▎ 摘　　要

NOVELTY - Nano-modified epoxy resin with high impact resistance and high elastic modulus for reinforced carbon fiber hot-melt prepreg comprises 20-30 pts. wt. liquid epoxy resin, 10-20 pts. wt. semi-solid epoxy resin, 50-60 pts. wt. solid epoxy resin, 0.1-0.5 pts. wt. graphene, 1-3 pts. wt. fumed silica, 0.2-0.5 pts. wt. nano toughening agent, 1-3 pts. wt. wetting and dispersing agent, 6-12 pts. wt. latent curing agent, 1-3 pts. wt. accelerator, and 1-5 pts. wt. coupling agent. The nano toughening agent comprises nano-scale titanium-based compounds. The particle size of the nano-scale titanium-based compound is less than 50 nm. The mass percentage of the nano-scale titanium-based compound is not more than 10%. USE - Used as nano-modified epoxy resin with high impact resistance and high elastic modulus for reinforced carbon fiber hot-melt prepreg. ADVANTAGE - The nano-modified epoxy resin has high mechanical properties and guaranteed quality. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the nano-modified epoxy resin, comprising (S1) mixing liquid epoxy resin, semi-solid epoxy resin and solid epoxy resin, and stirring at 150-160degrees Celsius and 200-500 revolutions per minute for 55-65 minutes to prepare a mixed epoxy resin, (S2) cooling the mixed epoxy resin to 95-105degrees Celsius, adding nano toughening agent, and wetting and dispersing agent, dispersing at 1450-1500 revolutions per minute for 5-7 minutes to obtain intermediate product A, (S3) adding graphene, fumed silica, and latent curing agent to intermediate product A, and dispersing at 95-105degrees Celsius and 1450-1500 revolutions per minute for 7-9 minutes to obtain intermediate product B, and (S4) cooling the intermediate product B to 75-85degrees Celsius, adding accelerator and coupling agent, and dispersing at 1450-1500 revolutions per minute for 5-7 minutes to obtain nano-modified epoxy resin for hot melt method.