由于材料挤出加工参数的变化,聚乳酸的表面外观
Roberto Spina1,2,3
1Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari, Bari, Italy. roberto.spina@poliba.it.
Scientific reports
|August 14, 2025
概括
这项研究揭示了材料挤出 (MEX) 过程参数如何影响聚乳酸 (PLA) 3D打印表面质量. 图像分析准确地预测了表面粗度和机械性能变化,这是由于参数变化造成的.
科学领域:
- 添加剂制造 添加剂制造 添加剂制造
- 材料科学 材料科学 材料科学
- 聚合物工程 聚合物工程
背景情况:
- 材料挤出 (MEX) 是一种广泛使用的3D打印工艺.
- 优化MEX过程参数对于实现所需的组件质量至关重要.
- 聚乳酸 (PLA) 是一种流行的可生物降解聚合物,用于3D打印应用.
研究的目的:
- 研究MEX工艺参数对PLA组件表面质量的影响.
- 建立过程变化,表面特征 (粗度,灰度) 和机械性能之间的相关性.
- 评估图像分析作为评估表面质量的方法的有效性.
主要方法:
- 使用材料挤出 (MEX) 来制造具有各种工艺参数 (流量,喷嘴温度,风扇速度) 的PLA元件.
- 使用简单的图像分析来量化表面灰度变化.
- 测量了表面粗度,并进行了单轴拉伸试验,以确定机械性能 (斯模量,拉伸强度,破裂时的应变).
主要成果:
- 在工艺参数和表面粗度/灰度变化之间发现了显著的相关性 (50-60%).
- 灰度图像分析结果显示与表面粗度测量结果有很强的匹配.
- 流速和风扇速度被确定为影响光密度,粘附和机械性能的关键参数.
结论:
- MEX过程参数对PLA表面质量和机械性能有很大影响.
- 图像分析提供了一种可行且准确的方法来评估MEX加工的PLA零件的表面质量.
- 优化流量和风扇速度等参数对于控制PLA组件特性至关重要.
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