▎ 摘　　要

NOVELTY - High modulus thermoplastic epoxy resin composition comprises 25-40 pts. wt. polyurethane modified epoxy resin, 5-15 pts. wt. chain extender, 60-100 pts. wt. spherical filler, 25-45 pts. wt. cyclohexanone, 0.5-2 pts. wt. coupling agent, 0.1-0.25 pts. wt. nucleating agent, 1-3 pts. wt. wetting and dispersing agent. USE - The high modulus thermoplastic epoxy resin composition is useful for preparing a resin matrix which is useful in a composite material. ADVANTAGE - The high modulus thermoplastic epoxy resin composition has good mechanical strength, strong bonding force, and high toughness characteristics. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of the high modulus thermoplastic epoxy resin composition, comprisng comprising (i) adding polyurethane-modified epoxy resin and chain extender to the reactor, uniformly stirring, and insulting at 30-50°C for 0.5-1 hour to obtain a large molecular weight polyurethane-modified epoxy resin prepolymer, (ii) adding the dissolved large molecular weight polyurethane modified epoxy resin prepolymer, nucleating agent, and pre-dispersed filler into the compounding bottle, and dispersing for 1-2 hours to obtain an epoxy resin composition.