Reinforcing and toughening composite material with reticular microfiber structure and preparation method of reinforcing and toughening composite material

Abstract

The invention discloses a reticular microfiber structure reinforced and toughened composite material and a preparation method thereof, the reticular microfiber structure is constructed in a composite material sheet, and the formation of the microfiber structure can effectively solve the problem that the orientation difference of the extruded sheet in the extrusion direction and the direction perpendicular to the extrusion direction is large on one hand, and more importantly, the problem that the orientation difference of the extruded sheet in the extrusion direction and the direction perpendicular to the extrusion direction is large on the other hand can be effectively solved. The microfibers can induce crystallization of the matrix, and meanwhile, the tough net-shaped microfiber structure has good deformation capacity under the action of external force, so that the tensile strength and toughness of the extruded sheet in the extrusion direction and the direction perpendicular to the extrusion direction can be improved at the same time; in addition, the high-melting-point difficult-to-form-fiber phase can partially form a short rod-shaped structure in a polymer matrix, the polymer matrix can be enhanced, and the high-melting-point difficult-to-form-fiber phase has a wide application prospect.