PAO40@SiO₂ microcapsules (PSMS) were prepared by adsorbing Poly α-olefin lubricating oil 40# (PAO40) with hollowed SiO₂ particles. The tribological properties of polytetrafluoroethylene (PTFE)/aramid fabric composites at different microcapsules contents were evaluated by the ring-block tests. The friction coefficient and wear rate of PTFE/aramid fabric composites containing 6 wt% PSMS (Fabric-6% PSMS) were reduced by 42.9% and 31.5% respectively, as opposed to those of neat PTFE/aramid fabric composites (Fabric-0%). The service life of Fabric-6% PSMS under radial pressure of 240 MPa was increased by 5.3 times as compared with that of Fabric-0%. The wear mechanisms of Fabric-6% PSMS revealed that SiO₂ particles promoted the formation of metal-F bonds on the shaft surfaces and further improved the abrasive resistance of transfer films.

PAO40@SiO ₂微胶囊（PSMS）是通过用中空的SiO ₂颗粒吸附聚α-烯烃润滑油40#（PAO40）制备的。聚四氟乙烯（PTFE）/芳纶织物复合材料在不同微胶囊含量下的摩擦学性能通过环块试验进行评估。与纯 PTFE/芳纶织物复合材料 (Fabric-0% PSMS) 相比，含有 6 wt% PSMS (Fabric-6% PSMS) 的 PTFE/芳纶织物复合材料的摩擦系数和磨损率分别降低了 42.9% 和 31.5%。 ）。Fabric-6% PSMS在240 MPa径向压力下的使用寿命比Fabric-0%提高了5.3倍。Fabric-6% PSMS 的磨损机制表明 SiO ₂ 颗粒促进了轴表面金属-F键的形成，进一步提高了转移膜的耐磨性。