Porous hollow fiber conducting material and preparation method thereof

Abstract

The invention belongs to the field of functional fiber materials, and discloses a porous hollow fiber conducting material and a preparation method thereof. The preparation method comprises the following steps: dissolving polyacrylonitrile into an organic solvent, adding a pore-forming agent, stirring, and uniformly mixing to obtain a surface layer solution; dissolving a water-soluble high polymermaterial into deionized water to obtain a core layer solution; statically spinning the surface layer solution and the core layer solution to obtain a composite fiber material of a skin-core structure;soaking in a water bath, and freeze-drying to remove a core layer component to obtain a hollow fiber material; pre-oxidizing and carbonizing the hollow fiber material in an inert atmosphere, and etching the pore forming agent to obtain the porous hollow fiber conducting material. According to the porous hollow fiber conducting material, the skin-core structure of the conducting material is ensured, so that the conducting performance is high; the electric charge is prevented from gathering in virtue of the skin-core structure and the porous structure, so that the electric charge density is decreased, and the static resistance and the durability of the material are improved.

Description

technical field [0001] The invention belongs to the field of functional fiber materials, and in particular relates to a porous hollow fiber conductive material and a preparation method thereof. Background technique [0002] Carbon nanotubes have a large aspect ratio, excellent mechanical strength and good electrical and thermal conductivity, and are an ideal flexible conductive material; graphene is made of sp 2 The honeycomb structure composed of hybridized carbon atoms, the thickness of single-layer graphene is only 0.335nm, its light transmittance is as high as 97.7%, and the Young's modulus reaches 1TPa. It is the material with the highest strength and the thinnest thickness known so far. Because of its excellent flexibility and conductivity, it is considered to be an ideal material for the preparation of flexible conductive materials; both carbon nanotubes and graphene have good flexibility, excellent electrical and thermal conductivity, excellent physical and chemical ...

AI Technical Summary

Problems solved by technology

[0005] Most of the existing conductive fibers are processed by post-processing, mainly through chemical reactions on the surface of ordinary fibers, so that conductive polymers are adsorbed on the surface of fibers, so that ordinary fibers have electrical conductivity; conductive components are used to endow fibers with electrical conductivity, and here The conductive components used are conductive fillers, and most of them are directly coated with carbon black or other metal conductive paste on the surface of the fiber. Carbon black and metal conductive paste are easy to fall off on the surface of the fiber, and it is not easy to distribute evenly, resulting in poor antistatic durability.