Influence of fillers on the mechanical properties and failure behavior of filled polymer materials

填料对填充聚合物材料力学性能和失效行为的影响

• 批准号: 522837572
• 负责人: Professor Dr.-Ing. Andreas Ricoeur
• 金额: --
• 依托单位: Fachgebiet Kunststofftechnik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/522837572?language=en
• 关键词: Influence; fillers; mechanical; properties; failure

The aim of the proposed research project is to characterize the influence of different particles on the failure mechanisms of filled plastics under different loading conditions. Regarding the particles, their size, shape and orientation in the composite material as well as the interface between particles and matrix are important factors, influencing the mechanical properties and failure behavior of these composite materials. This will be investigated employing the load types tension, bending and shear. The failure mechanisms will be investigated on the micro- and mesoscale, respectively. Important factors are the formation of cracks at the inclusions, both in the form of interfacial (adhesive) and matrix (cohesive) cracks and their propagation, both in the polymer matrix and in the inclusions. Finally, the results of the failure mechanisms on the mesoscale will allow the assessment of the failure mechanisms of components on the macroscale. In this context, both fracture mechanical and classical strength aspects are considered. In addition to a strong application focus, fundamental research in solid mechanics is required, in particular concerning the J-integral of cohesive zones as well as configurational forces and their interpretations with regard to crack formation and deflection at interfaces under mixed-mode loading conditions.

拟议的研究项目的目的是表征不同颗粒在不同载荷条件下填充塑料的破坏机制的影响。关于颗粒，它们在复合材料中的大小，形状和方向以及颗粒和基质之间的界面是重要因素，影响了这些复合材料的机械性能和故障行为。这将通过负载类型的张力，弯曲和剪切进行调查。将分别在微观和中尺度上研究故障机制。重要的因素是在界面（粘合剂）和基质（粘合剂）裂纹的形式及其在聚合物基质和夹杂物中形成裂纹的形成。最后，中尺度上的故障机制的结果将允许评估宏观上组件的破坏机制。在这种情况下，考虑了断裂机械和经典的力量方面。除了强大的应用重点外，还需要在固体力学方面进行基础研究，特别是关于凝聚区域的J积分以及配置力及其在混合模式负载条件下接口处的裂纹形成和偏转方面的解释。