WATER-BASED BINDERS AND METHODS OF USE FOR ADDITIVE MANUFACTURE OF PARTS

• Main Authors: WILLIAM C ALBERTS, VADIM BROMBERG, ARUNKUMAR NATARAJAN, CHAN KWOK PONG
• Format: Patent
• Language: English; Japanese
• Published: 04.01.2022
• 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; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING METALLIC POWDER; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

To provide: additive manufacturing methods employing binder solutions that enable decreased cure time and increased throughput; and the binder solutions.SOLUTION: A manufacturing method comprises: depositing a layer of powder 202 on a working surface 204; selectively depositing a water-based binder solution 206 comprising 0.1 wt.% to 5 wt.% of a non-aqueous solvent having a boiling point higher than 100°C and lower than or equal to 175°C at 1 atm, where a thermoplastic binder 216 contains a first polymer strand 220 having a first functional group and a second polymer strand 222 having a second functional group; and non-covalently coupling the first polymer strand 220 and the second polymer strand 222 together via interaction between the first and second functional groups to form a green body part.SELECTED DRAWING: Figure 2 【課題】硬化時間の減少及びスループットの増加を可能にするバインダ溶液を用いた付加製造方法、およびバインダ溶液を提供する。【解決手段】作業面２０４上に粉末２０２の層を堆積させるステップと、１気圧において沸点が１００℃を超え１７５℃以下である０．１重量％から５重量％の非水性溶媒を含む水系バインダ溶液２０６を選択的に堆積させるステップであって熱可塑性バインダ２１６が、第１の官能基を有する第１のポリマーストランド２２０と第２の官能基を有する第２のポリマーストランド２２２とを含有するステップと、前記第１のポリマー鎖２２０と第２のポリマー鎖２２２とを、第１及び第２の官能基の間の相互作用を介して互いに非共有結合させてグリーン体部品を形成するステップと、を有する、製造方法である。【選択図】図２