双钥匙孔中断裂负荷PLA-Cu2O通过压缩成型和3D打印制造的纳米复合材料:一个实验和数值研究
Javad Khodadad Hatkeposhti1, Naser Kordani1, Mohammad Akbarzadeh Pasha2
1Department of Mechanical Engineering, University of Mazandaran, Babolsar, Iran.
Journal of the mechanical behavior of biomedical materials
|March 19, 2024
概括
这项研究分析了聚乳酸 (PLA) 与氧化铜 (Cu2O) 纳米颗粒,发现3D打印的PLA-Cu2O在0°光角度显示出更好的机械性能. 压缩成型的样本比3D打印的样本具有更高的断裂负荷.
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
- 纳米技术纳米技术
背景情况:
- 聚乳酸 (PLA) 是一种生物相容的聚合物,在假肢和电子产品中具有潜在的应用.
- 纳入氧化铜 (Cu2O) 纳米颗粒旨在增强PLA的抗菌,电和热性能.
- 目前对PLA-Cu2O纳米复合材料的研究主要集中在机械性能上.
研究的目的:
- 分析具有双钥匙孔口配置的PLA-Cu2O (97-3重量%) 纳米复合材料.
- 为了比较压缩成型和3D打印的PLA-Cu2O标本的机械性能.
- 为了研究形角度,隙半径和隙倾斜角度对机械性能的影响.
主要方法:
- 使用扫描电子显微镜 (SEM),X射线衍射 (XRD),能量散射X射线光谱 (EDX),X射线映射 (X-map) 和热重力测量分析 (TGA) 的表征.
- 通过压缩成型和3D打印制造样品.
- 实验测试和数值分析双钥匙孔孔配置.
主要成果:
- 3D打印的PLA-Cu2O在0°拉斯特角下表现出卓越的机械性能,在45°和90°时性能下降.
- 增加口半径或倾斜角度导致最大断裂负载的下降.
- 压缩成型的纳米复合材料显示出比3D打印的对应材料更高的临界断裂负载.
结论:
- 该研究提供了对PLA-Cu2O纳米复合材料的全面分析,突出了制造方法和几何参数对机械行为的影响.
- 研究结果表明,通过控制加工和设计,可以为特定应用优化PLA-Cu2O.
- 实验和数值结果都表明,在某些配置中,传统的制造方法可能会产生更高的机械强度.
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