POLYAMIDE POWDER FOR SELECTIVE SINTERING METHODS

• Main Authors: GREBE MAIK, SYLVIA MONSHEIMER, KUETING BEATRICE, DIEKMANN WOLFGANG, BAUMANN FRANZ-ERICH DR
• Format: Patent
• Language: English; Japanese
• Published: 14.01.2021
• 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 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; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; 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; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

To provide a polyamide powder for selective absorbing sintering (SAS) or selective inhibition sintering (SIS).SOLUTION: The polyamide powder has a solution viscosity to ISO 307 of 1.8 to 2, and an increase in the solution viscosity of 0% to 25%, preferably 5% to 15%, when the powder is subjected to a temperature 20°C below its melting temperature under air for 20 h.SELECTED DRAWING: None 【課題】選択的吸収焼結（ＳＡＳ）または選択的抑制焼結（ＳＩＳ）用のポリアミド粉末。【解決手段】該ポリアミド粉末は、１．８〜２のISO 307による溶液粘度と、該粉末が該空気中で２０ｈ、その溶融温度を２０℃下回る温度に暴露される際に０％〜２５％、好ましくは５％〜１５％の溶液粘度の増加とを有する。【選択図】なし