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以聚酰胺酸(PAA)为有机粘结剂,二硫化钼(MoS_2)和石墨为无机固体润滑剂,利用简单有效的旋涂工艺在铝合金表面制备了MoS_2基自润滑聚酰亚胺(PI)复合薄膜,并对复合润滑薄膜的力学、热学和摩擦学性能进行了表征。实验结果表明,复合润滑薄膜与纯PI薄膜相比,具有更好的热学和力学性能;单独加入MoS_2和石墨所制备的复合润滑膜均能有效降低PI薄膜的摩擦系数;由于MoS_2与石墨的协同作用,使得PMG复合薄膜的摩擦系数在所有润滑薄膜中最低,为0.153。
Polyamic acid (PAA) as an organic binder, molybdenum disulfide (MoS_2) and graphite as inorganic solid lubricants were prepared by simple and effective spin-coating process on the surface of aluminum alloy MoS_2 based self-lubricating polyimide ) Composite films, and the mechanical, thermal and tribological properties of the composite films were characterized. The experimental results show that the composite lubricating film has better thermal and mechanical properties than pure PI film. The composite lubricating film prepared by adding MoS_2 and graphite alone can effectively reduce the friction coefficient of the PI film. Due to the synergistic effect of MoS_2 and graphite Role, making the friction coefficient of PMG composite film lowest in all lubricating films, 0.153.