▎ 摘　　要

NOVELTY - Carbon fiber reinforced composite material is prepared by (a) introducing modified carbon fibers with nanoparticles on surface prepared by hydrothermal self-assembly method, where the mass ratio of carbon fibers and nanoparticles is controlled by adjusting ratio of glycol solvent and nanoparticles to 100:(0.1-3), (b) preparing modified resin substrate using high-pressure multi-stage emulsification pump, and realizing uniform and stable dispersion of nanoparticles in modified resin substrate, where the modified resin substrate comprises epoxy resin, amine curing agent, accelerator, and nanoparticles in a mass ratio of 100:(10-30):(0.4-2):(0.1-3), (c) using modified carbon fiber as enhancer, and (d) preparing modified resin substrate as substrate material, and preparing transverse fiber bundle tension (TFBT) composite material and fiber bundle pull-out (FBPO) composite material. USE - As carbon fiber reinforced composite material. ADVANTAGE - The composite material realizes the uniform distribution and controllable grafting of nanoparticles on carbon fiber by adjusting proportion of ethylene glycol solvent and nanoparticles, realizes strong shearing force of high-pressure multi-stage emulsion pump, has excellent mechanical properties, high interfacial bonding strength and excellent electrical conductivity, and solves the problems of weak interfacial bonding and poor interfacial electrical conductivity of carbon fiber reinforced composite material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the composite material, involving (a) using hydrothermal self-assembly method, adding nanoparticles to ethylene glycol, ultrasonically dispersing for 0.5-1 hours, transferring the uniformly mixed ethylene glycol-nanoparticle solution and carbon fiber to hydrothermal reaction kettle, performing reaction under pressure of 1-2 MPa, reacting in air-blast oven at 160-180 degrees C for 4-7 hours, and reacting in blast oven at 100-120 degrees C for 4-6 hours, (b) preparing modified resin substrate by adding nanoparticles to epoxy resin, performing low-high-low-pressure mixing dispersion by high-pressure multi-stage emulsification pump at 10-13 MPa/(10-15) minute+17-20 MPa/(20-30) minute+10-13 MPa/10-15 minute to obtain modified epoxy resin, (b) adding amine curing agent and accelerator to modified epoxy resin, and performing mechanical stirring and mixing in oil bath at 30-70 degrees C at a stirring speed of 600-1000 rpm for 30-60 minutes to obtain modified resin substrate, and (c) preparing TFBT modified carbon fiber by embedding modified carbon fiber to self-made silica gel mold, and preheating modified carbon fiber in blast oven at 70-100 degrees C for 20-40 minutes, and vacuum defoaming for 0.5-1 hour, curing at 80-100 degrees C for 1-2 hours, curing at 110-130 degrees C for 1-2 hours, curing at 140-160 degrees C for 2-3 hours, and cooling to room temperature, and preparing FBPO composite material by embedding one end of modified carbon fiber in modified resin substrate, where the embedding depth is 2-3 mm, and curing in same curing manner in same step (a).