| 基于正交设计的纳米蛇纹石-纳米氧化镧/聚四氟乙烯复合材料在沙尘环境下的摩擦学性能 |
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| 引用本文： | 闫艳红,王腾彬,吴子健,卢欢,贾志宁.基于正交设计的纳米蛇纹石-纳米氧化镧/聚四氟乙烯复合材料在沙尘环境下的摩擦学性能[J].复合材料学报,2020,37(7):1522-1530. |
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| 作者姓名： | 闫艳红 王腾彬 吴子健 卢欢 贾志宁 |
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| 作者单位： | 1.燕山大学 机械工程学院，秦皇岛 066004 |
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| 基金项目： | 河北省自然基金(E2016411005) |
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| 摘 要： | 以聚四氟乙烯(PTFE)为基体，采用正交实验法研究了纳米蛇纹石(nano Serpentine)、纳米氧化镧 (nano La2O3)和环境三种因素对nano Serpentine-nano La2O3/PTFE复合材料摩擦学性能的影响。采用自制沙尘模拟装置改进现有的 MMU-5G摩擦磨损试验机对nano Serpentine-nano La2O3/PTFE复合材料进行摩擦学实验。通过SEM观察试样磨损表面和转移膜形貌，分析nano Serpentine-nano La2O3/PTFE复合材料磨损机制。结果表明:环境因素对nano Serpentine-nano La2O3/PTFE复合材料的摩擦系数影响最大，干摩擦摩擦系数比沙尘环境下摩擦系数低；nano Serpentine含量对nano Serpentine-nano La2O3/PTFE复合材料的磨损率影响最大，当nano Serpentine质量分数为9wt%时，nano Serpentine-nano La2O3/PTFE复合材料的总体磨损率最低。nano Serpentine-nano La2O3/PTFE复合材料的干摩擦的磨损机制主要为黏着磨损，沙尘环境的磨损机制主要为磨粒磨损。
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| 关 键 词： | 聚四氟乙烯(PTFE) 复合材料 正交实验 沙尘环境 摩擦学性能 |
| 收稿时间： | 2019-08-27 |
Tribological properties of nano Serpentine-nano La2O3/polytetrafluoroethylene composites based on orthogonal design in sand-dust environment |
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| Affiliation: | 1.School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China2.Hebei Instrument & Meter Engineering Technology Research Center, Chengde Petroleum College, Chengde 067000, China |
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| Abstract: | The effects of nano Serpentine, nano La2O3 and environmental factors on the tribological properties of nano Serpentine-nano La2O3/polytetrafluoroethylene(PTFE) composites were investigated by orthogonal test. The self-made sand-dust environment simulation device was used to improve the existing MMU-5G friction and wear tester, and the tribological experiment was carried out using the test machine. The wear surface and transfer film morphology of the nano Serpentine-nano La2O3/PTFE composites were observed by SEM and the wear mechanism was analyzed. The results show that the friction coefficient of nano Serpentine-nano La2O3/PTFE composites is greatly influenced by the environmental factors and the friction coefficient of dry friction is lower than that in sand-dust environment. The nano Serpentine content has the greatest influence on the wear rate of nano Serpentine-nano La2O3/PTFE composites. When the nano Serpentine mass fraction is 9wt%, the wear rate of nano Serpentine-nano La2O3/PTFE composites is the lowest. The wear mechanism of dry friction is mainly adhesive wear, and the wear mechanism in sand-dust environment is mainly abrasive wear. |
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