Thermoplastic polymer powders for 3D printing

• Main Author: DURAND JEAN-CLAUDE
• Format: Patent
• Language: Chinese; English
• Published: 02.08.2024
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; MAKING GRANULES OR PREFORMS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; 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; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

The invention relates to a polymer powder for producing articles by 3D printing, in particular by sintering, comprising a thermoplastic polymer, an antioxidant, and a particular metal oxide, metal hydroxide and/or hydrotalcite, the sintered part has improved consistency in thermal stability, recyclability, and mechanical properties of the sintered part. The invention also relates to a process for preparing this powder and to the use thereof in a manufacturing process by sintering, and to articles manufactured from said powder. 本发明涉及一种用于通过3D打印，尤其是通过烧结来生产制品的聚合物粉末，所述聚合物粉末包含热塑性聚合物、抗氧化剂，以及特别的金属氧化物、金属氢氧化物和/或水滑石，具有热稳定性、可再循环性以及烧结部件的机械性质的改善的一致性。本发明还涉及一种用于制备该粉末的工艺以及其在通过烧结进行的制造工艺中的用途，以及由所述粉末制造的制品。