▎ 摘　　要

NOVELTY - Selective laser sintering process involves: 1) depositing carbon nanomaterial-graft-polyurethane (CNM-g- polyurethane) particles optionally in combination with other thermoplastic polymer particles on a surface, where the CNM-g-polymer particles comprise a polyurethane grafted to a carbon nanomaterial; and 2) then exposing at least a portion of the CNM-g-polyurethane particles to a laser, for fusing the polymer particles and forming a consolidated body by selective laser sintering. USE - Selective laser sintering process is used for preparing highly spherical particles used in power tools, automotive parts, gears, and appliance parts, electronics, sporting goods, biomedical devices, paints, powder coatings, ink jet materials, electrophotographic toners, 3D printing and packaging applications. ADVANTAGE - The selective laser sintering enables direct manufacture of three-dimensional objects of high resolution and dimensional accuracy. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the method used for forming highly spherical CNM-g-polyurethane particles, which involves: iv) mixing a mixture comprising: (a) CNM-g-polyurethane, (b) a carrier fluid immiscible with the polyurethane of CNM-g-polyurethane, optionally (c) a thermoplastic polymer not grafted to a CNM, and optionally (d) an emulsion stabilizer, at temperature more than the melting point or softening temperature of polyurethane of grafted material, and the thermoplastic polymer, when included, and at a shear rate sufficiently high to disperse the CNM-g-polyurethane in the carrier fluid; v) cooling the mixture to below the melting point or softening temperature, to form CNM-g-polyurethane particles; and vi) separating the CNM-g-polyurethane particles from the carrier fluid.