https://scholars.lib.ntu.edu.tw/handle/123456789/598278
標題: | Rapid hardening process for starch-based powder bed 3D printing | 作者: | Cheng T.-Y Liao Y.-C. YING-CHIH LIAO |
關鍵字: | Binder-jetting 3D printing;Microwave;Post-treatment;Starch gelatinization;3D printers;Crosslinking;Gelation;Hardening;Microwave heating;Rigid structures;Starch;3-D printing;3D-printing;Binder-jetting 3d printing;Glutaraldehydes;High mechanical strength;Post treatment;Powder bed;Rapid hardening;Starch-based;Microwaves | 公開日期: | 2022 | 卷: | 75 | 起(迄)頁: | 259-267 | 來源出版物: | Journal of Manufacturing Processes | 摘要: | In this study, a microwave-assisted crosslinking process was developed to rapidly harden printed objects from binder jet 3D printers. A starch-based powder formula was first developed to pave smooth layers in the powder bed. An aqueous crosslinking agent (glutaraldehyde) was printed over the paved layers to form three-dimensional objects with a layer-by-layer strategy. After the 3D printing process, the printed three-dimensional samples were heated with a microwave oven and can be hardened within 70 s to trigger the endothermic crosslinking reaction between the starch powder and glutaraldehyde. The high mechanical strength of crosslinked starch after microwave heating provided 3D printed objects with a high flexural strength up to 32 MPa. Several examples were also demonstrated to show the versatility of this method in producing rigid structures with high mechanical strength for fast prototyping applications. ? 2022 The Society of Manufacturing Engineers |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85122658030&doi=10.1016%2fj.jmapro.2021.12.053&partnerID=40&md5=1acf3e5f5e41e395303c24ba2aff9bb6 https://scholars.lib.ntu.edu.tw/handle/123456789/598278 |
ISSN: | 15266125 | DOI: | 10.1016/j.jmapro.2021.12.053 |
顯示於: | 化學工程學系 |
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