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Mechanical Thermal and Rheological Properties of Polyethylene-Based Composites Filled with Micrometric Aluminum Powder

机译：微米级铝粉填充的聚乙烯基复合材料的机械热和流变性能

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Investigations related to polymer/metal composites are often limited to the analysis of the electrical and thermal conductivity of the materials. The presented study aims to analyze the impact of aluminum (Al) filler content (from 1 to 20 wt%) on the rarely investigated properties of composites based on the high-density polyethylene (HDPE) matrix. The crystalline structure, rheological (melt flow index and oscillatory rheometry), thermal (differential scanning calorimetry), as well as static (tensile tests, hardness, rebound resilience) and dynamic (dynamical mechanical analysis) mechanical properties of composites were investigated. The incorporation of 1 and 2 wt% of aluminum filler resulted in small enhancements of mechanical properties, while loadings of 5 and 10 wt% provided materials with a similar performance to neat HDPE. Such results were supported by the lack of disturbances in the rheological behavior of composites. The presented results indicate that a significant content of aluminum filler may be introduced into the HDPE matrix without additional pre-treatment and does not cause the deterioration of composites’ performance, which should be considered beneficial when engineering PE/metal composites.
机译：与聚合物/金属复合材料有关的研究通常仅限于材料的电导率和导热率的分析。提出的研究旨在分析铝（Al）填料含量（1至20 wt％）对基于高密度聚乙烯（HDPE）基复合材料很少研究的性能的影响。研究了复合材料的晶体结构，流变学（熔体流动指数和振荡流变学），热学（差示扫描量热法）以及静态（拉伸试验，硬度，回弹力）和动态（动态力学分析）机械性能。掺入1和2 wt％的铝填料会导致机械性能的小幅提高，而5和10 wt％的填充量则可提供与纯HDPE相似的性能。此类结果得到了复合材料流变行为缺乏干扰的支持。给出的结果表明，无需额外的预处理就可以将大量的铝填料引入HDPE基体中，并且不会导致复合材料性能的下降，这在设计PE /金属复合材料时应被认为是有益的。

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