▎ 摘　　要

NOVELTY - Preparation of optical fiber coated polybutylene terephthalate material involves processing polyethylene-graphene material into powder, and spraying polyethylene-graphene powder on ordinary polybutylene terephthalate material by high-pressure cold-spraying process. USE - Preparation of optical fiber coated polybutylene terephthalate material. ADVANTAGE - The method enables preparation of optical fiber coated polybutylene terephthalate material having excellent strength, heat resistance, electrical insulating property, toughness, corrosion resistance, fluidity, water resistance, alkali resistance, acid resistance, hydrolysis resistance, oil resistance and fatigue resistance, and low oxidation degree and dielectric loss.