Novel polyimide nanocomposites with excellent mechanical and tribological properties were achieved using amine functionalized multi-walled carbon nanotubes (MWCNT-NH₂). MWCNT-NH₂ was successfully obtained through Friedel-Crafts acylation and nitroreduction. PI nanocomposites with different contents of MWCNT-NH₂ were prepared via in-situ polymerization. In contrast with the properties of pure PI or PI/MWCNT blends, the tribological properties, mechanical properties, and thermal performance of PI/MWCNT-NH₂ nanocomposites were evidently improved due to the homogeneous dispersion of MWCNT-NH₂ in PI matrix as well as the strong interfacial covalent bonds between MWCNT-NH₂ and the PI matrix. Notably, it was demonstrated that the PI/MWCNT-NH₂ nanocomposite adding with 0.7 wt% MWCNT-NH₂ exhibited the best tribological properties in consideration of the friction coefficient (0.310) and wear rate (2.234 × 10⁻⁴ mm³/Nm) under dry sliding condition. Furthermore, the resulting PI/MWCNT-NH₂ nanocomposites possessed the combined excellent tribological and mechanical properties, evidencing their potential applications in the field of the friction materials and other high-performance areas.

使用胺官能化的多壁碳纳米管（MWCNT-NH ₂），获得了具有优异的机械和摩擦学性能的新型聚酰亚胺纳米复合材料。通过Friedel-Crafts酰化和硝基还原成功获得了MWCNT-NH ₂。通过原位聚合制备了MWCNT-NH ₂含量不同的PI纳米复合材料。与纯PI或PI / MWCNT共混物的性能相比，由于MWCNT-NH ₂在PI基体中的均匀分散，PI / MWCNT-NH ₂纳米复合材料的摩擦学性能，力学性能和热性能也得到了明显改善。作为MWCNT-NH ₂之间的强界面共价键和PI矩阵。值得注意的是，考虑到摩擦系数（0.310）和磨损率（2.234×10 ^-4 mm ³ / Nm ），表明添加0.7 wt％MWCNT-NH ₂的PI / MWCNT-NH ₂纳米复合材料表现出最佳的摩擦学性能。）在干滑条件下。此外，所得的PI / MWCNT-NH ₂纳米复合材料具有优异的摩擦学和机械性能，证明了它们在摩擦材料和其他高性能领域的潜在应用。