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Alexandr S Lenshin¹, Vera E Frolova¹, Sergey V Kannykin¹

¹Department of Solid State Physics and Nanostructures, Voronezh State University, Voronezh 394018, Russia.

|May 11, 2024

概括

3D打印改变了聚乳酸 (PLA) 微观结构,并增强了它的水友性质. 沉积建模 (FDM) 过程影响了基于打印模式几何学的PLA结晶和表面湿度.

科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
增材制造增材制造增材制造

背景情况:

聚乳酸 (PLA) 是一种可生物降解的聚合物,广泛用于3D打印.
化沉积建模 (FDM) 过程涉及层次的材料沉积.
了解FDM对PLA性能的影响对于优化其应用至关重要.

研究的目的:

研究3D打印工艺对PLA的微结构和水性特性的影响.
分析不同的打印模式如何影响PLA的特性.
在3D打印的PLA中确定表面形态和湿度之间的关系.

主要方法:

使用黑色PLA丝材的FDM方法.
采用X射线相位分析来研究结晶.
进行红外光谱测试以评估化学键.
测量湿边角以评估水友性.
使用扫描电子显微镜 (SEM) 分析表面形态.

主要成果:

FDM加工诱导了PLA的部分结晶,根据图案几何和表面形态而有所不同.
红外光谱学证实了PLA中结构内化学键的保存.
印制的PLA样本表现出水友性质,湿角在50-60°之间.
表面形态和湿度受到印刷图案的几何形状的显著影响.

结论:

3D打印工艺,特别是FDM,修改了PLA的微观结构,并提高了其表面的水友性.
打印图案几何是影响3D打印PLA表面形态和湿度的关键因素.
在FDM打印过程中,PLA保留了其化学完整性,结晶是主要的微观结构变化.

关键词:

3D打印模型的图纸.红外光谱的光谱.X射线相位状态的X射线相位状态部分结晶的部分结晶.聚乙酸 (聚乳酸-PLA) 的使用.-多聚L-乳酸) 的稳定阶段.表面浸湿使表面湿透.

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