混合石墨和二硫化钼填料增强聚四氟乙烯/诺梅克斯织物/环氧树脂多层复合材料的水下摩擦学性能

Enhancement of Underwater Tribological Properties of Hybrid PTFE/Nomex Fabric/Epoxy Resin Multilayer Composites by Mixed Graphite and MoS Fillers.

作者信息

Liu Ying, Gao Gengyuan, Jiang Dan, Yin Zhongwei

机构信息

School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.

出版信息

ACS Omega. 2022 Jul 27;7(31):27609-27616. doi: 10.1021/acsomega.2c03231. eCollection 2022 Aug 9.

DOI:10.1021/acsomega.2c03231

PMID:35967041

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9366979/

Abstract

This work studied the effect of mixed graphite and MoS fillers on tribological properties of hybrid polytetrafluoroethylene (PTFE)/Nomex fabric/epoxy multilayer composites under water lubrication. A ring-on-block tribometer was used to perform the tribological test under dry sliding and water lubrication conditions. The worn surface was analyzed by scanning electron microscopy and optical microscopy. The results showed mixed fillers with 2.5 wt % graphite and 5 wt % MoS had the best underwater tribological properties with the lowest friction coefficient (COF) of 0.067 and the lowest wear amount of 1.7 mg. Mixed fillers optimize epoxy resin properties, thereby increasing shore hardness, reducing water absorption, and improving wear resistance. This study also explained the reasons of the wear amount was higher in water than in dry sliding.

摘要

本研究探讨了混合石墨和二硫化钼（MoS）填料对水润滑条件下混杂聚四氟乙烯（PTFE）/Nomex织物/环氧树脂多层复合材料摩擦学性能的影响。采用环-块摩擦磨损试验机在干滑动和水润滑条件下进行摩擦学试验。通过扫描电子显微镜和光学显微镜对磨损表面进行分析。结果表明，含有2.5 wt%石墨和5 wt% MoS的混合填料具有最佳的水下摩擦学性能，最低摩擦系数（COF）为0.067，最低磨损量为1.7 mg。混合填料优化了环氧树脂性能，从而提高了肖氏硬度，降低了吸水率，并提高了耐磨性。本研究还解释了水润滑条件下磨损量高于干滑动的原因。