The present invention discloses a preparation method of a self-reinforced polylactic acid (PLA) composite material with high tensile toughness. The preparation method comprises the following steps: Step 1: preparing an electrostatically spun PLA nanofiber membrane from a first polylactic acid by electrostatic spinning technology as a reinforcing phase; Step 2: preparing a PLA cast film from a second polylactic acid by a twin-screw extruder and a micro-casting system as a matrix; Step 3: stacking several layers of the reinforcing phase prepared in Step 1 and several layers of the matrix prepared in Step 2 layer by layer, and performing hot-press molding to obtain the self-reinforced polylactic acid composite material. The present invention belongs to the technical field of polymer composite materials, and can improve the tensile toughness of the self-reinforced polylactic acid composite material with a low addition amount of the reinforcing phase.
Country Code: CN
Application Number: CN202410313309.X
