Post-treatment method of polymer powder for selective laser sintering

The invention discloses a post-treatment method of polymer powder for selective laser sintering, which comprises the following steps: step 1, adding 0.1-1.5 parts of nano-particles and 0.02-0.1 part of surfactant into 1 part of solution, and stirring to obtain nano-particle dispersion solution; step...

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Hauptverfasser:	WEN JIEBIN, WANG ZHEN, GUO FUQIANG, ZHU YANGJIE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADDITIVE MANUFACTURING TECHNOLOGY ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING MAKING GRANULES OR PREFORMS PERFORMING OPERATIONS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The invention discloses a post-treatment method of polymer powder for selective laser sintering, which comprises the following steps: step 1, adding 0.1-1.5 parts of nano-particles and 0.02-0.1 part of surfactant into 1 part of solution, and stirring to obtain nano-particle dispersion solution; step 2, uniformly paving 100 parts of polymer powder on a substrate; uniformly spraying the nano-particle dispersion solution on the surface of the polymer powder by using a spray head, and then carrying out microwave heating on the polymer powder; step 3, cooling the polymer powder to a temperature below the glass transition temperature after the treatment in the step 2; and step 4, performing sieving and air grading treatment on the polymer powder adhered with the nanoparticles obtained in the step 3 to obtain the polymer powder for selective laser sintering. The nanoparticles are adhered to the surface of the polymer powder, so that the performance of the polymer powder shows higher stability and consistency in a re