A SUPPORT MATERIAL FOR 3D ADDITIVE MANUFACTURING

• Main Authors: VARADARAJ, Ramesh, MARAIST, Claire
• Format: Patent
• Language: English; French
• Published: 13.04.2023
• 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; CHEMISTRY; COMPOSITIONS BASED THEREON; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A sacrificial support material for use in additive manufacturing comprising greater than about 20 weight percent up to about 80 weight percent of a C20 to C50 fatty alcohol or mixture of fatty alcohols, and about 20 weight percent to about 80 weight percent of a C18 to C40 fatty alcohol alkoxylate or mixture of alcohol alkoxylates, having a transition temperature measured as the temperature immediately before phase change, based on viscosity measurement, preferably less than about 85°C. Un matériau de support sacrificiel destiné à être utilisé dans la fabrication additive comprend plus d'environ 20 % en poids jusqu'à environ 80 % en poids d'un alcool gras C20 à C50 ou d'un mélange d'alcools gras, et environ 20 % en poids à environ 80 % en poids d'un alcoxylate d'alcool gras C18 à C40 ou d'un mélange d'alcoxylates d'alcool, ayant une température de transition mesurée en tant que température précédant immédiatement avant le changement de phase, sur la base d'une mesure de viscosité, de préférence inférieure à environ 85 °C.