Impregnation approach for poly(vinylidene fluoride)/tin oxide nanotube composites with high tribological performance

• 来源期刊: 材料科学技术（英文版）
• 年，卷（期）: 2020,（2）
• 页码范围: 19-25
• 页数: 7页
• 语种: 英文

摘要

We report a composite material with the high tribological performance,which consists of onedimensional SnO2 nanotubes (ST) and a high molecular weight poly(vinylidene fluoride) (PVDF) matrix in terms of nano-impregnation.Dissolution of PVDF in N,N-dimethylformamide (DMF) resulted in a facile penetration of PVDF into the inner hollow voids of ST,leading to the close contact.Interaction between PVDF and ST results in a beneficial effect on the chain arrangement of PVDF,providing an cα-phase with better tribological property.Upon ST incorporation,the friction coefficient decreased by 85.0％to 0.408,and the specific wear rate decreased by 69.1％ to 0.412,demonstrating the pivotal role of ST as a self-lubricating material due to a large interactive area and PVDF chain rearrangement.