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Measurements of the friction coefficient of oriented polytetrafluoroethylene (PTFE) have been made and the results indicate that the friction coefficient of drawn PTFE is dependent on the oriented direction. The worn surfaces were observed using an atomic force microscopy (AFM). The crystallinity of the transfer film was determined using differential scanning calorimeter (DSC). Friction orientation...
The nano-attapulgite powder was treated by heating at 100, 200, 300, 400, 500, 600, 700 and 800°C for 2h in a muffle furnace. PTFE composites were prepared by compression molding PTFE and thermally treated nano-attapulgite. The friction and wear tests were performed on a block-on-ring wear tester. Scanning Electron Microscopy (SEM), Energy-Dispersive X-ray Spectrometer (EDS) and Differential Scanning...
The effect of compatibilizer HDPE-g-MAH of different contents on the transfer and tribological behaviors of PA46/HDPE polyblends was investigated, using a ring-on-block wear tester. All the polyblends showed friction as low as HDPE of 0.20. The wear of the polyblends was reduced when the compatibilizer ranged from 1 to 5 wt.%, showing a minimum value as 1/7 of that of PA46 when the concentration of...
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