Abstract: A glass woven fabric prepreg of the epoxy matrix resin toughened with core-shell rubber particles was prepared. The results showed that the core-shell rubber will not affect the epoxy resin infiltration capacity of glass fiber and fabric prepreg laminate achieved excellent toughness by using just 5phr core-shell rubber as tougher, impact strength of which reached 278.1kJ/m² and it increased by 20.0% than that before toughening, fracture toughness G_IC of which reached 982.0J/m² and it increased by 35.4% than before toughening; tensile strength of which reached 749.5MPa and it increased by 16.5% than that before toughening, tensile modulus of laminate toughened with core-shell rubber particle is hardly decreased, the surface morphology observed by scanning electron microscope exhibited typical toughness fracture. The resin has good infiltration and adhesion with glass fiber.

Key words: core-shell rubber particle, prepreg, mechanical properties of compound material, mode interlaminar fracture toughness G_IC of laminates