This paper investigates applicability of polysiloxane/MoS₂ lubricating coatings in low-earth orbit (LEO). Results show that wear resistance of the polysiloxane lubricating coatings is related to R/Si value and epoxy group of the epoxy-functionalized polysiloxanes resin. The prepared polysiloxane lubricating coatings exhibited better wear resistance than existing organic coating due to the synergistic effect of low surface energy polysiloxane and MoS₂. Furthermore, the polysiloxane coating achieved excellent AO resistance ascribe to the generation of SiO₂ protective layer. The thickness of SiO₂ layer was only 60 nm, which has no effect on vacuum tribological properties of the polysiloxanes lubricating coating. After AO irradiation, the polysiloxane lubricating coating maintained a low friction coefficient and excellent wear resistance under the vacuum condition.

本文研究了聚硅氧烷/MoS ₂润滑涂层在低地球轨道 (LEO) 中的适用性。结果表明，聚硅氧烷润滑涂层的耐磨性与环氧官能化聚硅氧烷树脂的R/Si值和环氧基有关。由于低表面能聚硅氧烷和MoS ₂的协同作用，制备的聚硅氧烷润滑涂层比现有的有机涂层具有更好的耐磨性。此外，由于SiO ₂保护层的产生，聚硅氧烷涂层获得了优异的抗AO性能。SiO ₂的厚度层仅 60 nm，这对聚硅氧烷润滑涂层的真空摩擦学性能没有影响。AO辐照后，聚硅氧烷润滑涂层在真空条件下保持较低的摩擦系数和优异的耐磨性。