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Abstract

A preparation method for a large crystal region high crystallinity carbonaceous fiber, where a wet spinning method is mainly used to assemble graphene oxide and other polymer materials in liquid phase, a two-dimensional graphene oxide sheet performs a “template orienting effect” on polymer molecules, making the directional crystallization of polymer molecules, resulting in fiber with high orientation and crystallinity. Graphene sheet catalyzes pyrolyzed molecules through a “graphitization inducing effect” to directionally generate graphene-like carbon layers after following high temperature treatment, thereby promoting stacking behavior of graphene sheets, and a composite carbonaceous fiber with an optimal crystallinity is prepared. The graphene fiber material prepared by the present method has characteristics of low cost, high crystallinity and high performance, and can be applied to a field of lightweight structural materials. The present invention is a high crystallinity graphene fiber material with two-dimensional induction effect and a preparation method for the same.

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First Claim