Study of the synergistic effects of fiber orientation, fiber phase and resin phase in a fiber-reinforced composite material on its tribological properties
Study of the synergistic effects of fiber orientation, fiber phase and resin phase in a fiber-reinforced composite material on its tribological properties
复制标题
纤维增强复合材料中纤维取向、纤维相和树脂相协同效应对其摩擦学性能的研究
DOI：
10.1016/j.wear.2018.12.090
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发表时间：
2019-04-30
期刊：
影响因子：
5
通讯作者：
Bai, Xiuqin
中科院分区：
文献类型：
--
作者：
Liu, Shutian;Dong, Conglin;Bai, Xiuqin
制备了一种由酚醛树脂、尼龙织物和石墨烯组成的新型纤维增强复合材料（FRC），研究了纤维取向、纤维和树脂对FRC材料摩擦学性能的协同影响。使用R-tec商业摩擦测试仪进行实验性磨损测试，其中FRC材料试样对Si 3 N4陶瓷球进行磨损。测定并比较了试样的摩擦系数（COF）、磨损曲线和微观形貌。分析了试样的力学性能，以辨别它们的摩擦和磨损机制。实验结果表明，具有较高海岸硬度和较好热变形温度的纤维作为增强相在FRC材料中具有较好的耐磨性。由于树脂相的热变形温度低，在磨损过程中容易发生软化和变形，这导致其迁移到接触表面，在那里它充当润滑剂。垂直和平行纤维表面都表现出较低的摩擦系数和优异的耐磨性能。纤维节点和纤维节点表面处的树脂的大的不均匀磨损产生粗糙表面，导致显著磨损和高COF。本文的研究有助于理解FRC材料中各相的作用以及FRC的摩擦磨损机理，为今后设计低摩擦、高耐磨性能的FRC材料提供参考。
A new fiber-reinforced composite (FRC) material composed of phenolic resin, nylon fabric and graphene was fabricated and tested to investigate the synergistic effects of fiber orientation, fiber and resin on the tribological properties of FRC materials. The experimental wear tests, where the FRC material specimens were worn against Si3N4 ceramic balls, were conducted using R-tec commercial tribotester. The coefficients of friction (COF), wear profiles and micro-morphologies of the test specimens were determined and compared. The mechanical properties of the test specimens were analyzed to discern their friction and wear mechanisms. The experimental results showed that fiber with a high shore hardness and good a heat distortion temperature produced good wear resistance, as the reinforcing phase in the FRC material. The resin phase became soft and deformed easily during the wear process, because of its low heat distortion temperature, which caused it to migrate to the contact surfaces where it acted as a lubricant. Both the perpendicular and parallel fiber surfaces exhibited a low COF and excellent wear-resistance properties. The large non-uniform wear of the fiber nodes and the resin at the fiber node surface produced a rough surface resulting in substantial wear and a high COF. The understanding gained herein was helpful in comprehending the effects of the various phases in FRC materials as well as the FRC friction and wear mechanisms, and will be useful for future design of FRC materials with low friction, and high wear resistance properties.