原料纤维和打印样品的机械性能:纤维增强和工艺参数的影响
Daniel Vieweger1, Sergej Diel1, Hans-Georg Schweiger1
1CARISSMA Institute of Electric, Connected, and Secure Mobility (C-ECOS), Technische Hochschule Ingolstadt, 85049 Ingolstadt, Germany.
Polymers
|June 19, 2024
概括
这项关于融合沉积建模 (FDM) 的研究发现,玻璃纤维增强尼龙显著改善了机械性能. 过程参数,如层厚度和灌装密度,也极大地影响了FDM部件的性能.
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
- 机械工程 机械工程
背景情况:
- 沉积建模 (FDM) 是一种广泛用于原型和功能部件的增材制造技术.
- 了解材料和工艺变量对于优化FDM组件机械性能至关重要.
研究的目的:
- 研究材料组成和工艺参数对FDM打印组件机械性能的影响.
- 确定最佳的材料选择和加工条件,以提高零件性能.
主要方法:
- 对七种材料进行了拉伸性测试,包括纤维增强选项 (木材-PLA,玻璃-尼龙).
- 研究的关键工艺参数包括层厚度,喷嘴直径,构造方向,喷嘴温度,灌装密度/模式和线角.
- 具有优越性质的材料被选择用于详细的过程参数分析.
主要成果:
- 木纤维增强的PLA由于粘合问题和多孔性而表现出不良的机械行为.
- ABS/PC混合物提供了强度的改善,而玻璃纤维增强尼龙显示出显著的强度和强度的增加.
- 较小的层厚增加了强度;更大的喷嘴直径和更低的喷嘴温度提高了刚性.
- 在边缘构建方向增加了刚度,但减少了故障应力;对齐的充填模式和更高的密度产生了最佳结果.
- 单向拉斯特角在强度和刚度方面表现优于交替角.
结论:
- 材料选择,特别是像玻璃尼龙这样的纤维增强,对于提高FDM部件的机械性能至关重要.
- 过程参数,包括层厚,灌装策略和角,显著影响机械性能.
- 优化这些因素对于生产用于承载应用的高性能FDM元件至关重要.
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