▎ 摘　　要

NOVELTY - Thermosetting composite material comprises a furan polymer forming a thermosetting matrix of the composite material and a a material immiscible with the thermoset matrix cissable. The thermosetting composite material further comprises a solvent, and in that the material immiscible with the thermosetting matrix is formed of particles chosen from micrometric particles, nanometric particles, or even a mixture of micrometric particles and nanometric particles, these particles being based on a compound comprising more than 40 wt.% of a carbon. USE - Thermosetting composite material used for three dimensional printing by extrusion. ADVANTAGE - The thermosetting composite material is cost-effective. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a three dimensional printing method of an object, which involves extruding hermosetting composite material comprising a furan polymer, the furan polymer forming a thermosetting matrix of the thermosetting composite material, a solvent, and a material immiscible with the thermosetting matrix, the material immiscible with the thermosetting matrix being formed of particles selected from particles micrometric, nanometric particles, or even a mixture of micrometric particles and nanometric particles, these particles being based on a compound comprising more than 40% by mass of carbon, the thermosetting composite material being extruded at a extrusion temperature greater than or equal to the ambient temperature and below the crosslinking temperature (T ret) furan polymer, and a heat treatment comprising an annealing of the extruded thermosetting composite material, at an annealing temperature greater than or equal to the crosslinking temperature (Tret) furan polymer, so as to induce at least partial crosslinking of the thermosetting matrix to form an object in a thermosetting composite material comprising a matrix at least partially reticulated.