▎ 摘　　要

NOVELTY - The method involves adding chlorinated modified graphene to polyamide 6, compounding and molding to obtain graphene modified polyamide 6 composite fiber, where the chlorinated modified graphene is prepared by (S1) coating silicon dioxide on graphene oxide, obtains the graphene oxide coating silicon dioxide, (S2) carrying out acid chloride treatment to the graphene oxide coated with silicon dioxide, then grafting L-glutamic acid to obtain the graphene of grafting treatment, and (S3) using 5,5-dimethyl-3-(3'-triethoxysilylpropyl) hydantoin to modify the grafted graphene to obtain modified graphene, and chlorinating modified graphene to obtain chlorinated modified graphene. USE - Method for preparing graphene-modified polyamide 6 composite fiber. ADVANTAGE - The composite fiber has high breaking strength and good bacteriostatic effect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for graphene-modified polyamide 6 composite fiber.