相关实验视频
Updated: Jan 10, 2026

08:43
Fused Filament Fabrication FFF of Metal-Ceramic Components
Published on: January 11, 2019
17.9K
化纤维制造战略对聚胺特性的影响
Marta Beata Krawczyk1, Marcin Andrzej Królikowski1, Kamil Urbanowicz1
1Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology in Szczecin, 70-310 Szczecin, Poland.
Materials (Basel, Switzerland)
|November 27, 2025
概括
化纤维制造 (FFF) 参数显著影响聚胺 (PA) 零件性能. 最佳拉伸强度和年轻的强度
科学领域:
- 材料科学与工程 材料科学与工程
- 添加剂制造 添加剂制造 添加剂制造
- 聚合物科学 聚合物科学
背景情况:
- 聚胺 (PA,尼龙TM) 零件由于其强大的机械特性,在增材制造中至关重要.
- 优化化丝制造 (FFF) 参数对于实现所需的材料性能至关重要.
- 了解加工变量对PA机械性能的影响对于可靠的零件生产至关重要.
研究的目的:
- 为了研究化纤维制造 (FFF) 参数如何影响聚胺 (PA) 零件的机械性能.
- 为了确定最佳的灌装结构,密度和样品方向,以提高PA部件的性能.
- 为了确定适合特定应用的PA细丝,例如远程康复设备原型.
主要方法:
- 使用化丝制造 (FFF) 来生产具有不同灌装结构 (对角,蜂),灌装密度 (60%,80%,100%) 和方向 (0°,45°,90°) 的PA样本.
- 测试了来自五个不同制造商的纤维丝,将结果与注射成型参考样本进行比较.
- 进行了标准抗拉强度测试,以量化机械性能.
主要成果:
- 样品的方向显著影响了拉伸强度,而0°的方向产生了最高的值.
- 最高的扬斯模量是通过在0°方向的固体充填实现的.
- 与对角结构相比,蜂填充结构在较高密度下表现出更稳定和更优异的机械性能.
结论:
- FFF参数,特别是样品方向和灌装密度,对PA部件的机械性能进行了关键控制.
- 确定了符合严格抗拉强度要求的特定PA丝材,适用于苛刻的应用.
- 这些发现为优化增材制造中PA材料的FFF流程提供了宝贵的指导.
相关概念视频
Polymer Classification: Architecture
3.7K
Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
3.7K
Polymer Classification: Stereospecificity
3.1K
Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...
3.1K
Step-Growth Polymerization: Overview
4.3K
Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
Many natural and synthetic polymers are produced by...
Many natural and synthetic polymers are produced by...
4.3K
Polymer Classification: Crystallinity
3.7K
Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
3.7K

