The “Superlubricity State” of Carbonaceous Fillers on Polymer Composites,Macromolecular Chemistry and Physics

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The “Superlubricity State” of Carbonaceous Fillers on Polymer Composites
Macromolecular Chemistry and Physics ( IF 2.5 ) Pub Date : 2020-07-19 , DOI: 10.1002/macp.202000192
Eder H. C. Ferreira ₁ , Lucas P. Lima ₁ , Guilhermino J. M. Fechine ₁

Affiliation

In 2019 Ferreira et al. observed for the first time the influence of the superlubricity phenomenon of platelet‐like fillers on the properties of high molecular weight polyethylene (HMWPE) in the molten state. At the time, the study was carried out in the solid state of the polymer, analyzing the influence of the superlubricity phenomenon of oxide graphene and oxide graphite (GrO) agglomerates on the mechanical properties of the HMWPE. It was observed that the agglomerates, due to their superlubricity state, toughen the HMWPE polymer matrix. Here, mechanical tests (tensile), X‐ray microtomography, and scanning electron microscopy are carried out to elucidate this phenomenon. The same is observed for polystyrene containing very poorly dispersed GrO. The results presented here are a paradigm shift, as it has always been thought that the presence of agglomerates is harmful, but the opposite is proven here. In general, this paper can contribute a lot to the development of new composites and nanocomposites based on fillers that present the superlubricity phenomenon.

中文翻译：

聚合物复合材料中碳填料的“超润滑状态”

在2019年费雷拉等。首次观察到片状填料的超润滑现象对熔融态高分子量聚乙烯（HMWPE）性能的影响。当时，该研究是在聚合物的固态状态下进行的，分析了氧化物石墨烯和氧化物石墨（GrO）团聚体的超润滑现象对HMWPE力学性能的影响。观察到，由于它们的超润滑状态，附聚物使HMWPE聚合物基体增韧。在这里，进行了机械测试（拉伸），X射线显微断层照相术和扫描电子显微镜来阐明这种现象。对于含有非常差分散的GrO的聚苯乙烯，也观察到相同的情况。这里展示的结果是范式转变，一直以来，人们都认为附聚物的存在是有害的，但事实却相反。总的来说，本文可以为具有超润滑现象的基于填料的新型复合材料和纳米复合材料的开发做出很大贡献。

更新日期：2020-07-19

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