The effect of introducing nonwoven material based on polyamide PA 12-E on the mechanical properties of polymer composite materials based on the epoxy autoclave prepreg T107 was investigated. The presence of the nonwoven material slightly lowers the glass transition temperature to 171 ℃, which does not affect the feasibility of using the material up to the maximum operating temperature of 120 ℃. Electron microscopy studies of the composite's cross-sections revealed uniform distribution of the thermoplastic phase between the layers of carbon fabric as well as high adhesion of polyamide to the epoxy matrix. It was demonstrated that introducing nonwoven material does not lead to a reduction in the mechanical properties of the composites. The main advantage of composites based on nonwoven material is their enhanced resistance to impact loads. Under a free impact with energy of 6.67 J per 1 mm of the specimen, a through penetration with fiber destruction was observed in the sample without the nonwoven material, while for the sample with nonwoven material, the damage was characterized by delamination without fiber damage. The compressive strength after impact increased from 257 to 326 MPa with the introduction of nonwoven material. As a result, the proposed modification of commercial prepreg could expand the range of applications for the material and improve safety, particularly in aircraft structures.