Polyether ether ketone (PEEK), as a high-performance engineering polymer, can be a promising material for water lubricated bearings. However, some modifications are imperative when it is widely employed in engineering. In this study, a novel bisphenol-A (BPA) type sulfonated polyether ether ketone (SPEEK-BPA) polymer was synthesized, and it was compounded with 10 wt% carbon fibre (SPEEK-BPA/10 %CF) to obtain a water lubricated material with ultralow friction coefficient (COF) and excellent wear resistance. The outstanding tribological properties of SPEEK-BPA/10 %CF was attributed to the adsorption of hydrated Na cations by –SO and the reinforcement of carbon fibre. The COF of SPEEK-BPA/10 %CF can be reduced as low as 0.009 when a 3 wt% NaCl solution was used as the lubricant at a low sliding speed (0.10 m/s). At the same time, the wear rate of SPEEK-BPA/10 %CF reached to a magnitude of 10 and 10 mm/(Nm), which was much lower than commercial PEEK. Therefore, this friction-reducing and anti-wear composite has great potential to realize a water lubricated bearing with low noise and superlubricity.

中文翻译：

---

碳纤维增强双酚A型SPEEK水润滑超润滑复合材料

聚醚醚酮（PEEK）作为一种高性能工程聚合物，可以成为一种很有前景的水润滑轴承材料。然而，当它广泛应用于工程中时，一些修改是必要的。本研究合成了一种新型双酚A（BPA）型磺化聚醚醚酮（SPEEK-BPA）聚合物，并将其与10 wt%碳纤维（SPEEK-BPA/10 %CF）复合以获得水润滑的材料具有超低摩擦系数（COF）和优异的耐磨性。SPEEK-BPA/10 %CF 出色的摩擦学性能归因于 –SO 对水合 Na 阳离子的吸附以及碳纤维的增强。当使用 3 wt% NaCl 溶液作为低滑动速度（0.10 m/s）的润滑剂时，SPEEK-BPA/10 %CF 的 COF 可降低至 0.009。同时，SPEEK-BPA/10%CF的磨损率达到10和10mm/(Nm)的量级，远低于商用PEEK。因此，这种减摩抗磨复合材料具有实现低噪声、超润滑水润滑轴承的巨大潜力。