Adding solid DCDPS into the high-temperature system, it would be gasified by the ambient temperature and convert the preset Na₂S coating into polyphenylene sulfide sulfone lubrication films through positional polymerisation. During the 10 min ball-disk tribological test at 500°C, lubrication films would form on the disk surface initially, then attach to the friction points of the balls, producing transfer films that significantly reduce the coefficient of friction (COF) and wear, especially the wear on the steel disk. In the 30 min test, the lubrication could be re-attained with COF not exceeding 0.2 by simply supplementing DCDPS again at 10 min. This result can be inferred as the re-polymerisation between the degradation products from the earlier stage and the newly added DCDPS. Thus, the position of the lubrication films formed during the high-temperature friction could be controlled by preset coating, and the high-temperature lubrication could be extended or re-attained by replenishing the other monomer.

中文翻译：

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通过 DCDPS 在预设的 Na2S 涂层上的位置聚合，可在 500°C 下重新获得润滑膜

在高温系统中加入固体DCDPS，在环境温度下气化，转化为预设的Na ₂通过位置聚合将 S 涂覆在聚苯硫醚砜润滑膜上。在 500°C 的 10 分钟球盘摩擦学测试中，润滑膜最初会在圆盘表面形成，然后附着在球的摩擦点上，产生显着降低摩擦系数 (COF) 和磨损的转移膜，尤其是钢盘的磨损。在 30 分钟测试中，只需在 10 分钟时再次补充 DCDPS，即可在 COF 不超过 0.2 的情况下重新获得润滑。该结果可以推断为来自早期阶段的降解产物与新添加的DCDPS之间的再聚合。因此，在高温摩擦过程中形成的润滑膜的位置可以通过预设涂层来控制，