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制造工艺对材料挤出元件导电性的影响:基于线材和颗粒的工艺之间的比较
Maximilian Nowka1, Karl Hilbig1, Lukas Schulze1
1Institute for Engineering Design, Technische Universität Braunschweig, Hermann-Blenk-Str. 42, 38108 Brausnchweig, Germany.
Polymers
|April 27, 2024
概括
挤出温度显著影响3D打印导电性PLA结构的电电阻. 更大的喷嘴直径也减少了电阻差异,使成本效益高的材料挤出 (MEX) 工艺选择成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 添加剂制造 添加剂制造 添加剂制造
- 电气工程 电气工程
背景情况:
- 增材制造 (AM) 允许将功能组件 (如导电元件) 集成到单个部件中.
- 材料挤出 (MEX) 是一种多功能AM工艺,用于创建复杂的几何形状,使用各种材料.
研究的目的:
- 研究MEX工艺参数对导电性PLA样本电阻的影响.
- 为了确定影响增材制造的导电结构中电阻的重要因素.
主要方法:
- 使用碳纳米管和碳黑填充导电性PLA的丝和颗粒制造了样本.
- 一个全因数设计,可以改变挤出温度,沉积速度和生产过程.
- 用四线方法测量电阻力.
主要成果:
- 挤出温度是影响电阻的唯一重要的过程变量.
- 一个更大的喷嘴直径显著减少了一个数量级的电阻变异.
- 在大多数参数集中,阻力通常在更大的喷嘴直径下较低.
结论:
- 挤出温度是控制MEX导电部件电阻的关键参数.
- 喷嘴直径在减少变性和实现较低电阻方面发挥着至关重要的作用.
- MEX制造过程本身不会显著影响电阻,因此可以根据成本或其他因素进行选择.
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