▎ 摘　　要

NOVELTY - Modification of polyester masterbatch with graphene material comprises adding graphene material dispersion at 2-4 mL/minute to reaction system during esterification of terephthalic acid and ethylene glycol, and polycondensing the esterification reaction product to obtain primary product. USE - Method for modifying polyester masterbatch for spinning application (claimed). ADVANTAGE - The method can realize uniform dispersion of graphene material on small molecular level. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a graphene material-modified polyester masterbatch containing 0.5-4.5 wt.% graphene material and 0.1-3 wt.% nanocellulose. The weight ratio of ethylene glycol and terephthalic acid in the polyester masterbatch is 1:2-4.