▎ 摘　　要

NOVELTY - Polyetheretherketone composite powder comprises 60-90 pts. wt. polyetheretherketone powder, 5-20 pts. wt. carbon, 0.3-20 pts. wt. rare earths oxide and 0.1-2 pts. wt. antioxidant, 0-2-3 pts. wt. flow auxiliary agent and 0-3-3 pts. wt. flow auxiliary agent. USE - The polyetheretherketone composite powder is useful for laser selective sintering, electric insulating material, in aviation, medical appliance and industrial fields. ADVANTAGE - The composite powder has high tensile strength, tensile elongation and breaking impact strength, wide light absorption spectrum, high absorption rate, and high strength requirement of the product, make the preheating temperature of the polyetheretherketone quickly rise to the ideal value, realizes the laser sintering of the powder, and saves the cost and energy of the device. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: Preparing the composite powder, comprising (i) adding the polyether ether ketone powder, carbon, antioxidant and flow aid into the ball milling device for uniform stirring and ball milling to obtain a mixture, (ii) adding the amount of rare earth oxide, add the rare earth oxide into the mixture and uniformly stirring the ball mill, and (iii) stirring ball mill, sieving, and drying at 70-100℃; and Laser selective sintering with polyetheretherketone composite powder, comprising taking the polyether ether ketone composite powder, laser sintering, preheating during sintering is less than 210℃ with laser power of 40-60 W, scanning speed of 10-20 m/s, and sintering spacing of 0.05-0.5 mm