▎ 摘　　要

NOVELTY - Particulate composition comprises: many powder particulates (1) comprising a thermoplastic polymer and many piezoelectric particles (4), where the piezoelectric particles are located (i) in the thermoplastic polymer at an outer surface (3) of the powder particulates, and/or (ii) within a core (2) of the powder particulates. USE - The composition is useful: in a printed object; for forming printed object (all claimed); and in containers (e.g. for food, beverages, cosmetics, personal care compositions, and medicine), shoe soles, toys, furniture parts, decorative home goods, plastic gears, screws, nuts, bolts, cable ties, medical items, prosthetics, orthopedic implants, production of artifacts that aid learning in education, three-dimensional anatomy models to aid in surgeries, robotics, biomedical devices (orthotics), home appliances, dentistry, automotive and airplane/aerospace parts, electronics, sporting goods, sensors (e.g. pressure sensors, strain sensors, valves and actuators, and energy harvesting devices. ADVANTAGE - The composition provides improved piezoelectric performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: a printed object comprising a polymer matrix formed by particulate consolidation and comprising a thermoplastic polymer, and many piezoelectric particles located in the polymer matrix; forming printed object using an additive manufacturing process (P1) comprising depositing in a powder bed the particulate composition comprising many powder particulates comprising a thermoplastic polymer and many piezoelectric particles, where the piezoelectric particles are located the (i)-(ii) and consolidating a portion of the powder particulates in the powder bed to form a printed object; forming (P2) powder particulates comprising providing a composite comprising a thermoplastic polymer and many piezoelectric particles distributed in the thermoplastic polymer, combining the composite in a carrier fluid at a heating temperature at or above a melting point or softening temperature of the thermoplastic polymer, where the thermoplastic polymer and the carrier fluid are substantially immiscible at the heating temperature, applying sufficient shear to disperse the thermoplastic polymer as liquefied droplets containing the piezoelectric particles at the heating temperature, cooling the carrier fluid to at least a temperature at which powder particulates in a solidified state form after liquefied droplets have formed, where the powder particulates comprises the thermoplastic polymer and at least a portion of the piezoelectric particles, the piezoelectric particles are located the (i)-(ii), and separating the powder particulates from the carrier fluid; and forming (P3) powder particulates comprising combining the thermoplastic polymer and the piezoelectric particles in a carrier fluid at a heating temperature at or above a melting point or softening temperature of the thermoplastic polymer, where the thermoplastic polymer and the carrier fluid are substantially immiscible at the heating temperature, applying sufficient shear to disperse the thermoplastic polymer as liquefied droplets containing the piezoelectric particles at the heating temperature, cooling the carrier fluid to at least a temperature at which powder particulates in a solidified state form after liquefied droplets have formed, where the powder particulates comprises the thermoplastic polymer and at least a portion of the piezoelectric particles, the piezoelectric particles are located the (i)-(ii) and separating the powder particulates from the carrier fluid. DESCRIPTION OF DRAWING(S) - The figure shows a cross-sectional view of a powder particulate. 1Powder particulate 2Core 3Outer surface 4Piezoelectric particles 5Nanoparticles