Repercussion of manufacturing techniques on mechanical and wear peculiarity of zno particulate‐filled polyester composites

Abstract

This article presents the comparison of mechanical and dry sliding wear peculiarity of zinc oxide (ZnO)-filled polyester composites, fabricated by two different techniques. These two techniques are simple mechanical stirring and vertical centrifugal casting. ZnO filled polyester based homogeneous composites are fabricated by simple mechanical stirring technique whereas composites fabricated by vertical centrifugal casting technique are functionally graded materials (FGMs). Dry sliding wear tests are performed over a range of sliding velocity (1.57-3.66 m/s), normal load (10-30 N), filler content (0-20 wt%), and sliding distance (1000-3000 m) using a pin-on-disc apparatus. This study establishes that the FGMs exhibit superior mechanical properties (except tensile strength) and wear resistance as compared with homogeneous composites. Among all the fabricated composites, FGMs filled with 20 wt% ZnO filler has maximum hardness and flexural strength i.e. 70 HRL and 39 MPa, respectively. Compressive and impact strength is maximum for 10 wt% ZnO filled FGMs with 36 MPa and 1.3 J, respectively. The tensile strength of homogeneous composites is 21.7% higher as compared with FGMs for 10 wt% of ZnO filler loading. FGM filled with 20 wt% of ZnO filler has minimum specific wear rate of 0.33 3 10 25 mm 3

Combined effects of interface modification and nano‐reinforcement via nano‐enhanced interphase in hybrid‐fabric composites for tribological applications

“…The transfer‐film of Hybrid‐fabric–ZnO NWs composites showed a nearly identical morphology to that of hybrid‐fabric–plasma and hybrid‐fabric–ZnO NPs composites. Nevertheless, EDS elemental analysis showed that the transfer‐film of Hybrid‐fabric–ZnO NWs composites contained high fractions of ZnO, which manifested that the ZnO NWs, released during sliding process, participated in the formation of a robust transfer film with high load carrying capability . Based on above results, the relevant mechanisms about how ZnO‐enhanced interphase governs the superior tribological properties are proposed, as shown in Fig.…”

Mechanical and thermo-mechanical peculiarity of functionally graded materials-based glass fiber-filled polybutylene terephthalate composites

“…They found that the FGMs performed better as compared to the homogeneous composites. Mechanical and wear peculiarity of polymer-based FGMs filled with filler and fiber, respectively, is also investigated by Singh et al 28,38,39…”

Development and investigation on transmission efficiency of functionally graded material-based polybutylene terephthalate spur gears

“…Thermosetting polymer matrix-based FGM has been fabricated by the researchers using centrifugal casting technique. 35–39 However, to the best of author’s knowledge, FGM-based thermoplastic (PBT) gear has not been fabricated so far. The focus of this study is to develop FGM-based glass fiber reinforced PBT gears and compare the transmission efficiency of FGM PBT gears with the unfilled and homogeneous PBT gears.…”