▎ 摘　　要

NOVELTY - Preparing graphene coated polyacrylonitrile fiber composite material, involves (1) placing polyacrylonitrile fiber into alkali solution at 90-120 degrees C and treating for 15-60 minutes, then washing using de-ionized water until it is neutral, drying to obtain polyacrylonitrile fiber, (2) soaking alkali treatment of polyacrylonitrile fiber, drying in silane coupling agent KH550 solution to obtain the modified fiber, (3) soaking the polyacrylonitrile fiber in graphite oxide dispersion liquid, drying, and (4) polyacrylonitrile fiber is single-layer graphite oxide modified as raw material. USE - For preparing graphene coated polyacrylonitrile fiber composite material (claimed). ADVANTAGE - The preparation method is simple, the graphene composite material is good, the degree of reduction is uniformly coated on polyacrylonitrile (PAN) surface composite material single threads resistivity market process wire is reduced by 6 the number of magnitude, comprising preparing a conductive fiber. DETAILED DESCRIPTION - Preparing graphene coated polyacrylonitrile fiber composite material, involves (1) placing the polyacrylonitrile fiber into the alkali solution, at 90-120 degrees C treating for 15-60 minutes, then using de-ionized water to wash until it is neutral, drying to obtain the polyacrylonitrile fiber after the alkali treatment, (2) soaking the alkali treatment of the polyacrylonitrile fiber, drying in silane coupling agent KH550 solution to obtain KH550 modified polyacrylonitrile fiber, (3) the single layer KH550 modified polyacrylonitrile fiber is soaked in the graphite oxide dispersion liquid, drying to obtain the single-layer graphite oxide modified polyacrylonitrile fiber, (4) the polyacrylonitrile fiber is the single-layer graphite oxide modified as raw material, repeating the step (2) and step (3) n times to obtain n+1 layers of graphite oxide modified polyacrylonitrile fiber, where I is less than n is less than 10, (5) in the dispersion to the n+1 graphite oxide modified polyacrylonitrile fiber graphite oxide, and then dripping hydrazine hydrate water solution, raising the temperature to 90-110 degrees C, reacting for 20-60 minutes hours, at last cooling, deionized water to wash the product, drying to obtain the finished product.