▎ 摘　　要

NOVELTY - An electrically conductive sized fiber comprises a fiber, and a sizing composition adhered to a surface of the fiber. The sizing composition comprises sizing compound(s) and graphene oxide nanoparticles. USE - The electrically conductive sized fiber is used for fiber-reinforced resin composite in the form of a pultruded sheet, resin-infused fabric, preimpregnated tape, or sheet molding compound useful for an article or spar cap (all claimed). ADVANTAGE - The electrically conductive sized fiber provides fiber-reinforced resin composite, which has improved through-thickness transverse electrical conductivity. It enhances the electrical conductivity of the composite more efficiently and cost-effectively. Since sizing is a standard process performed on fibers now, the inclusion of the electrically conductive graphene oxide nanopartides to the sizing bath provides a simple effective, low cost introduction process, and further achieves minimal waste. Graphene oxide-sized fibers can be incorporated into any existing composite material manufacturing process without altering the process parameters. The inclusion of electrically conductive graphene oxide nanopartides sizing increases electrical and thermal conductivity and provides greater resin-dominated mechanical properties like interlaminar shear and transverse strength. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) a method comprising coating a sized or an un-sized fiber tow with the sizing composition by drawing the sized or un-sized fiber tow through a sizing bath containing the sizing composition such that the un-sized fiber tow is immersed in the sizing composition, where the sizing composition contained in the sizing bath comprises sizing compound(s) and graphene oxide nanopartides; drying the coated fiber tow to form an electrically conductive sized fiber including the fiber and the sizing composition adhered to a surface of the fiber, where the sizing composition includes the sizing compound and graphene oxide nanopartides; and spooling the electrically conductive sized fiber; (2) fiber-reinforced resin composite comprising an electrically conductive sized fiber reinforcement including a fiber, and a sizing composition adhered to a surface of the fiber; and binder resin; and (3) an article comprising greater than or equal to 2 components adhesively bonded to each other, where at least one of the greater than or equal to 2 components comprises the fiber- reinforced resin composite.