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首页> 外文期刊>Journal of Applied Polymer Science >Tribological properties of porous PPS/PTFE composite filled with mesopore titanium oxide whisker
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Tribological properties of porous PPS/PTFE composite filled with mesopore titanium oxide whisker

机译：介孔氧化钛晶须填充的多孔PPS / PTFE复合材料的摩擦学性能

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摘要

Nano-micro hierarchical porous polyphenylene sulfide/ polytetrafluoroethylene (PPS/PTFE) composites were prepared by mold-leaching and vacuum melting process under high temperature condition. The tribological behaviors of porous PPS/PTFE composites and the synergism as a result of incorporation of both micro-porogen (NaCl) and mesoporous TiO_2 whiskers were investigated. The effects of mesoporous TiO_2 whiskers and nonperforated TiO_2 whiskers on the friction and wear properties of PPS/PTFE composites were comparatively studied, respectively. Results indicated that the wear rate of porous PPS/PTFE composites with 30 wt % NaCl and 7 wt % mesoporous TiO_2 whiskers obtained the lowest values under the load of 100 N. Compared with pure PPS, the wear resistance of nano-micro porous PPS/PTFE composite was enhanced by 6.45 × 10~3 times, showing outstanding wear resistance. During sliding condition, grease could be squeezed through the nano-micro pores under the coupling effect of load and friction heat, and formed a lubricanting layer on friction surface, providing self-lubricating effect and high wear resistance.
机译：在高温条件下，通过模具浸出和真空熔融工艺制备了纳米微级多孔聚苯硫醚/聚四氟乙烯（PPS / PTFE）复合材料。研究了多孔PPS / PTFE复合材料的摩擦学行为以及由于微孔原（NaCl）和中孔TiO_2晶须的结合而产生的协同作用。分别比较了介孔TiO_2晶须和无孔TiO_2晶须对PPS / PTFE复合材料摩擦磨损性能的影响。结果表明，在100 N的载荷下，含有30 wt％NaCl和7 wt％介孔TiO_2晶须的多孔PPS / PTFE复合材料的磨损率最低。与纯PPS相比，纳米微孔PPS / PTFE复合材料增强了6.45×10〜3倍，表现出出色的耐磨性。在滑动条件下，润滑脂在载荷和摩擦热的耦合作用下可以通过纳米微孔挤压，在摩擦表面形成润滑层，具有自润滑作用和高耐磨性。

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