Chemical Optimization Strategy of Rapid Additive Manufacturing via Up-Conversion Assisted Photopolymerization Based Direct Ink Writing,Advanced Materials Technologies

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Chemical Optimization Strategy of Rapid Additive Manufacturing via Up-Conversion Assisted Photopolymerization Based Direct Ink Writing
Advanced Materials Technologies ( IF 6.4 ) Pub Date : 2023-01-27 , DOI: 10.1002/admt.202201613
Junzhe Zhu _{1,

2} , Zhenpeng Guo _{1,

2} , Yufan Zhou ₁ , Xiucheng Zou _{1,

2} , Ye Zhu ₂ , Yu Liu _{3,

4} , Ren Liu _{1,

2}

Affiliation

Light-driven 3D printing can empower the liberty of creation and concretize the original creation in versatile conditions with plenty of choices in resolution or properties. However, photopolymerization-based 3D printing inks are facing a trade-off between requiring processing rate and satisfying performance, and a chemical optimization strategy is proposed to achieve the ink demands of rapid direct ink writing utilizing up-conversion assisted photopolymerization. Since acylphosphonate can generate two reactive radicals and tertiary amine can reinitiate polymerization in oxygen inhibition, the yielded active species in limited irradiation of 3D printing are maximized to accelerate the polymerization by theoretically and experimentally interpreting the roles of up-conversion particle, photoinitiators, and co-initiator played in printing. High print speed in depositing and in situ curing (3.56 × 10⁴ mm³ h⁻¹) are realized, and the manufacturing time is shortened by multi-resolution printing which is impressive compared to current 3D printing methods. The strategy is simultaneously compatible with rigid and elastomeric materials, and will surely contribute to other light-driven 3D printing technologies for extensive applications.

中文翻译：

基于上转换辅助光聚合的直接墨水书写快速增材制造的化学优化策略

光驱动 3D 打印可以赋予创作自由，并在多种条件下将原始创作具体化，并提供多种分辨率或属性选择。然而，基于光聚合的 3D 打印墨水面临着要求加工速率和满足性能之间的权衡，提出了一种化学优化策略，以利用上转换辅助光聚合实现快速直接墨水书写的墨水需求。由于酰基膦酸酯可以产生两个反应性自由基，叔胺可以在氧抑制中重新引发聚合，因此通过从理论上和实验上解释上转换粒子、光引发剂和助剂的作用，最大限度地提高 3D 打印在有限辐照下产生的活性物质以加速聚合。 - 发起者在印刷中发挥作用。⁴ mm ³ h ^-1 ) 得以实现，并且通过多分辨率打印缩短了制造时间，这与当前的 3D 打印方法相比令人印象深刻。该策略同时兼容刚性和弹性材料，必将有助于其他光驱动 3D 打印技术的广泛应用。

更新日期：2023-01-27

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