硫化界面修饰二硫化钼增强绿色润滑剂的摩擦学性能
Tribological Performance of Green Lubricant Enhanced by Sulfidation IF-MoS₂.
作者信息
Shi Shih-Chen
机构信息
Department of Mechanical Engineering, National Cheng Kung University (NCKU), No. 1 University Road, Tainan 70101, Taiwan.
出版信息
Materials (Basel). 2016 Oct 21;9(10):856. doi: 10.3390/ma9100856.
Biopolymers reinforced with nanoparticle (NP) additives are widely used in tribological applications. In this study, the effect of NP additives on the tribological properties of a green lubricant hydroxypropyl methylcellulose (HPMC) composite was investigated. The IF-MoS₂ NPs were prepared using the newly developed gas phase sulfidation method to form a multilayered, polyhedral structure. The number of layers and crystallinity of IF-MoS₂ increased with sulfidation time and temperature. The dispersity of NPs in the HPMC was investigated using Raman and EDS mapping and showed great uniformity. The use of NPs with HPMC enhanced the tribological performance of the composites as expected. The analysis of the worn surface shows that the friction behavior of the HPMC composite with added NPs is very sensitive to the NP structure. The wear mechanisms vary with NP structure and depend on their lubricating behaviors.
用纳米颗粒（NP）添加剂增强的生物聚合物广泛应用于摩擦学领域。在本研究中，研究了NP添加剂对绿色润滑剂羟丙基甲基纤维素（HPMC）复合材料摩擦学性能的影响。采用新开发的气相硫化法制备了IF-MoS₂纳米颗粒，形成了多层多面体结构。IF-MoS₂的层数和结晶度随硫化时间和温度的增加而增加。利用拉曼光谱和能谱映射研究了纳米颗粒在HPMC中的分散性，结果表明其具有很好的均匀性。正如预期的那样，纳米颗粒与HPMC的结合增强了复合材料的摩擦学性能。磨损表面分析表明，添加纳米颗粒的HPMC复合材料的摩擦行为对纳米颗粒结构非常敏感。磨损机制随纳米颗粒结构的变化而变化，并取决于它们的润滑行为。
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