Adjustable tribological properties in metal / plastic sliding pairs by combining hybrid plastic-based materials on different length scales

通过组合不同长度尺度的混合塑料材料，可调节金属/塑料滑动副的摩擦学特性

• 批准号: 428934631
• 负责人: Professor Dr.-Ing. Alois K. Schlarb
• 金额: --
• 依托单位: Lehrstuhl für Verbundwerkstoffe (CCE)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/428934631?language=en
• 关键词: Adjustable; tribological; properties; metal; plastic

Polymer materials and polymer-based composites have been used in tribological systems for decades. However, the fact that tribological properties are dependent on the load remains a key limitation for the use of such materials. A materials that performs well at low load conditions may perform poorly at higher loads and vice versa. Since the loads the occur during the use of technical systems typically vary over time, it is challenging to ensure reliability under all expected operating conditions. The aim of this study is to combine different tribologically modified materials into layered composites. By combining materials with different optimal operating points, the resulting composites should exhibit good tribological properties at several distinct operating points or across a wide range of operating conditions. Substrate layers with strongly different elastic moduli can provide additional degrees of freedom in the design of layered composites because they allow for an adjustment of the contact pressures of the individual components. By combining tribological experiments and numerical simulations, a thorough understanding of the mechanisms that determine the properties of multilayer composites can be obtained.

聚合物材料和聚合物基复合材料已经在摩擦学系统中使用了几十年。然而，摩擦学性能取决于载荷的事实仍然是使用这种材料的关键限制。在低负荷条件下表现良好的材料在较高负荷下可能表现不佳，反之亦然。由于技术系统使用期间发生的负载通常随时间变化，因此确保所有预期操作条件下的可靠性具有挑战性。本研究的目的是将联合收割机不同的摩擦改性材料组合成层状复合材料。通过组合具有不同最佳操作点的材料，所得复合材料应在几个不同的操作点或在广泛的操作条件下表现出良好的摩擦学性能。具有强烈不同弹性模量的基底层可以在层状复合材料的设计中提供额外的自由度，因为它们允许调节各个部件的接触压力。通过摩擦学实验和数值模拟相结合，可以获得决定多层复合材料性能的机理的透彻理解。