Polylactic acid composite material and its preparation method

The present invention provides a lactic acid polymer composite material and its preparation method, which belongs to the field of polymer technology composite materials, which can solve the existing low polylactic acid composites impact performance issues. The present invention, by adding the fibrous calcium carbonate, calcium carbonate and fibrous complex with various inorganic powders as a way to add a filler to the polylactic acid, obtained by extruding the blend impact properties and excellent flexural properties completely integrated biodegradable polylactic acid composite.