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对自润滑聚合物复合材料在316℃(600°F)下于空气中与AISI M-5C钢相对滑动时的摩擦学特性进行了测定。所有的复合材料均含有4种组分——聚酰亚胺树脂基体,增强用三维正交法织成的石墨纤维编织物、无机固体润滑剂填料和磷酸氢二铵[(NH_4)_2HP0_4]粘结剂。结果表明,被评价的15种配方中的8种都具有低摩擦系数、低磨损和好的转移膜。评价了各种复合材料中组分的改变对摩擦学性能的影响,并且发现纤维类型的影响最大, 为了实现气体透平发动机高速推力轴承的固体润滑,选定了一种机械和摩擦学综合特性最好的复合材料制作轴承保持器。
The tribological properties of self-lubricating polymer composites when they were slided relative to AISI M-5C steel in air at 316 ° C (600 ° F) were determined. All the composites contain four kinds of components - polyimide resin matrix, reinforced by three-dimensional orthogonal woven graphite fiber braid, inorganic solid lubricant filler and diammonium phosphate [(NH_4) _2HP0_4] stick Binder. The results showed that 8 of the 15 formulations evaluated all had low coefficient of friction, low wear and good transfer film. The influence of the change of the components in the various composites on the tribological properties was evaluated and the influence of the fiber type was found to be the most significant. In order to achieve the solid lubrication of the gas turbine engine high-speed thrust bearing, a mechanical and tribological properties The best composite material bearing retainer.