Graphene Composite Fiber and Method for Manufacturing the Same

摘要

Disclosed is a graphene composite fiber and a method for manufacturing the same. The graphene composite fiber includes a polymer material and graphene sheets which are 1˜10% by weight of the graphene composite fiber, each having a modified layer with first organic functional groups and second organic functional groups for forming chemical bonds with the surface of the graphene sheet and the polymer material, respectively. The polymer material is a thermoplastic polymer for enclosing the graphene sheets. The method includes steps of preparing graphene sheets, modifying the surfaces of the graphene sheets, adding melted polymer material, blending, forming composite raw particles through the granulator, and finally spinning to form the graphene composite fibers. The graphene composite fibers of the present invention are manufactured by simple processes and possess excellent mechanical strength, thermal conductivity and electrical conductivity, thereby replacing commonly used fibers.

主权项

1. A graphene composite fiber, comprising:
a plurality of graphene sheets being 1˜10% by weight of the graphene composite fiber, each graphene sheet formed of N graphene layers stacked, the graphene sheet comprising at least one modified layer on a surface of the graphene sheet, the modified layer comprising first organic functional groups for forming chemical bonds with the graphene layers and second organic functional groups; and a polymer material being a thermoplastic polymer for enclosing the graphene sheets and forming chemical bonds with the second organic functional groups, wherein N is one integer larger than 1 and less than 1,000, and the graphene sheets are aligned in parallel with an axis of the graphene composite fiber.