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首页> 外文期刊>Journal of Applied Polymer Science >Optimization of 3D printing parameters for high-performance biodegradable materials
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Optimization of 3D printing parameters for high-performance biodegradable materials

机译：优化高性能生物降解材料的3D打印参数

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摘要

Developing 3D printing high-performance biodegradable materials is important to protect the environment and deal with emergencies such as COVID-19. Fused deposition modeling (FDM), one of the 3D printing methods, has many advantages, such as low cost and wide range of materials. However, the weak interlayer adhesion is an important factor restricting the development of FDM. In addition to the influence of material properties, the optimization of 3D printing parameters is also an important means to give full play to the inherent properties of materials. The optimal 3D printing parameters are conducive to the diffusion and entanglement of molecular chains between adjacent layers. PLA/PBAT/PLA-g-GMA (70/30/10 wt%, PLA-g-GMA was a compatibilizer synthesized in our lab) was used as the research object. This work aims to analyze the mechanical properties response of biodegradable polymers products manufactured through FDM. Herein, the effect of 3D printing parameters including layer thickness, nozzle temperature, printing speed and platform temperature have been systematically investigated by orthogonal experimental design. The result showed that the excellent performance of 3D printing specimen was obtained when the layer thickness was 0.15 mm, the printing speed was 50 mm center dot s(-1), the nozzle temperature was 200 degrees C and the platform temperature was 50 degrees C. The SEM images showed that the optimal 3D printing products had the best interlayer adhesion and the lowest porosity. Undergoing optimization of 3D printing processing, the yield strength and elongation at break of specimen increased by 115% and 229%, respectively. In this paper, the interlayer adhesion and mechanical properties of 3D printing products can be significantly improved by simply optimizing the 3D printing parameters without complex material modification. This work provided a new method for improving the interlayer adhesion of FDM and the mechanical properties of FDM products.
机译：2019冠状病毒疾病的发展，如3D打印高性能可降解材料是保护环境和处理紧急事件的重要手段。熔融沉积模型（FDM）是一种三维打印方法，具有成本低、材料范围广等优点。然而，层间粘附性差是制约FDM发展的重要因素。除了材料性能的影响外，3D打印参数的优化也是充分发挥材料固有性能的重要手段。最佳的3D打印参数有利于相邻层之间分子链的扩散和缠结。以PLA/PBAT/PLA-g-GMA（70/30/10 wt%，PLA-g-GMA是我们实验室合成的相容剂）为研究对象。本工作旨在分析通过FDM制造的可生物降解聚合物产品的机械性能响应。本文通过正交试验设计，系统研究了3D打印层厚度、喷嘴温度、打印速度和平台温度等参数对3D打印效果的影响。结果表明，当层厚为0.15mm、打印速度为50mm中心点s（-1）、喷嘴温度为200℃、平台温度为50℃时，3D打印样品获得了优异的性能。SEM图像显示，最佳3D打印产品的层间附着力最好，孔隙率最低。通过优化3D打印工艺，试样的屈服强度和断裂伸长率分别提高了115%和229%。本文通过简单地优化3D打印参数，无需复杂的材料改性，即可显著提高3D打印产品的层间附着力和机械性能。本研究为提高FDM的层间附着力和FDM制品的力学性能提供了一种新的方法。

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