The Tribological Behavior of Polyphenylene Sulphide Filled With Microsize Fillers andits Comparison to that Filled with Nanosize Fillers

摘要

The tribological behavior of polyphenylene sulfide filled with microsize inorganicparticulate fillers was studied. The fillers investigated were CuO, TiO2, ZnO and SiC insizes varying from 40 to 120 μm. Sliding tests were performed in ambient atmosphere in apin-on-disk machine at a speed of 1.0 m/s, and nominal pressure of 0.65 MPa. Thecounterface was made of hardened 02 tool steel. The adhesion between polymer compositetransfer film and metal counterface was measured in terms of the peel strength. The wearrate of PPS decreased when filled with TiO2 and CuO but increased with ZnO and SiCfillers. The maximum reduction in wear was obtained with 30 vol.% CuO and also with 30vol.% TiO2. There was a strong correlation between transfer film-counterface bondstrength and wear resistance. The comparison of the tribological behaviors of thecomposites with nano and microsize fillers revealed many similarities. These included theeffectiveness of the filler composition for wear reduction, transfer film topography and itsadhesion with the counterface. The most significant difference was in the filler proportionneeded to provide maximum reduction in wear.