Preparation method of polylactic acid material for 3D (three-dimensional) printing

Abstract

The invention discloses a preparation method of a polylactic acid material for 3D (three-dimensional) printing. The polylactic acid material is toughened and modified by an inorganic nano material. The method comprises the steps as follows: firstly, surface organic modification is performed on a coupling agent for a nano inorganic toughening agent with an ultrasonic treatment technology, then the modified nano inorganic toughening agent, polylactic acid, a plasticizer and a dispersing agent are ground, dispersed and mixed, and finally, the toughened and modified polylactic acid material applicable to a 3D printing technology is prepared through an extruding granulation and drawing technology. According to the method, defects that existing polylactic acid materials for the 3D printing are poor in toughness and processability are overcome, and the method is simple to operate and capable of facilitating industrial production.