US 10,793,974 B2Granted

Method for preparing graphene-polyamide nanocomposite fiber

AssigneeNantong Qiangsheng Graphene Technology Co., Ltd.

InventorsYongxiao Bai, Xiaolin Sha, Yan Sha

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Abstract

The present invention discloses a method for preparing graphene-polyamide nanocomposite fiber. The method includes the following steps of: mixing polyamide chips with graphene or modified graphene, and then extruding and palletizing to obtain graphene-polyamide masterbatch; melt-spinning the graphene-polyamide masterbatch after drying the same, to prepare the graphene-polyamide nanocomposite fiber. Compared with the existing industrial polyamide composite fiber, the method of the present invention has the advantages of simple process and low cost, and can effectively improve the production efficiency and capacity; the modified graphene has such an excellent compatibility with the matrix that it can be uniformly dispersed in the matrix, so that the graphene reinforced phase is perfectly compounded with the polyamide matrix material, thereby greatly improving the performance of graphene-polyamide nanocomposite fiber.

Claims8

Dependent claims

A method for preparing graphene-polyamide nanocomposite fiber, wherein the method comprises steps of:

(S1) mixing polyamide chips and graphene or modified graphene, and then extruding and palletizing, and obtaining graphene-polyamide masterbatch;
and
(S2) melt-spinning after drying the graphene-polyamide masterbatch, and finally obtaining the graphene-polyimide nanocomposite fiber, wherein:
the graphene is graphene oxide or graphene;
the modified graphene is one or more members selected from a group consisting of a graphene oxide modified by coupling agent, a graphene oxide modified by cation surfactant, a graphene modified by alkyl bromide, a graphene modified by amino compound and a graphene modified by polyvinyl pyrrolidone and by polyvinyl alcohol;
the graphene modified by alkyl bromide is one or more members selected from a group consisting of a graphene oxide modified by bromododecane, a graphene oxide modified by bromohexadecane and a graphene oxide modified by bromooctadecane.

3 more elements

Dependencies are inferred from the claim text.