热塑性聚氨中的结构-性质-性能关系:灌装密度和表面纹理的影响
Patricia Isabela Brăileanu1, Marius-Teodor Mocanu2,3, Tiberiu Gabriel Dobrescu1
1Department of Robotics and Manufacturing Systems, Faculty of Industrial Engineering and Robotics, National University of Science and Technology POLITEHNICA Bucharest, 060042 Bucharest, Romania.
Polymers
|October 16, 2025
概括
这项研究探讨了灌装密度如何影响热塑性聚氨 (TPU),如FILAFLEX FOAMY 70A和SMARTFIL® FLEX 98A. 不同的充填水平显著改变了摩擦和表面特性,指导了材料设计.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物工程 聚合物工程
- 添加剂制造 添加剂制造 添加剂制造
背景情况:
- 热塑性聚氨 (TPU) 是用于增材制造的多功能聚合物.
- 化纤维制造 (FFF) 允许复杂的几何形状和量身定制的材料特性.
- 了解结构-属性-性能 (SPP) 关系对于优化TPU应用程序至关重要.
研究的目的:
- 通过FFF制造的两个不同的TPU (FILAFLEX FOAMY 70A和SMARTFIL® FLEX 98A) 的SPP关系的调查.
- 分析TPUs的tribological和表面特征,其中具有不同的轮回填充密度和Archimedean表面纹理.
- 确定填充密度和表面特征如何影响这些TPU的性能和磨损行为.
主要方法:
- 使用FFF制造TPU光盘样本,具有受控的回旋灌装密度 (10-100%) 和阿基米德表面纹理.
- 使用圆盘球试验进行 Tribological 分析,以确定摩擦系数 (μ).
- 通过造型测量和光学显微镜进行表面表征,以评估粗度和形态.
主要成果:
- 由于增强的结构稳定性,SMARTFIL® FLEX 98A的μ显著减少,从1.174 (10%填充) 到0.371 (100%填充).
- FILAFLEX FOAMY 70A保持了稳定但更高的μ (0.585-0.729) 跨密度,归因于其泡结构和散装产量.
- SMARTFIL® FLEX 98A表现出更高的表面粗度,而FILAFLEX FOAMY 70A表现出一致的粗度;这两种TPU都表现出对钢质对应物的磨损耐用性.
结论:
- 对于这两种TPU,已经确定了明显的SPP关系,根据它们的tribological和表面特性,建议量身定制的应用.
- SMARTFIL® FLEX 98A适用于吸收能量,可变形的部件,而FILAFLEX FOAMY 70A则非常适合需要稳定的表面表面和低粘合剂磨损的应用.
- 该研究通过证明受控填充和表面特征调整的影响,推进了功能分级TPU材料的设计.
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