-soluble polyester, and the component of the core layer is polymer containing conductive micro-powder, including polyester, polyamide and the like. The weight ratio of the skin layer to the core layer is 10:90-80:20; the content of the conductive micro-powder in the core layer is 20%-50%; structures of the skin and core layers of the fiber can be round or special-shaped. The fiber of the invention is produced by composite spinning equipment and composite spinning technology; the prepared skin-core type fiber is subjected to alkali treatment to remove the water-soluble polyester in the skin layer, so as to obtain the conductive fiber formed by the polymer containing conductive micro-powder of the core layer; the conductive component is high in content, a lot of conductive micro-powder contact a surface, so the fiber is low in surface resistivity, excellent in conductivity, and widely applicable to various antistatic fabrics and products; good antistatic effect can be achieved by only adding a few of the fibers.

Description

technical field [0001] The invention belongs to the technical field of functional fiber manufacturing, and relates to a conductive fiber with excellent electrical conductivity and a preparation process thereof. Background technique [0002] Composite conductive fiber is a kind of conductive fiber obtained by adding conductive particles such as carbon black, TiO2, SnO2, ZnO, CuI, etc. to the polymer. Its conductive principle is that when the content of conductive filler in the polymer filling system reaches a critical point, The conductive particles form a conductive channel in the matrix, and the polymer changes from an insulator to a semiconductor, so that its own resistance drops sharply, and it plays the role of conduction, that is, anti-static. Its conductivity mainly depends on the type of particles used, the type of polymer, the dispersion form of conductive particles in the matrix, the content of conductive particles, the morphology of the polymer matrix, and the mold...

AI Technical Summary

Problems solved by technology

However, adding a large amount of conductive particles reduces the spinnability of the fiber-forming polymer, reduces the yield of the fiber, increases the cost, and also affects the mechanical and textile properties of the fiber.