▎ 摘　　要

NOVELTY - Preparing warm-keeping functional polyester fiber comprises (i) mixing and modifying graphene material with modifying agent; (ii) uniformly mixing the modified graphene obtained in the step (i) with aerogel particles to obtain mixture; (iii) mixing and melting the mixture obtained in the step (ii) with polyester slice to obtain functional master batch; and (iv) mixing the functional master batch obtained in the step (iii) with polyester slice, melting and spinning. USE - The method is useful for preparing warm-keeping functional polyester fiber used for civil fabric and industrial fabric, winter clothes, home textile and other fields. ADVANTAGE - The method is simple and easy to operate, and has obvious effect is obvious, and realizes the obtained fiber has excellent thermal performance, endows the fiber far infrared heating function, improves the performance of the common polyester fiber, and widens the use range and suitable for industrial large-scale production and application. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a warm-keeping functional polyester fiber is prepared by above mentioned method.