High-precision 3D printing by deploying expandable microspheres

文献类型： 外文期刊

第一作者： Xu, Yang

作者： Xu, Yang;Zhang, Pei;Wang, Jinqing;Lou, Qin;Xu, Yang;Wang, Fucheng;Ni, Zhipeng;Liang, Xiangyu;Liu, Ji;Lu, Chengbang;Liang, Xiangyu;Lu, Chengbang;Liang, Xiangyu;Lu, Chengbang;Liang, Xiangyu;Liu, Weixuan;Xu, Yang;Guo, Yueying;Lou, Qin;Xu, Yang;Wang, Fucheng;Lu, Baoyang;Liu, Ji

作者机构：

期刊名称：CELL REPORTS PHYSICAL SCIENCE （ 影响因子：7.9； 五年影响因子：8.4 ）

ISSN：

年卷期： 2024 年 5 卷 8 期

页码：

收录情况： SCI

摘要： Stereolithography-based three-dimensional (3D) printing technology is widely employed in various industries, including manufacturing, healthcare, energy, biomedical, art, and other fields. However, precision issues, such as dimensional shrinkage and structural warping, significantly hinder its wide application. In this study, we present a straightforward and efficient yet general strategy to enhance structural fidelity by incorporating thermally expandable microspheres into photosensitive resins. We found that this reduction substantially mitigates the volume shrinkage below 3.98% compared to over 10% for commercial photosensitive resins. Precision improves significantly, with dimensional deviation at just 0.035% compared to over 0.1% with commercial options. Furthermore, due to the low filling ratio, the improvement in 3D printing precision did not affect the mechanical properties; thus, it does not affect applications where those photosensitive resins are originally targeted. Our method represents an effective strategy to improve the 3D printing resolution of photosensitive resins, thus opening directions for high-precision 3D printing technology.

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