Achieving high geometric fidelity in vat photopolymerization additive manufacturing through liquid surface support

Yuan, Jinsi; Cai, Peng; Sun, Jinxing; Hu, Bowen; Chen, Xiaoteng; Wang, Haijiang; Bai, Jiaming

2024-08-05

10.1016/j.addma.2024.104417

ADDITIVE MANUFACTURING   影响因子和分区

2214-8604

2214-7810

The top-down vat photopolymerization (VPP) printing process, known for its extensive material adaptability and elimination of the release step between the printed object and the separation film, is widely used in 3D printing of advanced functional materials. However, for slurries that cannot achieve rapid self-leveling, edge morphology distortion in printed objects reduces geometric precision. This study investigated the issue of edge morphology distortion in the top-down VPP printing process, and proposes a liquid surface support (LSS) printing method that can be applied to general VPP printers. The results show that the protective slurry fence printed simultaneously with the object can provide excellent liquid surface support for the uncured layer above the printed object, which shifts the edge morphology distortion issue from the target object to the fence. The gap distance between the fence and the target sample is identified as the primary factor affecting edge morphology fidelity, which is influenced by surface tension. Finally, we successfully validated the application of the LSS printing method in the printing of ceramic dental prostheses and slender rod structures. This novel method significantly enhances the geometric precision of printed samples and is expected to promote the advancement of VPP printing applications for advanced functional materials.

Additive manufacturing Vat photopolymerization Digital light processing Liquid surface support Geometric accuracy

SCI

英语

第一 ; 通讯

National Key R & D Program of China["2022YFE0197100","2023YFB4603502"] ; Shenzhen Science and Technology Innovation Commission[KQTD20190929172505711] ; China Postdoctoral Science Foundation[2023M731499]

Engineering ; Materials Science

Engineering, Manufacturing ; Materials Science, Multidisciplinary

WOS:001315540500001

ELSEVIER

Web of Science

Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China

Yuan, Jinsi,Cai, Peng,Sun, Jinxing,et al. Achieving high geometric fidelity in vat photopolymerization additive manufacturing through liquid surface support[J]. ADDITIVE MANUFACTURING,2024,93.

Yuan, Jinsi.,Cai, Peng.,Sun, Jinxing.,Hu, Bowen.,Chen, Xiaoteng.,...&Bai, Jiaming.(2024).Achieving high geometric fidelity in vat photopolymerization additive manufacturing through liquid surface support.ADDITIVE MANUFACTURING,93.

Yuan, Jinsi,et al."Achieving high geometric fidelity in vat photopolymerization additive manufacturing through liquid surface support".ADDITIVE MANUFACTURING 93(2024).