2026-10-12T20:00:34Z https://www.scidb.cn/oai

10.57760/sciencedb.39898 2026-06-22T15:43:20Z

2026-06-22 Impact of pv Values on the Friction and Wear Performance of Blended Fiber Composite Materials doi:10.57760/sciencedb.39898 en pv value as a key factor affecting the wear resistance of PTFE blended fibers, this paper selects two kinds of blended fiber composites as the research object, and based on its working conditions, with pv value as a variable, in the HLR-7000 reciprocating friction and wear tester on GF/PTFE and Kevlar/PTFE blended fiber composites friction and wear test, to explore their different pv value under the to investigate their friction and wear performance and wear mechanism changes at different pv values. The results demonstrate that at a pv value of 2.4 MPa·m/s, the friction coefficient of the GF/PTFE blended fiber composite material is lower than that of the Kevlar/PTFE blended fiber composite material. Furthermore, the wear mechanisms differ between the two materials. The GF/PTFE blended fiber composite material exhibits a lower wear volume, with wear predominantly characterized by abrasive wear and accompanied by minor fatigue wear. Conversely, the Kevlar/PTFE blended fiber composite material shows a higher wear volume, with wear primarily driven by fatigue wear. At a pv value of 4.8 MPa·m/s, both materials are predominantly subject to abrasive wear; however, the GF/PTFE blended fiber composite material experiences more severe surface damage and a higher wear volume. Microscopic analysis, conducted using an optical microscope, scanning electron microscope (SEM), and energy-dispersive spectrometer (EDS), of the initial and worn surface morphology, debris, transfer film, and elemental distribution, revealed that at a pv value of 4.8 MPa·m/s, there is a significant increase in the content of fluorine (F) elements within the wear track area, which is more uniformly distributed, contributing to a more continuous formation of the transfer film on the rubbing surface. Under conditions of a pv value of 2.4 MPa·m/s, the performance of the GF/PTFE blended fiber composite material is superior to that of the Kevlar/PTFE blended fiber composite material. In contrast, under conditions of a pv value of 4.8 MPa·m/s, the Kevlar/PTFE blended fiber composite material exhibits superior wear resistance.  blended fiber composite material; pv value; transfer film; friction and wear; damage mechanism Zhao Ningbo Liu Jian Chen Kun's Ballad Du Sanming Zhang Yongzhen PUBLIC https://creativecommons.org/licenses/by-nc-nd/4.0/ dataset Science Data Bank