Abstract Low-friction composites with long-term stability based on three-dimensional, mass-producible mesoporous TiO2 nanospheres (MTNs) with a large surface area and carbon black (CB) dispersed in a poly (vinylidene fluoride) (PVDF) matrix were developed via dissolution–precipitation approach. The interaction and miscibility were enhanced by the incorporation of a small amount of CB filler. A long-term test (4 h) indicated that the incorporation of 5% MTN reduced both the friction coefficient (0.480) and the specific wear rate (0.412 × 10−4 mm3 N−1 m−1) compared with neat PVDF. The friction coefficient (0.446) was further reduced by the addition of CB (MTN_15CB with 15% MTN) owing to the increased fraction of the nonpolar α phase in the PVDF and the good adhesion properties of the composites.

中文翻译：

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由介孔 TiO2 纳米球和聚偏二氟乙烯基质中的炭黑组成的长期稳定低摩擦复合材料的溶解-沉淀方法

摘要 基于三维、可量产的大表面积介孔 TiO2 纳米球 (MTNs) 和分散在聚偏二氟乙烯 (PVDF) 基体中的炭黑 (CB)，开发了具有长期稳定性的低摩擦复合材料。通过溶解-沉淀方法。通过加入少量的 CB 填料增强了相互作用和混溶性。长期测试（4 小时）表明，与纯 PVDF 相比，5% MTN 的加入降低了摩擦系数 (0.480) 和比磨损率 (0.412 × 10−4 mm3 N−1 m−1)。由于 PVDF 中非极性 α 相的比例增加和复合材料的良好粘合性能，摩擦系数 (0.446) 通过添加 CB（MTN_15CB 与 15% MTN）进一步降低。