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纳米复合材料具有优化聚四乙烯含量作为PA12和PLA中的增强剂,用于材料挤出增材制造

Nectarios Vidakis¹, Markos Petousis¹, Amalia Moutsopoulou¹

¹Department of Mechanical Engineering, Hellenic Mediterranean University, 71410 Heraklion, Greece.

|July 14, 2023

概括

聚四乙烯 (PTFE) 在3D打印中增强了聚乳酸 (PLA) 和聚胺12 (PA12). 这种材料挤出增材制造研究表明,这些纳米复合材料的机械性能得到了改善.

科学领域:

材料科学与工程材料科学与工程
增材制造增材制造增材制造
聚合物纳米复合材料聚合物纳米复合材料

背景情况:

聚四乙烯 (PTFE) 正在作为强化填充剂进行探索.
聚乳酸 (PLA) 和聚胺12 (PA12) 用作聚合物矩阵.
材料挤出 (MEX) 增材制造 (AM) 是目标工艺.

研究的目的:

为MEX AM评估PTFE作为PLA和PA12中的增强剂.
开发具有改进机械性能的纳米复合材料.
为了确定最佳的PTFE负载度.

主要方法:

将PTFE以不同重量百分比 (高达4.0重量%) 纳入PLA和PA12.
使用MEX AM. 准备细丝和3D打印样品.
包括机械测试,AFM,TGA,拉曼光谱,EDS和SEM在内的全面表征.

主要成果:

观察到PLA/PTFE的最佳机械性能增强量为2.0重量%,PA12/PTFE的最佳机械性能增强量为3.0重量%.
拉伸强度 (高达34.1%) 和弹性模量 (高达41.7%) 显著增加.
在屈曲强度 (高达57.6%) 和弹性模量 (高达25.5%) 中取得了显著的改进.

结论:

在MEX AM应用中,PTFE有效地增强了PLA和PA12聚合物.
开发的PTFE增强纳米复合材料表现出卓越的机械性能.
这项研究扩大了3D打印PLA和PA12组件的潜在应用.

关键词:

增材制造技术 (AM) 是一种增材制造技术.材料挤出 (MEX) 材料挤出纳米复合材料的使用方法聚胺12 (PA12) 是一种聚乳酸 (PLA) 是一种聚乳酸.聚四乙烯 (PTFE) 是一种聚四乙烯.热力学特性表征的方法

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