聚酰亚胺基固体润滑复合材料研究进展

Polyimide (PI) matrix is a ubiquitous solid lubricating organic polymer material in shafts, gears, brakes and microelectronics due to superior thermal resistance, mechanical properties, chemical stability and low dielectric constants. However, the high friction coefficient and poor wear resistance of pristine PI severely limit further application and reduce service life. Firstly, this paper summarizes the latest research progress of tribological performance of PI by introducing zero-dimensional (0D), one-dimensional (1D) and two-dimensional (2D) lubricating phase materials. The anti-friction and anti-wear mechanism on PI by adding different single-dimensional lubricating phase materials are discussed in detail. Secondly, the lubricating effect of multidimensional (0D-1D, 0D-2D, 1D-2D) hybrid lubricating materials on PI matrix is analyzed. Multidimensional hybrid lubricating materials show the optimal tribological properties for PI matrix compared to single-dimensional materials. Thirdly, the influence of different dimensional lubricating phase materials on the mechanical properties of PI-based composites is further reviewed. Finally, it is pointed out that the future research trend of PI-based solid lubricating composites should be focused on the friction behavior under different working conditions in addition to the development of new lubricating materials, while revealing the mechanism of lubrication between PI and lubricating phase through simulation studies.