Dry sliding wear behaviour of PTFE filled with glass and bronze particles

Abstract

The wear behaviour of polytetrafluroethylene (PTFE) filled with 25% glass and 40% bronze particles was studied on a pin on disc test rig. Solid lubricant composite materials were prepared by compression moulding technique. The wear parameters considered for the study were applied load, sliding speed and sliding distance. The experimental results indicate that the weight loss increases with increasing load, sliding speed and sliding distance, as expected. Sliding distance has more effect on weight loss followed by applied load. The 40% bronzezPTFE composite exhibits better wear resistance compared to other types. The dominant interactive wear mechanisms during sliding of PTFE and its composites are discussed in this paper.

Study: wear and superhydrophobic behaviour of PTFE-ceria composite

“…However, virgin PTFE showed relatively lesser ploughing marks as compared to PTFE-ceria composite. This points towards dominance of adhesive wear, in case of virgin PTFE; as reported in the literature [44].…”

“…The sample with C5 composition (20% ceria) showed a least specific wear rate of 17.8 mm 3 /Nm × 10 -6 . Microfillers like carbon, graphite, glass fibers, alumina, ZnO, bronze and PEEK have shown minimum specific wear rate of 5-100 mm 3 /Nm × 10 -6 [36,[41][42][43][44]46]. However nano fillers have shown specific wear rate of .1-8 mm 3 / Nm × 10 -6 [35,36,45].…”

“…Researchers [35,36,[41][42][43][44][45] have discussed wear mechanism of virgin PTFE and PTFE composites. They found a thick loose transfer film formation, in the case of virgin PTFE and thin stable transfer film in the case of PTFE composites.…”

“…However, lack of wear resistance is a concern. Researchers have tried to increase the wear resistance of PTFE by adding different fillers [41][42][43][44]. Moreover, nanofillers have also shown better wear resistance [35,36,45].…”

Investigation of Mechanical and Dry Sliding Wear Behaviours of AlB2/PE Polymer Matrix Composites

“…The used reinforcement and additive materials are glass bre [5,6], CaCO 3 , [7,8] kaolin, [9,10], talc [11], wollastonite [3], and mica [12,13] llers and MoS 2 , graphite, carbon, wax, polytetrauoroethylene (PTFE), and dry lubricants [14,15]. Dry lubricants are materials which despite being in the solid phase, are able to reduce friction between two counterparts sliding against each other without the need for a liquid medium [16].…”