▎ 摘　　要

NOVELTY - Preparing nano-reinforced carbon fiber composite material with multiple sandwich structure comprises (1) uniformly mixing nanomaterials, dispersing working medium into semi-fluid state, and dispersing into gas-phase nano-dispersed mist through pulsed arc, (2) relatively moving the carbon fiber with the generation point to obtain modified carbon fibers with attached nanomaterials, (3) placing the modified carbon fiber in an oven for baking and heating, (4) placing the modified carbon fiber in a roller press, and adding epoxy resin while rolling to obtain modified carbon fiber in the middle, (5) placing the untreated carbon fiber in the middle, placing the sandwich structure carbon fiber composite material on the upper and lower sides of untreated carbon fiber, forming carbon fiber with multiple interlayer structures in which the upper and lower layers are small interlayers and large interlayer, and (6) adding epoxy resin into carbon fiber, heating and curing to obtain product. USE - The method is useful for preparing nano-reinforced carbon fiber composite material with multiple sandwich structure, which is useful in aerospace, national defense military industry, energy traffic, sports, travel, medical and other livelihood fields. ADVANTAGE - The method prepares nano-reinforced carbon fiber composite material with better coupling effect, and satisfies performance strengthening requirement of the composite material. DETAILED DESCRIPTION - Preparing nano-reinforced carbon fiber composite material with multiple sandwich structure comprises (1) uniformly mixing nanomaterials, dispersing working medium into semi-fluid state, and dispersing into gas-phase nano-dispersed mist through pulsed arc, (2) the carbon fiber is close to the gas phase nano-dispersion mist generation point, relatively moving the carbon fiber with the generation point to obtain modified carbon fibers with attached nanomaterials, where the vertical projection of the gas-phase nano-dispersed fog completely covers the carbon fibers, (3) placing the modified carbon fiber in an oven for baking and heating, (4) placing the modified carbon fiber in a roller press, and adding epoxy resin while rolling to obtain modified carbon fiber in the middle, where the sandwich structure carbon fiber composite materials with epoxy resin on the upper and lower sides, (5) placing the untreated carbon fiber in the middle, placing the sandwich structure carbon fiber composite material on the upper and lower sides of the untreated carbon fiber, forming the carbon fiber with multiple interlayer structures in which the upper and lower layers are small interlayers and large interlayer, and (6) adding epoxy resin into the carbon fiber with multiple sandwich structure, heating and curing to obtain product.