▎ 摘　　要

NOVELTY - Silane coupling agent modified graphene/polyethylene terephthalate barrier composite material has nano-scale crystalline structure exists in the microstructure of the barrier composite material, where the barrier composite material comprises modified graphene as filler and polyethylene terephthalate as matrix resin. The modified graphene is prepared from raw material comprises original graphene and a silane coupling agent. USE - Silane coupling agent modified graphene/polyethylene terephthalate barrier composite material used in the fields of flexible lighting, flexible wearable optoelectronic devices, and artificial ligaments (claimed). ADVANTAGE - The silane coupling agent modified graphene/polyethylene terephthalate barrier composite material significantly improves toughness of the composite material, significantly improves strength with excellent barrier properties. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a silane coupling agent modified graphene/PET barrier composite material, which involves using silane coupling agent in the reaction medium to agitate the original graphene to perform surface graft modification, and mixing modified graphene obtained by the reaction with polyethylene terephthalate, and subjecting to multi-stage stretching and extrusion to obtain final product.