▎ 摘　　要

NOVELTY - Preparation of PET-water-soluble polyester sea island fiber comprises spinning, cooling, cluster oiling and dry heat drafting processes. The raw materials comprises marine materials and island materials. The marine material is mixture of graphene and water-soluble polyester. The content of graphene is not less than2 wt.%. The island material is PET resin. The spinning melt is solidified to form primary fiber by cooling blowing at less than or equal to25degrees Celsius. The water-soluble polyester in primary fiber is heated and crystallized to crystallinity of 9.2-9.9% by hot blowing at greater than or equal to70degrees Celsius. The temperature of dry heat drawing is 80-90degrees Celsius. USE - The method is used for preparation of PET-water-soluble polyester sea island fiber. ADVANTAGE - The fiber has simple preparation and high tensile breaking strength.