▎ 摘　　要

NOVELTY - Composite fibers comprises ceramic fibers, graphene quantum dots and resins, where ceramic fiber is nano-titanium dioxide fiber, graphene quantum dots are dispersant-containing graphene quantum dots, and resin is modified phenolic resin. USE - Used as composite fibers. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing composite fibers comprising (i) preparing titanium dioxide precursor solution by sol-gel method, adding polyvinyl acetate solution mixture, electrospinning to form spinning film, sintering spinning film at high temperature to obtain nano-titanium dioxide fiber membrane, crushing nano-titanium dioxide fiber membrane to form nano-titanium dioxide fiber powder, (ii) adding graphene quantum dots into deionized water, adding dispersant, dispersing the mixture at 1000-2000 W for 1-3 hours to obtain aqueous solution of graphene quantum dots, and drying aqueous solution of the graphene quantum dots by vacuum pumping to obtain dispersant-containing graphene quantum dots, and (iii) heating modified phenolic resin at 120-130 degrees C to melt, adding nano-titania fiber powder and dispersant-containing graphene quantum dots, raising the temperature to 150-160 degrees C, stirring at a rate of 750-1000 revolution per minute, insulating into the system into gel-type product, and melt spinning to obtain final product.