▎ 摘　　要

NOVELTY - Polylactic acid three-dimensional printing material comprises: 30-90 pts. wt. polylactic acid; 10-30 pts. wt. nitrogen-doped graphene; 0.5-3 pts. wt. antioxidant; 3-7 pts. wt. dispersing agent; and 0.1-1 pts. wt. nucleating agent, where the molecular weight of the polylactic acid is 40000-100000. USE - The thermally conductive polylactic acid three-dimensional printing material useful in the field of electronic and electrical, industrial models or circuit boards. ADVANTAGE - The polylactic acid 3D printing material has low density, thermal conductivity and electrical conductivity, and can meet the market demand for high heat conduction, conductive, low specific gravity FDM special consumables. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the thermally conductive polylactic acid three-dimensional printing material comprising drying and mixing the raw materials and adding to a single screw extruder for extrusion granulation.