宿州学院学报2026，Vol.41Issue(6)：11-15,5.DOI:10.3969/j.issn.1673-2006.2026.06.003
干摩擦条件下聚四氟乙烯材料的耐磨改进研究
Boosting Wear Resistance of Polytetrafluoroethylene Materials Under Dry Friction Conditions
摘要
Abstract
A series of polytetrafluoroethylene(PTFE)based composites were prepared by incorporating dolomite(Dol)and micron graphite(Gr)flakes with different mass fractions,i.e.,5％,15％and 25％,and their tribological properties when slid against bearing steel undel dry friction were examined.The results showed that the friction coef-ficient of pure PTFE was 0.15.After filling with 20 wt％Dol,its wear resistance was significantly improved.The wear rate decreased from 1.2×10-4 mm3/(N·m)of pure PTFE to 1.6×10-5 mm3/(N·m),reduced by 86.7％.On this basis,adding Gr further reduced the wear rate and friction coefficient of the composite material.Es-pecially when the filling mass fraction was 15 wt％,the wear rate decreased to 1.1×10-5 mm3/(N·m),indicating that its wear resistance was improved by approximately one order of magnitude(i.e.,the wear rate was reduced to a-bout one-tenth of that of pure PTFE).When the Gr content was 25 wt％,the friction coefficient of the tribo-pair de-creased to 0.09,representing a reduction of 40％compared with that of pure PTFE.关键词
聚四氟乙烯/改性/干摩擦/耐磨性能Key words
polytetrafluoroethylene/modification/dry friction/wear resistance分类
通用工业技术引用本文复制引用
张利刚..干摩擦条件下聚四氟乙烯材料的耐磨改进研究[J].宿州学院学报,2026,41(6):11-15,5.基金项目
安徽省高校杰出青年科研项目(2022AH020083) （2022AH020083）
宿州学院博士(后)科研启动基金项目(2022BSK004). （后）
