MATERIAL SYSTEM FOR 3D PRINTING

• Main Authors: MISPELKAMP, Dominik, WUNNICKE, Odo, MÜLLER, Andreas, EL AZZAWI, Alexander, BEHRENS, Ulrike, ROCCARO, Maximilian, HOLTHAUSEN, Michael, SCHRIEF, Thomas, POPPE, Dirk, PRIDÖHL, Markus
• Format: Patent
• Language: English; French
• Published: 29.12.2022
• Subjects: 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; CASTING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; POWDER METALLURGY; SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING CEMENT, CLAY, OR STONE; WORKING METALLIC POWDER; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The present disclosure provides a material system for three-dimensional printing, which includes (a) a powder composition comprising polymer particles and (b) a liquid binder comprising a material polymerizable by free radial polymerization and an oxygen scavenger, wherein the oxygen scavenger is a compound comprising at least one phosphor atom. Such material system enables to prepare articles by 3D printing which have good green body strength and form stability upon curing at elevated temperatures. The final cured three-dimensional articles have mechanical properties, which render them suitable for end use applications. La présente invention concerne un système de matériau pour impression en trois dimensions, qui comprend (a) une composition pulvérulente comprenant des particules de polymère et (b) un liant liquide comprenant un matériau polymérisable par polymérisation radicalaire et un capteur d'oxygène, le capteur d'oxygène étant un composé comprenant au moins un atome de phosphore. Un tel système de matériau permet de préparer des articles par impression 3D qui présentent une bonne résistance à cru et une stabilité de forme lors du durcissement à haute température. Les articles tridimensionnels durcis finaux présentent des propriétés mécaniques qui les rendent appropriés pour des applications d'utilisation finale.