Graphene Composite Fiber and Method for Manufacturing the Same

Abstract

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.

Description

technical field [0001] The invention relates to a graphene-polymer composite fiber and a preparation method of the graphene composite fiber. Background technique [0002] In the current market, due to the advantages of light weight, high mechanical strength, and high elastic modulus, carbon fiber has attracted attention in the Tour de France, and has replaced magnesium and aluminum alloys in large quantities, becoming the most popular material in the bicycle industry. In addition, in aerospace Aviation, national defense and military industry, automobile industry and energy industry, etc., pay more attention to the advantages of carbon fiber in chemical inertness and semiconductor performance, and are also widely used. European patent EP1,696,046B1 discloses a method for preparing metal-matrix carbon fiber composite materials. In this patent, metal powder and carbon fibers in a specific arrangement are sintered into a composite material by pulse current sintering method. The ...

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Problems solved by technology

[0007] The above previous proposals all need to add chemical compounds to dissolve or increase crystallinity. As far as the current carbon fiber equipment is concerned, it cannot be immediately transferred, so even if graphene composite fibers with excellent properties can be prepared, However, the actual cost is high and additional equipment is required, and it still cannot be successfully introduced in the entire market. Therefore, a method with a simple process and close to the traditional textile process is needed, which can use current equipment to directly produce graphene composite fibers. material method

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