▎ 摘　　要

NOVELTY - Fiber preform comprises fiber and graphene oxide, carbon nanotubes (CNT), carbon black and carbon nanofibers. USE - The fiber preform is useful for manufacturing composite material in aircraft components and automobile parts (all claimed). ADVANTAGE - The fiber preform improves shape retention of fiber mat and affinity of fibers and resin without the use of polymeric binder, increases surface bonding between fiber and resin, and improves mechanical properties, preferably inter-laminar shear strength. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) composite material comprising fiber preform and a resin; and (2) improving moldability of the composite material, comprising (a) manufacturing fiber preform by coating a carbon material including fiber and graphene oxide, CNT, carbon black and carbon nanofibers, and (b) impregnating the resin on the fiber preform, where the method do not mix the polymeric binder materials; and (3) composite material having improved moldability excluding polymeric binder material.