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用Timken试验机考察了热压成形的PTFE填充尼龙6在干摩擦状态下的摩擦磨损性能及PTFE填充量、滑动速度和负荷对摩擦磨损的影响,并用X-光电子能谱仪(XPS)和电子探针(EPMA)研究了金属偶件摩擦表面转移膜的组成与形貌。结果表明,在给定的试验条件下,填充PTFE能够有效地改善尼龙6的摩擦磨损性能,PTFE的填充量在8～20％(vol)之间时的效果较好,8％PTFE填充尼龙6的PV值可比纯尼龙6的高1倍;填充PTFE的效用主要取决于转移膜的特性和PTFE在转移膜中的富集量。
The tribological properties of hot-formed PTFE-filled nylon 6 under dry tribological conditions and the effects of PTFE loading, sliding speed and load on friction and wear were investigated by Timken test machine. X-ray photoelectron spectroscopy (XPS) and electron The probe (EPMA) was used to study the composition and morphology of the frictional surface transfer film on a metal coupling. The results show that under the given experimental conditions, PTFE can effectively improve the friction and wear properties of nylon 6, the effect is better when the filling amount of PTFE is between 8 and 20% (vol), and that of the nylon 6 PV value can be 1 times higher than that of pure nylon 6; the effect of PTFE filling mainly depends on the characteristics of the transfer film and the enrichment amount of PTFE in the transfer film.