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Additives for Ambient 3D Printing with Visible Light
Advanced Materials ( IF 27.4 ) Pub Date : 2021-09-14 , DOI: 10.1002/adma.202104906 Dowon Ahn 1 , Lynn M Stevens 1 , Kevin Zhou 1 , Zachariah A Page 1
Advanced Materials ( IF 27.4 ) Pub Date : 2021-09-14 , DOI: 10.1002/adma.202104906 Dowon Ahn 1 , Lynn M Stevens 1 , Kevin Zhou 1 , Zachariah A Page 1
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With 3D printing, the desire is to be “limited only by imagination,” and although remarkable advancements have been made in recent years, the scope of printable materials remains narrow compared to other forms of manufacturing. Light-driven polymerization methods for 3D printing are particularly attractive due to unparalleled speed and resolution, yet the reliance on high-energy UV/violet light in contemporary processes limits the number of compatible materials due to pervasive absorption, scattering, and degradation at these short wavelengths. Such issues can be addressed with visible-light photopolymerizations. However, these lower-energy methods often suffer from slow reaction times and sensitivity to oxygen, precluding their utility in 3D printing processes that require rapid hardening (curing) to maximize build speed and resolution. Herein, multifunctional thiols are identified as simple additives to enable rapid high-resolution visible-light 3D printing under ambient (atmospheric O2) conditions that rival modern UV/violet-based technology. The present process is universal, providing access to commercially relevant acrylic resins with a range of disparate mechanical responses from strong and stiff to soft and extensible. Pushing forward, the insight presented within this study will inform the development of next-generation 3D-printing materials, such as multicomponent hydrogels and composites.
中文翻译：
用于可见光环境 3D 打印的添加剂
对于 3D 打印，人们希望“仅限于想象”，尽管近年来取得了显着进步，但与其他制造形式相比，可打印材料的范围仍然很窄。由于无与伦比的速度和分辨率，用于 3D 打印的光驱动聚合方法特别有吸引力，但在当代工艺中对高能紫外/紫光的依赖限制了兼容材料的数量，因为在这些短时间内普遍吸收、散射和降解波长。这些问题可以通过可见光光聚合来解决。然而，这些低能量方法通常反应速度慢且对氧气敏感，妨碍了它们在需要快速硬化（固化）以最大化构建速度和分辨率的 3D 打印过程中的应用。在此处，2 ) 可与现代紫外线/紫光技术相媲美的条件。目前的工艺是通用的，提供了获得商业相关丙烯酸树脂的途径，这些丙烯酸树脂具有从强硬到柔软和可延展的一系列不同的机械响应。展望未来，这项研究中提出的见解将为下一代 3D 打印材料的开发提供信息，例如多组分水凝胶和复合材料。
更新日期：2021-11-01
中文翻译：
用于可见光环境 3D 打印的添加剂
对于 3D 打印，人们希望“仅限于想象”，尽管近年来取得了显着进步，但与其他制造形式相比，可打印材料的范围仍然很窄。由于无与伦比的速度和分辨率，用于 3D 打印的光驱动聚合方法特别有吸引力，但在当代工艺中对高能紫外/紫光的依赖限制了兼容材料的数量，因为在这些短时间内普遍吸收、散射和降解波长。这些问题可以通过可见光光聚合来解决。然而，这些低能量方法通常反应速度慢且对氧气敏感，妨碍了它们在需要快速硬化（固化）以最大化构建速度和分辨率的 3D 打印过程中的应用。在此处，2 ) 可与现代紫外线/紫光技术相媲美的条件。目前的工艺是通用的，提供了获得商业相关丙烯酸树脂的途径，这些丙烯酸树脂具有从强硬到柔软和可延展的一系列不同的机械响应。展望未来，这项研究中提出的见解将为下一代 3D 打印材料的开发提供信息，例如多组分水凝胶和复合材料。
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